SC-04-08 Richard Cabot posted an update in the group SC-04-08 3 weeks ago No folders found. Please create and select folder. Documents Folder Title Following special characters are not supported: \ / ? % * : | " < > Privacy Public All Members My Connections Only Me Cancel Create 000417.html 8 KB HTML - Click to view Options Copy Download Link <TITLE> [SC-04-08] InfoComm Spectral Balance Standard </TITLE> pre { white-space: pre-wrap; /* css-2.1, curent FF, Opera, Safari */ } <H1>[SC-04-08] InfoComm Spectral Balance Standard</H1> <B>Peter Mapp</B> <A HREF="mailto:sc-04-08%40standards.aes.org?Subject=Re%3A%20%5BSC-04-08%5D%20InfoComm%20Spectral%20Balance%20Standard&In-Reply-To=%3C74bd72fa195040088861fbab7dcee204%40CP1-L1-MB-2003.CloudPlatform1.com%3E" TITLE="[SC-04-08] InfoComm Spectral Balance Standard">peter at petermapp.com </A><BR> <I>Thu Apr 27 08:15:50 EDT 2017</I> <P><UL> <LI>Previous message: <A HREF="000416.html">[SC-04-08] InfoComm Spectral Balance Standard </A></li> <LI>Next message: <A HREF="000419.html">[SC-04-08] InfoComm Spectral Balance Standard </A></li> <LI> <B>Messages sorted by:</B> <a href="date.html#417">[ date ]</a> <a href="thread.html#417">[ thread ]</a> <a href="subject.html#417">[ subject ]</a> <a href="author.html#417">[ author ]</a> </LI> </UL> <HR> <!--beginarticle--> <PRE>Wooa ! Let's not let this get out of hand. There are some very good bits in the standard and there are some poor bits and some plain daft bits and then there is the construction and inconsistencies within the document itself which should have been dealt with before it was ever let out for comment. It may be John that the IEC and ISO standards that we spend much of our time dealing directly with are of a higher standard than ANSI etc. Either way, it's good to know that any input will be 'appropriately' considered. If a standard is to work it has to be respected by the industry and fulfil a useful and needed function Regards Peter -----Original Message----- From: SC-04-08 [mailto:<A HREF="https://secure.aes.org/mailman/listinfo/sc-04-08">sc-04-08-bounces at standards.aes.org</A>] On Behalf Of John Woodgate via SC-04-08 Sent: 27 April 2017 13:00 To: 'Charlie Hughes'; 'Working group on Measurement and equalization of sound systems in rooms' Subject: Re: [SC-04-08] InfoComm Spectral Balance Standard That's all very well, but there is obviously a root problem that suitably qualified and experienced people were not involved in the preparation at an early stage. That's not an assumption; if they had been, there would have been no ground for serious criticism. It's not the only case; I'm reviewing an ANSI standard that appears to have been written by people who never wrote one before. One 'feature' is the citing of a street address no less than 13 times. With best wishes DESIGN IT IN! OOO - Own Opinions Only www.jmwa.demon.co.uk J M Woodgate and Associates Rayleigh England Sylvae in aeternum manent. -----Original Message----- From: SC-04-08 [mailto:<A HREF="https://secure.aes.org/mailman/listinfo/sc-04-08">sc-04-08-bounces at standards.aes.org</A>] On Behalf Of Charlie Hughes via SC-04-08 Sent: Thursday, 27 April 2017 12:52 To: Peter Mapp <<A HREF="https://secure.aes.org/mailman/listinfo/sc-04-08">peter at petermapp.com</A>>; Working group on Measurement and equalization of sound systems in rooms <<A HREF="https://secure.aes.org/mailman/listinfo/sc-04-08">sc-04-08 at standards.aes.org</A>>; david murphy <<A HREF="https://secure.aes.org/mailman/listinfo/sc-04-08">dmurphy at krix.com.au</A>>; Richard Cabot <<A HREF="https://secure.aes.org/mailman/listinfo/sc-04-08">standards at aes.org</A>>; John Murray <<A HREF="https://secure.aes.org/mailman/listinfo/sc-04-08">john at OptimumSS.com</A>> Subject: Re: [SC-04-08] InfoComm Spectral Balance Standard Hi Peter, My understanding is that all comments will be reviewed and efforts taken to address them appropriately. Please do take time to review the document and offer constructive criticism so that improvements can be made. Best regards, Charlie Hughes Excelsior Audio Gastonia, NC +1 704.675.5435 (tel) +1 704.678.6570 (mobile) www.excelsior-audio.com From: Peter Mapp [mailto:<A HREF="https://secure.aes.org/mailman/listinfo/sc-04-08">peter at petermapp.com</A>] Sent: Thursday, April 27, 2017 7:35 AM To: Charlie Hughes; Working group on Measurement and equalization of sound systems in rooms; david murphy; Richard Cabot; John Murray Subject: RE: [SC-04-08] InfoComm Spectral Balance Standard Charlie I think you need to clarify your statement "possibly making changes" . The document is riddled with inconsistencies and inaccuracies. If there is only a 'possibility' of changes being made, then it is total waste of time for this group to review it. It is one of the worst draft standard documents that I have read in a while. I am not sure whether the AES will be making a formal submission as per the SMPTE document or if it will be down to individuals to comment. Regards Peter VC SC04-08 -----Original Message----- From: SC-04-08 [mailto:<A HREF="https://secure.aes.org/mailman/listinfo/sc-04-08">sc-04-08-bounces at standards.aes.org</A>] On Behalf Of Charlie Hughes via SC-04-08 Sent: 27 April 2017 12:07 To: david murphy; Working group on Measurement and equalization of sound systems in rooms; Richard Cabot; John Murray Subject: Re: [SC-04-08] InfoComm Spectral Balance Standard Hi Everyone, Please keep in mind that this is a preliminary draft of a new standard from InfoComm. We will be reviewing the comments we receive and possibly making changes based on the feedback received. Best regards, Charlie Hughes Excelsior Audio Gastonia, NC +1 704.675.5435 (tel) +1 704.678.6570 (mobile) www.excelsior-audio.com<<A HREF="http://www.excelsior-audio.com">http://www.excelsior-audio.com</A>> -----Original Message----- And I for one would really like to read the InfoComm Standard. _______________________________________________ SC-04-08 mailing list <A HREF="https://secure.aes.org/mailman/listinfo/sc-04-08">SC-04-08 at standards.aes.org</A><mailto:<A HREF="https://secure.aes.org/mailman/listinfo/sc-04-08">SC-04-08 at standards.aes.org</A>> <<A HREF="http://standards.aes.org/sc.cfm?ID=91">http://standards.aes.org/sc.cfm?ID=91</A>> _______________________________________________ SC-04-08 mailing list <A HREF="https://secure.aes.org/mailman/listinfo/sc-04-08">SC-04-08 at standards.aes.org</A> <<A HREF="http://standards.aes.org/sc.cfm?ID=91">http://standards.aes.org/sc.cfm?ID=91</A>> _______________________________________________ SC-04-08 mailing list <A HREF="https://secure.aes.org/mailman/listinfo/sc-04-08">SC-04-08 at standards.aes.org</A> <<A HREF="http://standards.aes.org/sc.cfm?ID=91">http://standards.aes.org/sc.cfm?ID=91</A>> </PRE> <!--endarticle--> <HR> <P><UL> <!--threads--> <LI>Previous message: <A HREF="000416.html">[SC-04-08] InfoComm Spectral Balance Standard </A></li> <LI>Next message: <A HREF="000419.html">[SC-04-08] InfoComm Spectral Balance Standard </A></li> <LI> <B>Messages sorted by:</B> <a href="date.html#417">[ date ]</a> <a href="thread.html#417">[ thread ]</a> <a href="subject.html#417">[ subject ]</a> <a href="author.html#417">[ author ]</a> </LI> </UL> <hr> <a href="https://secure.aes.org/mailman/listinfo/sc-04-08">More information about the SC-04-08 mailing list</a><br> Expand 000416.html 7 KB HTML - Click to view Options Copy Download Link <TITLE> [SC-04-08] InfoComm Spectral Balance Standard </TITLE> pre { white-space: pre-wrap; /* css-2.1, curent FF, Opera, Safari */ } <H1>[SC-04-08] InfoComm Spectral Balance Standard</H1> <B>John Woodgate</B> <A HREF="mailto:sc-04-08%40standards.aes.org?Subject=Re%3A%20%5BSC-04-08%5D%20InfoComm%20Spectral%20Balance%20Standard&In-Reply-To=%3C00d601d2bf4d%24c183c0f0%24448b42d0%24%40btinternet.com%3E" TITLE="[SC-04-08] InfoComm Spectral Balance Standard">jmw1937 at btinternet.com </A><BR> <I>Thu Apr 27 07:59:42 EDT 2017</I> <P><UL> <LI>Previous message: <A HREF="000415.html">[SC-04-08] InfoComm Spectral Balance Standard </A></li> <LI>Next message: <A HREF="000417.html">[SC-04-08] InfoComm Spectral Balance Standard </A></li> <LI> <B>Messages sorted by:</B> <a href="date.html#416">[ date ]</a> <a href="thread.html#416">[ thread ]</a> <a href="subject.html#416">[ subject ]</a> <a href="author.html#416">[ author ]</a> </LI> </UL> <HR> <!--beginarticle--> <PRE>That's all very well, but there is obviously a root problem that suitably qualified and experienced people were not involved in the preparation at an early stage. That's not an assumption; if they had been, there would have been no ground for serious criticism. It's not the only case; I'm reviewing an ANSI standard that appears to have been written by people who never wrote one before. One 'feature' is the citing of a street address no less than 13 times. With best wishes DESIGN IT IN! OOO - Own Opinions Only www.jmwa.demon.co.uk J M Woodgate and Associates Rayleigh England Sylvae in aeternum manent. -----Original Message----- From: SC-04-08 [mailto:<A HREF="https://secure.aes.org/mailman/listinfo/sc-04-08">sc-04-08-bounces at standards.aes.org</A>] On Behalf Of Charlie Hughes via SC-04-08 Sent: Thursday, 27 April 2017 12:52 To: Peter Mapp <<A HREF="https://secure.aes.org/mailman/listinfo/sc-04-08">peter at petermapp.com</A>>; Working group on Measurement and equalization of sound systems in rooms <<A HREF="https://secure.aes.org/mailman/listinfo/sc-04-08">sc-04-08 at standards.aes.org</A>>; david murphy <<A HREF="https://secure.aes.org/mailman/listinfo/sc-04-08">dmurphy at krix.com.au</A>>; Richard Cabot <<A HREF="https://secure.aes.org/mailman/listinfo/sc-04-08">standards at aes.org</A>>; John Murray <<A HREF="https://secure.aes.org/mailman/listinfo/sc-04-08">john at OptimumSS.com</A>> Subject: Re: [SC-04-08] InfoComm Spectral Balance Standard Hi Peter, My understanding is that all comments will be reviewed and efforts taken to address them appropriately. Please do take time to review the document and offer constructive criticism so that improvements can be made. Best regards, Charlie Hughes Excelsior Audio Gastonia, NC +1 704.675.5435 (tel) +1 704.678.6570 (mobile) www.excelsior-audio.com From: Peter Mapp [mailto:<A HREF="https://secure.aes.org/mailman/listinfo/sc-04-08">peter at petermapp.com</A>] Sent: Thursday, April 27, 2017 7:35 AM To: Charlie Hughes; Working group on Measurement and equalization of sound systems in rooms; david murphy; Richard Cabot; John Murray Subject: RE: [SC-04-08] InfoComm Spectral Balance Standard Charlie I think you need to clarify your statement "possibly making changes" . The document is riddled with inconsistencies and inaccuracies. If there is only a 'possibility' of changes being made, then it is total waste of time for this group to review it. It is one of the worst draft standard documents that I have read in a while. I am not sure whether the AES will be making a formal submission as per the SMPTE document or if it will be down to individuals to comment. Regards Peter VC SC04-08 -----Original Message----- From: SC-04-08 [mailto:<A HREF="https://secure.aes.org/mailman/listinfo/sc-04-08">sc-04-08-bounces at standards.aes.org</A>] On Behalf Of Charlie Hughes via SC-04-08 Sent: 27 April 2017 12:07 To: david murphy; Working group on Measurement and equalization of sound systems in rooms; Richard Cabot; John Murray Subject: Re: [SC-04-08] InfoComm Spectral Balance Standard Hi Everyone, Please keep in mind that this is a preliminary draft of a new standard from InfoComm. We will be reviewing the comments we receive and possibly making changes based on the feedback received. Best regards, Charlie Hughes Excelsior Audio Gastonia, NC +1 704.675.5435 (tel) +1 704.678.6570 (mobile) www.excelsior-audio.com<<A HREF="http://www.excelsior-audio.com">http://www.excelsior-audio.com</A>> -----Original Message----- And I for one would really like to read the InfoComm Standard. _______________________________________________ SC-04-08 mailing list <A HREF="https://secure.aes.org/mailman/listinfo/sc-04-08">SC-04-08 at standards.aes.org</A><mailto:<A HREF="https://secure.aes.org/mailman/listinfo/sc-04-08">SC-04-08 at standards.aes.org</A>> <<A HREF="http://standards.aes.org/sc.cfm?ID=91">http://standards.aes.org/sc.cfm?ID=91</A>> _______________________________________________ SC-04-08 mailing list <A HREF="https://secure.aes.org/mailman/listinfo/sc-04-08">SC-04-08 at standards.aes.org</A> <<A HREF="http://standards.aes.org/sc.cfm?ID=91">http://standards.aes.org/sc.cfm?ID=91</A>> </PRE> <!--endarticle--> <HR> <P><UL> <!--threads--> <LI>Previous message: <A HREF="000415.html">[SC-04-08] InfoComm Spectral Balance Standard </A></li> <LI>Next message: <A HREF="000417.html">[SC-04-08] InfoComm Spectral Balance Standard </A></li> <LI> <B>Messages sorted by:</B> <a href="date.html#416">[ date ]</a> <a href="thread.html#416">[ thread ]</a> <a href="subject.html#416">[ subject ]</a> <a href="author.html#416">[ author ]</a> </LI> </UL> <hr> <a href="https://secure.aes.org/mailman/listinfo/sc-04-08">More information about the SC-04-08 mailing list</a><br> Expand 000418.html 4 KB HTML - Click to view Options Copy Download Link <TITLE> [SC-04-08] InfoComm Spectral Balance Standard </TITLE> pre { white-space: pre-wrap; /* css-2.1, curent FF, Opera, Safari */ } <H1>[SC-04-08] InfoComm Spectral Balance Standard</H1> <B>Ram@rns.co.in</B> <A HREF="mailto:sc-04-08%40standards.aes.org?Subject=Re%3A%20%5BSC-04-08%5D%20InfoComm%20Spectral%20Balance%20Standard&In-Reply-To=%3C2058DC030B0245C8ACF4FDEA75B7B76A%40DESKTOPB7GPSS4%3E" TITLE="[SC-04-08] InfoComm Spectral Balance Standard">ram at rns.co.in </A><BR> <I>Thu Apr 27 08:30:13 EDT 2017</I> <P><UL> <LI>Previous message: <A HREF="000419.html">[SC-04-08] InfoComm Spectral Balance Standard </A></li> <LI>Next message: <A HREF="000420.html">[SC-04-08] InfoComm Spectral Balance Standard </A></li> <LI> <B>Messages sorted by:</B> <a href="date.html#418">[ date ]</a> <a href="thread.html#418">[ thread ]</a> <a href="subject.html#418">[ subject ]</a> <a href="author.html#418">[ author ]</a> </LI> </UL> <HR> <!--beginarticle--> <PRE>Dear Michelle, Greetings from India ! I am a member of SC-04-08. May request you to mail me a copy of the InfoComm Spectral Balance Standard . Thanks, Best regards, Ram -----Original Message----- InfoComm Spectral Balance Standard From: John Murray via SC-04-08 Sent: Tuesday, April 25, 2017 11:30 PM To: Working group on Measurement and equalization of sound systems in rooms Cc: Brigida Ann ; Streffon Michelle Subject: [SC-04-08] InfoComm Spectral Balance Standard Hello SC-04-08 group, As promised, here is the latest version of InfoComm’s Spectral Balance Standard. We call it Spectral Balance since balancing a system’s transfer function involves more than just manipulating an equalizer. If anyone in distribution wants to comment, please direct your replies to Michelle Streffon of InfoComm so that she can track them. Do not just reply to the reflector or to just me. Thanks! John Murray, Principal Optimum System Solutions (OSS) 719-332-3456 <A HREF="https://secure.aes.org/mailman/listinfo/sc-04-08">john at OptimumSS.com</A> www.OptimumSS.com _______________________________________________ SC-04-08 mailing list <A HREF="https://secure.aes.org/mailman/listinfo/sc-04-08">SC-04-08 at standards.aes.org</A> <<A HREF="http://standards.aes.org/sc.cfm?ID=91">http://standards.aes.org/sc.cfm?ID=91</A>> --- This email has been checked for viruses by Avast antivirus software. <A HREF="https://www.avast.com/antivirus">https://www.avast.com/antivirus</A> </PRE> <!--endarticle--> <HR> <P><UL> <!--threads--> <LI>Previous message: <A HREF="000419.html">[SC-04-08] InfoComm Spectral Balance Standard </A></li> <LI>Next message: <A HREF="000420.html">[SC-04-08] InfoComm Spectral Balance Standard </A></li> <LI> <B>Messages sorted by:</B> <a href="date.html#418">[ date ]</a> <a href="thread.html#418">[ thread ]</a> <a href="subject.html#418">[ subject ]</a> <a href="author.html#418">[ author ]</a> </LI> </UL> <hr> <a href="https://secure.aes.org/mailman/listinfo/sc-04-08">More information about the SC-04-08 mailing list</a><br> Expand 000419.html 10 KB HTML - Click to view Options Copy Download Link <TITLE> [SC-04-08] InfoComm Spectral Balance Standard </TITLE> pre { white-space: pre-wrap; /* css-2.1, curent FF, Opera, Safari */ } <H1>[SC-04-08] InfoComm Spectral Balance Standard</H1> <B>philip newell</B> <A HREF="mailto:sc-04-08%40standards.aes.org?Subject=Re%3A%20%5BSC-04-08%5D%20InfoComm%20Spectral%20Balance%20Standard&In-Reply-To=%3CCAEEhACk3QrqjS%2BMHnmFiXt7nrndCJN0qtcPVh98Jw4AM%3Da7wSg%40mail.gmail.com%3E" TITLE="[SC-04-08] InfoComm Spectral Balance Standard">philiprnewell at gmail.com </A><BR> <I>Thu Apr 27 08:42:59 EDT 2017</I> <P><UL> <LI>Previous message: <A HREF="000417.html">[SC-04-08] InfoComm Spectral Balance Standard </A></li> <LI>Next message: <A HREF="000418.html">[SC-04-08] InfoComm Spectral Balance Standard </A></li> <LI> <B>Messages sorted by:</B> <a href="date.html#419">[ date ]</a> <a href="thread.html#419">[ thread ]</a> <a href="subject.html#419">[ subject ]</a> <a href="author.html#419">[ author ]</a> </LI> </UL> <HR> <!--beginarticle--> <PRE>Let us not throw out the baby with the bath-water. Philip On 27 April 2017 at 14:15, Peter Mapp via SC-04-08 < <A HREF="https://secure.aes.org/mailman/listinfo/sc-04-08">sc-04-08 at standards.aes.org</A>> wrote: ><i> Wooa ! Let's not let this get out of hand. There are some very good bits </I>><i> in the standard and there are some poor bits and some plain daft bits and </I>><i> then there is the construction and inconsistencies within the document </I>><i> itself which should have been dealt with before it was ever let out for </I>><i> comment. It may be John that the IEC and ISO standards that we spend much </I>><i> of our time dealing directly with are of a higher standard than ANSI etc. </I>><i> </I>><i> Either way, it's good to know that any input will be 'appropriately' </I>><i> considered. </I>><i> </I>><i> If a standard is to work it has to be respected by the industry and fulfil </I>><i> a useful and needed function </I>><i> </I>><i> Regards </I>><i> </I>><i> Peter </I>><i> </I>><i> -----Original Message----- </I>><i> From: SC-04-08 [mailto:<A HREF="https://secure.aes.org/mailman/listinfo/sc-04-08">sc-04-08-bounces at standards.aes.org</A>] On Behalf Of </I>><i> John Woodgate via SC-04-08 </I>><i> Sent: 27 April 2017 13:00 </I>><i> To: 'Charlie Hughes'; 'Working group on Measurement and equalization of </I>><i> sound systems in rooms' </I>><i> Subject: Re: [SC-04-08] InfoComm Spectral Balance Standard </I>><i> </I>><i> That's all very well, but there is obviously a root problem that suitably </I>><i> qualified and experienced people were not involved in the preparation at an </I>><i> early stage. That's not an assumption; if they had been, there would have </I>><i> been no ground for serious criticism. </I>><i> </I>><i> It's not the only case; I'm reviewing an ANSI standard that appears to </I>><i> have been written by people who never wrote one before. One 'feature' is </I>><i> the citing of a street address no less than 13 times. </I>><i> </I>><i> With best wishes DESIGN IT IN! OOO - Own Opinions Only </I>><i> www.jmwa.demon.co.uk J M Woodgate and Associates Rayleigh England </I>><i> </I>><i> Sylvae in aeternum manent. </I>><i> </I>><i> -----Original Message----- </I>><i> From: SC-04-08 [mailto:<A HREF="https://secure.aes.org/mailman/listinfo/sc-04-08">sc-04-08-bounces at standards.aes.org</A>] On Behalf Of </I>><i> Charlie Hughes via SC-04-08 </I>><i> Sent: Thursday, 27 April 2017 12:52 </I>><i> To: Peter Mapp <<A HREF="https://secure.aes.org/mailman/listinfo/sc-04-08">peter at petermapp.com</A>>; Working group on Measurement and </I>><i> equalization of sound systems in rooms <<A HREF="https://secure.aes.org/mailman/listinfo/sc-04-08">sc-04-08 at standards.aes.org</A>>; </I>><i> david murphy <<A HREF="https://secure.aes.org/mailman/listinfo/sc-04-08">dmurphy at krix.com.au</A>>; Richard Cabot <<A HREF="https://secure.aes.org/mailman/listinfo/sc-04-08">standards at aes.org</A>>; </I>><i> John Murray <<A HREF="https://secure.aes.org/mailman/listinfo/sc-04-08">john at OptimumSS.com</A>> </I>><i> Subject: Re: [SC-04-08] InfoComm Spectral Balance Standard </I>><i> </I>><i> Hi Peter, </I>><i> My understanding is that all comments will be reviewed and efforts taken </I>><i> to address them appropriately. Please do take time to review the document </I>><i> and offer constructive criticism so that improvements can be made. </I>><i> </I>><i> Best regards, </I>><i> </I>><i> Charlie Hughes </I>><i> Excelsior Audio </I>><i> Gastonia, NC </I>><i> +1 704.675.5435 (tel) </I>><i> +1 704.678.6570 (mobile) </I>><i> www.excelsior-audio.com </I>><i> </I>><i> </I>><i> From: Peter Mapp [mailto:<A HREF="https://secure.aes.org/mailman/listinfo/sc-04-08">peter at petermapp.com</A>] </I>><i> Sent: Thursday, April 27, 2017 7:35 AM </I>><i> To: Charlie Hughes; Working group on Measurement and equalization of sound </I>><i> systems in rooms; david murphy; Richard Cabot; John Murray </I>><i> Subject: RE: [SC-04-08] InfoComm Spectral Balance Standard </I>><i> </I>><i> </I>><i> Charlie </I>><i> </I>><i> I think you need to clarify your statement "possibly making changes" . The </I>><i> document is riddled with inconsistencies and inaccuracies. If there is only </I>><i> a 'possibility' of changes being made, then it is total waste of time for </I>><i> this group to review it. It is one of the worst draft standard documents </I>><i> that I have read in a while. I am not sure whether the AES will be making a </I>><i> formal submission as per the SMPTE document or if it will be down to </I>><i> individuals to comment. </I>><i> </I>><i> </I>><i> </I>><i> Regards </I>><i> </I>><i> </I>><i> </I>><i> Peter </I>><i> </I>><i> </I>><i> </I>><i> VC SC04-08 </I>><i> </I>><i> </I>><i> </I>><i> -----Original Message----- </I>><i> From: SC-04-08 [mailto:<A HREF="https://secure.aes.org/mailman/listinfo/sc-04-08">sc-04-08-bounces at standards.aes.org</A>] On Behalf Of </I>><i> Charlie Hughes via SC-04-08 </I>><i> Sent: 27 April 2017 12:07 </I>><i> To: david murphy; Working group on Measurement and equalization of sound </I>><i> systems in rooms; Richard Cabot; John Murray </I>><i> Subject: Re: [SC-04-08] InfoComm Spectral Balance Standard </I>><i> </I>><i> </I>><i> </I>><i> Hi Everyone, </I>><i> </I>><i> Please keep in mind that this is a preliminary draft of a new standard </I>><i> from InfoComm. We will be reviewing the comments we receive and possibly </I>><i> making changes based on the feedback received. </I>><i> </I>><i> </I>><i> </I>><i> Best regards, </I>><i> </I>><i> </I>><i> </I>><i> Charlie Hughes </I>><i> </I>><i> Excelsior Audio </I>><i> </I>><i> Gastonia, NC </I>><i> </I>><i> +1 704.675.5435 (tel) </I>><i> </I>><i> +1 704.678.6570 (mobile) </I>><i> </I>><i> www.excelsior-audio.com<<A HREF="http://www.excelsior-audio.com">http://www.excelsior-audio.com</A>> </I>><i> </I>><i> </I>><i> </I>><i> </I>><i> </I>><i> </I>><i> </I>><i> -----Original Message----- </I>><i> </I>><i> </I>><i> </I>><i> And I for one would really like to read the InfoComm Standard. </I>><i> </I>><i> _______________________________________________ </I>><i> </I>><i> SC-04-08 mailing list </I>><i> </I>><i> <A HREF="https://secure.aes.org/mailman/listinfo/sc-04-08">SC-04-08 at standards.aes.org</A><mailto:<A HREF="https://secure.aes.org/mailman/listinfo/sc-04-08">SC-04-08 at standards.aes.org</A>> </I>><i> </I>><i> <<A HREF="http://standards.aes.org/sc.cfm?ID=91">http://standards.aes.org/sc.cfm?ID=91</A>> </I>><i> </I>><i> </I>><i> _______________________________________________ </I>><i> SC-04-08 mailing list </I>><i> <A HREF="https://secure.aes.org/mailman/listinfo/sc-04-08">SC-04-08 at standards.aes.org</A> </I>><i> <<A HREF="http://standards.aes.org/sc.cfm?ID=91">http://standards.aes.org/sc.cfm?ID=91</A>> </I>><i> </I>><i> _______________________________________________ </I>><i> SC-04-08 mailing list </I>><i> <A HREF="https://secure.aes.org/mailman/listinfo/sc-04-08">SC-04-08 at standards.aes.org</A> </I>><i> <<A HREF="http://standards.aes.org/sc.cfm?ID=91">http://standards.aes.org/sc.cfm?ID=91</A>> </I>><i> </I>><i> _______________________________________________ </I>><i> SC-04-08 mailing list </I>><i> <A HREF="https://secure.aes.org/mailman/listinfo/sc-04-08">SC-04-08 at standards.aes.org</A> </I>><i> <<A HREF="http://standards.aes.org/sc.cfm?ID=91">http://standards.aes.org/sc.cfm?ID=91</A>> </I>><i> </I></PRE> <!--endarticle--> <HR> <P><UL> <!--threads--> <LI>Previous message: <A HREF="000417.html">[SC-04-08] InfoComm Spectral Balance Standard </A></li> <LI>Next message: <A HREF... Expand This file was truncated for preview. Please download to view the full file. 000420.html 5 KB HTML - Click to view Options Copy Download Link <TITLE> [SC-04-08] InfoComm Spectral Balance Standard </TITLE> pre { white-space: pre-wrap; /* css-2.1, curent FF, Opera, Safari */ } <H1>[SC-04-08] InfoComm Spectral Balance Standard</H1> <B>Richard Cabot</B> <A HREF="mailto:sc-04-08%40standards.aes.org?Subject=Re%3A%20%5BSC-04-08%5D%20InfoComm%20Spectral%20Balance%20Standard&In-Reply-To=%3Cfeb7a372-e280-e977-8cc1-c0c89ebb48b3%40aes.org%3E" TITLE="[SC-04-08] InfoComm Spectral Balance Standard">standards at aes.org </A><BR> <I>Thu Apr 27 14:19:05 EDT 2017</I> <P><UL> <LI>Previous message: <A HREF="000418.html">[SC-04-08] InfoComm Spectral Balance Standard </A></li> <LI>Next message: <A HREF="000421.html">[SC-04-08] GoToMeeting Invitation - AES142 Berlin Meeting </A></li> <LI> <B>Messages sorted by:</B> <a href="date.html#420">[ date ]</a> <a href="thread.html#420">[ thread ]</a> <a href="subject.html#420">[ subject ]</a> <a href="author.html#420">[ author ]</a> </LI> </UL> <HR> <!--beginarticle--> <PRE>Ram, The document has been uploaded to the SC-04-08 repository. <A HREF="https://secure.aes.org/standards/documents/?ID=91">https://secure.aes.org/standards/documents/?ID=91</A> It may be downloaded from there. Richard Cabot AES Standards Manager On 4/27/2017 5:30 AM, Ram--- via SC-04-08 wrote: ><i> Dear Michelle, </I>><i> </I>><i> Greetings from India ! </I>><i> </I>><i> I am a member of SC-04-08. May request you to mail me a copy of the </I>><i> InfoComm Spectral Balance Standard . </I>><i> </I>><i> Thanks, </I>><i> </I>><i> Best regards, </I>><i> </I>><i> Ram </I>><i> </I>><i> -----Original Message----- InfoComm Spectral Balance Standard </I>><i> From: John Murray via SC-04-08 </I>><i> Sent: Tuesday, April 25, 2017 11:30 PM </I>><i> To: Working group on Measurement and equalization of sound systems in </I>><i> rooms </I>><i> Cc: Brigida Ann ; Streffon Michelle </I>><i> Subject: [SC-04-08] InfoComm Spectral Balance Standard </I>><i> </I>><i> Hello SC-04-08 group, </I>><i> </I>><i> As promised, here is the latest version of InfoComm’s Spectral Balance </I>><i> Standard. We call it Spectral Balance since balancing a system’s </I>><i> transfer function involves more than just manipulating an equalizer. </I>><i> </I>><i> If anyone in distribution wants to comment, please direct your replies </I>><i> to Michelle Streffon of InfoComm so that she can track them. Do not </I>><i> just reply to the reflector or to just me. </I>><i> </I>><i> Thanks! </I>><i> </I>><i> John Murray, Principal </I>><i> Optimum System Solutions (OSS) </I>><i> 719-332-3456 </I>><i> <A HREF="https://secure.aes.org/mailman/listinfo/sc-04-08">john at OptimumSS.com</A> </I>><i> www.OptimumSS.com </I>><i> </I>><i> </I>><i> </I>><i> </I>><i> _______________________________________________ </I>><i> SC-04-08 mailing list </I>><i> <A HREF="https://secure.aes.org/mailman/listinfo/sc-04-08">SC-04-08 at standards.aes.org</A> </I>><i> <<A HREF="http://standards.aes.org/sc.cfm?ID=91">http://standards.aes.org/sc.cfm?ID=91</A>> </I>><i> </I>><i> --- </I>><i> This email has been checked for viruses by Avast antivirus software. </I>><i> <A HREF="https://www.avast.com/antivirus">https://www.avast.com/antivirus</A> </I>><i> </I>><i> _______________________________________________ </I>><i> SC-04-08 mailing list </I>><i> <A HREF="https://secure.aes.org/mailman/listinfo/sc-04-08">SC-04-08 at standards.aes.org</A> </I>><i> <<A HREF="http://standards.aes.org/sc.cfm?ID=91">http://standards.aes.org/sc.cfm?ID=91</A>> </I> </PRE> <!--endarticle--> <HR> <P><UL> <!--threads--> <LI>Previous message: <A HREF="000418.html">[SC-04-08] InfoComm Spectral Balance Standard </A></li> <LI>Next message: <A HREF="000421.html">[SC-04-08] GoToMeeting Invitation - AES142 Berlin Meeting </A></li> <LI> <B>Messages sorted by:</B> <a href="date.html#420">[ date ]</a> <a href="thread.html#420">[ thread ]</a> <a href="subject.html#420">[ subject ]</a> <a href="author.html#420">[ author ]</a> </LI> </UL> <hr> <a href="https://secure.aes.org/mailman/listinfo/sc-04-08">More information about the SC-04-08 mailing list</a><br> Expand 000421.html 4 KB HTML - Click to view Options Copy Download Link <TITLE> [SC-04-08] GoToMeeting Invitation - AES142 Berlin Meeting </TITLE> pre { white-space: pre-wrap; /* css-2.1, curent FF, Opera, Safari */ } <H1>[SC-04-08] GoToMeeting Invitation - AES142 Berlin Meeting</H1> <B>AES Standards</B> <A HREF="mailto:sc-04-08%40standards.aes.org?Subject=Re%3A%20%5BSC-04-08%5D%20GoToMeeting%20Invitation%20-%20AES142%20Berlin%20Meeting&In-Reply-To=%3C4C3A8B3F-1B0E-485A-9DDA-363B1C486877%40aes.org%3E" TITLE="[SC-04-08] GoToMeeting Invitation - AES142 Berlin Meeting">standards at aes.org </A><BR> <I>Mon May 22 02:23:58 EDT 2017</I> <P><UL> <LI>Previous message: <A HREF="000420.html">[SC-04-08] InfoComm Spectral Balance Standard </A></li> <LI>Next message: <A HREF="000422.html">[SC-04-08] GoToMeeting Invitation - AES142 Berlin Meeting </A></li> <LI> <B>Messages sorted by:</B> <a href="date.html#421">[ date ]</a> <a href="thread.html#421">[ thread ]</a> <a href="subject.html#421">[ subject ]</a> <a href="author.html#421">[ author ]</a> </LI> </UL> <HR> <!--beginarticle--> <PRE>Dear SC-04-08, Please find below the call-in information for the SC-04-08 meeting scheduled to start at 10:30 CEST (08:30 GMT/UTC). Note that final decisions are not made in these meetings. Any proposals made during this meeting must be accepted by the working group as a whole based on the meeting’s output report, or a specific email call for comment. To save stressing the VoIP echo-cancellation algorithms (which sounds horrible), please consider using a headset even if you need to use the microphone in your laptop. Please also keep your microphone muted unless you need to speak. Regards, Mark Yonge AES Standards Manager (outgoing) <A HREF="https://secure.aes.org/mailman/listinfo/sc-04-08">standards at aes.org</A> AES's Meeting Please join my meeting from your computer, tablet or smartphone. <A HREF="https://www.gotomeet.me/AESStandards">https://www.gotomeet.me/AESStandards</A> You can also dial in using your phone. United States: +1 (646) 749-3112 Access Code: 196-769-573 First GoToMeeting? Try a test session: <A HREF="https://care.citrixonline.com/g2m/getready">https://care.citrixonline.com/g2m/getready</A> </PRE> <!--endarticle--> <HR> <P><UL> <!--threads--> <LI>Previous message: <A HREF="000420.html">[SC-04-08] InfoComm Spectral Balance Standard </A></li> <LI>Next message: <A HREF="000422.html">[SC-04-08] GoToMeeting Invitation - AES142 Berlin Meeting </A></li> <LI> <B>Messages sorted by:</B> <a href="date.html#421">[ date ]</a> <a href="thread.html#421">[ thread ]</a> <a href="subject.html#421">[ subject ]</a> <a href="author.html#421">[ author ]</a> </LI> </UL> <hr> <a href="https://secure.aes.org/mailman/listinfo/sc-04-08">More information about the SC-04-08 mailing list</a><br> Expand 000422.html 4 KB HTML - Click to view Options Copy Download Link <TITLE> [SC-04-08] GoToMeeting Invitation - AES142 Berlin Meeting </TITLE> pre { white-space: pre-wrap; /* css-2.1, curent FF, Opera, Safari */ } <H1>[SC-04-08] GoToMeeting Invitation - AES142 Berlin Meeting</H1> <B>Brian McCarty</B> <A HREF="mailto:sc-04-08%40standards.aes.org?Subject=Re%3A%20%5BSC-04-08%5D%20GoToMeeting%20Invitation%20-%20AES142%20Berlin%20Meeting&In-Reply-To=%3C988B40A1-11A8-438E-BA6E-BA1DA93B0C53%40coralseastudios.com%3E" TITLE="[SC-04-08] GoToMeeting Invitation - AES142 Berlin Meeting">bmccarty at coralseastudios.com </A><BR> <I>Mon May 22 02:47:45 EDT 2017</I> <P><UL> <LI>Previous message: <A HREF="000421.html">[SC-04-08] GoToMeeting Invitation - AES142 Berlin Meeting </A></li> <LI>Next message: <A HREF="000423.html">[SC-04-08] links to standards templates </A></li> <LI> <B>Messages sorted by:</B> <a href="date.html#422">[ date ]</a> <a href="thread.html#422">[ thread ]</a> <a href="subject.html#422">[ subject ]</a> <a href="author.html#422">[ author ]</a> </LI> </UL> <HR> <!--beginarticle--> <PRE>Mark, Who is chairing Sc-04-08a? Brian Sent from my iPhone ><i> On May 22, 2017, at 08:23, AES Standards via SC-04-08 <<A HREF="https://secure.aes.org/mailman/listinfo/sc-04-08">sc-04-08 at standards.aes.org</A>> wrote: </I>><i> </I>><i> Dear SC-04-08, </I>><i> </I>><i> Please find below the call-in information for the SC-04-08 meeting scheduled to start at 10:30 CEST (08:30 GMT/UTC). </I>><i> </I>><i> Note that final decisions are not made in these meetings. Any proposals made during this meeting must be accepted by the working group as a whole based on the meeting’s output report, or a specific email call for comment. </I>><i> </I>><i> To save stressing the VoIP echo-cancellation algorithms (which sounds horrible), please consider using a headset even if you need to use the microphone in your laptop. Please also keep your microphone muted unless you need to speak. </I>><i> </I>><i> Regards, </I>><i> </I>><i> Mark Yonge </I>><i> AES Standards Manager (outgoing) </I>><i> <A HREF="https://secure.aes.org/mailman/listinfo/sc-04-08">standards at aes.org</A> </I>><i> </I>><i> AES's Meeting </I>><i> </I>><i> Please join my meeting from your computer, tablet or smartphone. </I>><i> <A HREF="https://www.gotomeet.me/AESStandards">https://www.gotomeet.me/AESStandards</A> </I>><i> </I>><i> You can also dial in using your phone. </I>><i> United States: +1 (646) 749-3112 </I>><i> </I>><i> Access Code: 196-769-573 </I>><i> </I>><i> First GoToMeeting? Try a test session: <A HREF="https://care.citrixonline.com/g2m/getready">https://care.citrixonline.com/g2m/getready</A> </I>><i> </I>><i> </I>><i> _______________________________________________ </I>><i> SC-04-08 mailing list </I>><i> <A HREF="https://secure.aes.org/mailman/listinfo/sc-04-08">SC-04-08 at standards.aes.org</A> </I>><i> <<A HREF="http://standards.aes.org/sc.cfm?ID=91">http://standards.aes.org/sc.cfm?ID=91</A>> </I> </PRE> <!--endarticle--> <HR> <P><UL> <!--threads--> <LI>Previous message: <A HREF="000421.html">[SC-04-08] GoToMeeting Invitation - AES142 Berlin Meeting </A></li> <LI>Next message: <A HREF="000423.html">[SC-04-08] links to standards templates </A></li> <LI> <B>Messages sorted by:</B> <a href="date.html#422">[ date ]</a> <a href="thread.html#422">[ thread ]</a> <a href="subject.html#422">[ subject ]</a> <a href="author.html#422">[ author ]</a> </LI> </UL> <hr> <a href="https://secure.aes.org/mailman/listinfo/sc-04-08">More information about the SC-04-08 mailing list</a><br> Expand 000423.html 3 KB HTML - Click to view Options Copy Download Link <TITLE> [SC-04-08] links to standards templates </TITLE> pre { white-space: pre-wrap; /* css-2.1, curent FF, Opera, Safari */ } <H1>[SC-04-08] links to standards templates</H1> <B>Richard Cabot</B> <A HREF="mailto:sc-04-08%40standards.aes.org?Subject=Re%3A%20%5BSC-04-08%5D%20links%20to%20standards%20templates&In-Reply-To=%3Ceda6833d-0b33-ac45-67cf-660f5e0c46f8%40aes.org%3E" TITLE="[SC-04-08] links to standards templates">standards at aes.org </A><BR> <I>Wed Oct 18 14:53:47 EDT 2017</I> <P><UL> <LI>Previous message: <A HREF="000422.html">[SC-04-08] GoToMeeting Invitation - AES142 Berlin Meeting </A></li> <LI>Next message: <A HREF="000424.html">[SC-04-08] Minutes & Actions of New York Meeting </A></li> <LI> <B>Messages sorted by:</B> <a href="date.html#423">[ date ]</a> <a href="thread.html#423">[ thread ]</a> <a href="subject.html#423">[ subject ]</a> <a href="author.html#423">[ author ]</a> </LI> </UL> <HR> <!--beginarticle--> <PRE>Here are the templates for developing standards: <A HREF="http://www.aes.org/standards/development/aessc-doc-templ-150707.dot">http://www.aes.org/standards/development/aessc-doc-templ-150707.dot</A> <A HREF="http://www.aes.org/standards/development/aessc-doc-templ-150707x.dotx">http://www.aes.org/standards/development/aessc-doc-templ-150707x.dotx</A> This template document in MS Word '.dot' and ".dotx' formats provides a prepared set of paragraph styles and page layouts, and also contains information useful for practical standards writing. This template is updated from time to time; please make sure that you use the most recent. <A HREF="http://www.aes.org/standards/development/aessc-style-080913.pdf">http://www.aes.org/standards/development/aessc-style-080913.pdf</A> This guide presents some special requirements and some relevant excerpts from ISO/IEC directives to guide drafting of AES standards. Richard Cabot, PhD AES Standards Manager </PRE> <!--endarticle--> <HR> <P><UL> <!--threads--> <LI>Previous message: <A HREF="000422.html">[SC-04-08] GoToMeeting Invitation - AES142 Berlin Meeting </A></li> <LI>Next message: <A HREF="000424.html">[SC-04-08] Minutes & Actions of New York Meeting </A></li> <LI> <B>Messages sorted by:</B> <a href="date.html#423">[ date ]</a> <a href="thread.html#423">[ thread ]</a> <a href="subject.html#423">[ subject ]</a> <a href="author.html#423">[ author ]</a> </LI> </UL> <hr> <a href="https://secure.aes.org/mailman/listinfo/sc-04-08">More information about the SC-04-08 mailing list</a><br> Expand 000424.html 8 KB HTML - Click to view Options Copy Download Link <TITLE> [SC-04-08] Minutes & Actions of New York Meeting </TITLE> pre { white-space: pre-wrap; /* css-2.1, curent FF, Opera, Safari */ } <H1>[SC-04-08] Minutes & Actions of New York Meeting</H1> <B>Peter Mapp</B> <A HREF="mailto:sc-04-08%40standards.aes.org?Subject=Re%3A%20%5BSC-04-08%5D%20Minutes%20%20%26%20Actions%20of%20New%20York%20Meeting&In-Reply-To=%3Cf4924ff2db694521a3826523cadf3fc0%40CP1-L1-MB-2003.CloudPlatform1.com%3E" TITLE="[SC-04-08] Minutes & Actions of New York Meeting">peter at petermapp.com </A><BR> <I>Fri Nov 3 07:09:21 EDT 2017</I> <P><UL> <LI>Previous message: <A HREF="000423.html">[SC-04-08] links to standards templates </A></li> <LI>Next message: <A HREF="000425.html">[SC-04-08] Minutes & Actions of New York Meeting </A></li> <LI> <B>Messages sorted by:</B> <a href="date.html#424">[ date ]</a> <a href="thread.html#424">[ thread ]</a> <a href="subject.html#424">[ subject ]</a> <a href="author.html#424">[ author ]</a> </LI> </UL> <HR> <!--beginarticle--> <PRE>SC-04-08 Working Group on Sound Systems in Rooms, Meeting Report, New York - 143rd Convention, 18 October 2017 The meeting was chaired by Peter Mapp In attendance were: Richard Cabot, AES Standards Manager Jeffery Bamford, Engineering Harmonics David Murphy, Krix loudspeakers Joel Brito, Vikel Charlie Hughes, Excelsior Audio Peter Mapp, Peter Mapp Associates Bruce Olson, Olson Sound Design Neil Shaw, Menlo Scientific Ramakrishnan M K, R&S Electronics India Brian Vessa, Sony Pictures Entertainment Fred Schafer, F C Schafer Consulting Kazuho Ono, NHK Eddy Brixen, EBB Consult Steve Martz, THX David Blore, Bose David Weinberg, Tobias Engineering Aldo Soares, ARS Tecnologia As there was no formal meeting of the group at the previous convention in Berlin, there were no minutes to approve, other than Peter Mapp had agreed to chair the group AES -X218 - Measurement & Calibration of sound systems in rooms The chair pointed out that since the last meeting in New York (31-10-2015) there has been no progress. Despite the agreement of those present at the New York meeting to comment on the list of parameters proposed at the meeting and assign themselves to writing groups relating to these parameters, no response whatsoever had been received. On this basis, the parent committee, SC04 had therefore debated whether to close the group but had decided to give it one more go as it was felt to be an important topic. The Chair went through the list of agreed measurement parameters as below : * Frequency Response * Sound Pressure Level (SPL) * Max SPL * Coverage * Speech Intelligibility * Distortion * Background Noise (Acoustical) * System Noise (Acoustical) * Reverberation Time * Gain Structure * Temporal Response / Impulse Response After discussion it was decided to temporarily leave writing the section on Frequency Response, as it was understood that the InfoCom draft spectral balance standard was being revised and there was no point in duplicating effort. Additionally, it was agreed that the Temporal Response / Impulse response item would not be considered at the moment as there would likely be duplication with AES-X219 (Method of measurement for frequency and impulse response of sound systems in auditoria) though echoes / generation of focused late reflections may be considered. The size of room to which the project relates was discussed and although not restricted it was felt that the objective was for large rooms (as opposed to small rooms). Cinema could / would be a specific subset of the work The scope relates to what to measure and how to measure not what the result should be (though some basic commentary may be provided). May need to split into basic & advanced tests, bearing in mind the likely test equipment that an average contractor is likely to have. In order to make and maintain progress, the chair asked for volunteers to head up the writing of the topics listed above and set a deadline of the end of the year for initial drafts of the sections. The chair also commented that unless the attendees at the meeting took an active role, there was little point in them being there! The table below lists the topics to be covered and writing group members Topic Task leader / author Comment Frequency Response* - Awaiting InfoComm draft* - Sound Pressure Level SPL Steve Martz A or C weighting? What signal(s) to use? Max SPL Charlie Hughes Operating level definition ? Coverage David Murphy NB InfoComm document Speech Intelligibility Peter Mapp Distortion Hughes and Murphy David Murphy - electronic distortion Background Noise (Room) Neil Shaw System Noise (Acoustic) Neil Shaw System noise transmitted into room Reverberation Time Eddie Brixen) Inc EDT etc (ISO standard) Use of SS for excitation? Gain Structure Bruce Olson Temporal Response - - In Abeyance Room Acoustic Analysis Peter Mapp Will probably include Impulse Response Test Equipment Required & mic locations / types etc Should be covered in individual sections but general discussion/ section probably required * But keep thinking about how to do this Working Group members are to provide outline / draft text ASAP and by Dec 26 at the latest. The Chair will pursue Working Group members to provide their respective contributions. A template which can be used for document development can be found at: <A HREF="http://www.aes.org/standards/development/guides.cfm">http://www.aes.org/standards/development/guides.cfm</A> AES X219 - Method of measurement for frequency and impulse response of sound systems in auditoria Project remains postponed, as per 2015 NY meeting, until there is some output of X218, which may or may not involve impulse response Liaisons Nothing to report New Projects No new projects were proposed New Business No new business was proposed Next Meeting The next physical meeting will be in conjunction with the 144th AES Convention in Milan, May 2018. Virtual meetings will be held as required in advance of the Milan meeting once some content has been developed for the group to discuss. </PRE> <!--endarticle--> <HR> <P><UL> <!--threads--> <LI>Previous message: <A HREF="000423.html">[SC-04-08] links to standards templates </A></li> <LI>Next message: <A HREF="000425.html">[SC-04-08] Minutes & Actions of New York Meeting </A></li> <LI> <B>Messages sorted by:</B> <a href="date.html#424">[ date ]</a> <a href="thread.html#424">[ thread ]</a> <a href="subject.html#424">[ subject ]</a> <a href="author.html#424">[ author ]</a> </LI> </UL> <hr> <a href="https://secure.aes.org/mailman/listinfo/sc-04-08">More information about the SC-04-08 mailing list</a><br> Expand 000425.html 8 KB HTML - Click to view Options Copy Download Link <TITLE> [SC-04-08] Minutes & Actions of New York Meeting </TITLE> pre { white-space: pre-wrap; /* css-2.1, curent FF, Opera, Safari */ } <H1>[SC-04-08] Minutes & Actions of New York Meeting</H1> <B>Peter Mapp</B> <A HREF="mailto:sc-04-08%40standards.aes.org?Subject=Re%3A%20%5BSC-04-08%5D%20Minutes%20%20%26%20Actions%20of%20New%20York%20Meeting&In-Reply-To=%3C26cc443aa94747448b959d22ac0932b5%40CP1-L1-MB-2003.CloudPlatform1.com%3E" TITLE="[SC-04-08] Minutes & Actions of New York Meeting">peter at petermapp.com </A><BR> <I>Fri Nov 3 07:12:57 EDT 2017</I> <P><UL> <LI>Previous message: <A HREF="000424.html">[SC-04-08] Minutes & Actions of New York Meeting </A></li> <LI>Next message: <A HREF="000426.html">[SC-04-08] Minutes & Actions of New York Meeting </A></li> <LI> <B>Messages sorted by:</B> <a href="date.html#425">[ date ]</a> <a href="thread.html#425">[ thread ]</a> <a href="subject.html#425">[ subject ]</a> <a href="author.html#425">[ author ]</a> </LI> </UL> <HR> <!--beginarticle--> <PRE>I meant to have added, If others not present at the New York meeting would like to contribute their expertise & material, and if they have a particular topic in mind, then please contact me. Best regards Peter Mapp -----Original Message----- From: SC-04-08 [mailto:<A HREF="https://secure.aes.org/mailman/listinfo/sc-04-08">sc-04-08-bounces at standards.aes.org</A>] On Behalf Of Peter Mapp via SC-04-08 Sent: 03 November 2017 11:09 To: <A HREF="https://secure.aes.org/mailman/listinfo/sc-04-08">sc-04-08 at standards.aes.org</A> Subject: [SC-04-08] Minutes & Actions of New York Meeting SC-04-08 Working Group on Sound Systems in Rooms, Meeting Report, New York - 143rd Convention, 18 October 2017 The meeting was chaired by Peter Mapp In attendance were: Richard Cabot, AES Standards Manager Jeffery Bamford, Engineering Harmonics David Murphy, Krix loudspeakers Joel Brito, Vikel Charlie Hughes, Excelsior Audio Peter Mapp, Peter Mapp Associates Bruce Olson, Olson Sound Design Neil Shaw, Menlo Scientific Ramakrishnan M K, R&S Electronics India Brian Vessa, Sony Pictures Entertainment Fred Schafer, F C Schafer Consulting Kazuho Ono, NHK Eddy Brixen, EBB Consult Steve Martz, THX David Blore, Bose David Weinberg, Tobias Engineering Aldo Soares, ARS Tecnologia As there was no formal meeting of the group at the previous convention in Berlin, there were no minutes to approve, other than Peter Mapp had agreed to chair the group AES -X218 - Measurement & Calibration of sound systems in rooms The chair pointed out that since the last meeting in New York (31-10-2015) there has been no progress. Despite the agreement of those present at the New York meeting to comment on the list of parameters proposed at the meeting and assign themselves to writing groups relating to these parameters, no response whatsoever had been received. On this basis, the parent committee, SC04 had therefore debated whether to close the group but had decided to give it one more go as it was felt to be an important topic. The Chair went through the list of agreed measurement parameters as below : * Frequency Response * Sound Pressure Level (SPL) * Max SPL * Coverage * Speech Intelligibility * Distortion * Background Noise (Acoustical) * System Noise (Acoustical) * Reverberation Time * Gain Structure * Temporal Response / Impulse Response After discussion it was decided to temporarily leave writing the section on Frequency Response, as it was understood that the InfoCom draft spectral balance standard was being revised and there was no point in duplicating effort. Additionally, it was agreed that the Temporal Response / Impulse response item would not be considered at the moment as there would likely be duplication with AES-X219 (Method of measurement for frequency and impulse response of sound systems in auditoria) though echoes / generation of focused late reflections may be considered. The size of room to which the project relates was discussed and although not restricted it was felt that the objective was for large rooms (as opposed to small rooms). Cinema could / would be a specific subset of the work The scope relates to what to measure and how to measure not what the result should be (though some basic commentary may be provided). May need to split into basic & advanced tests, bearing in mind the likely test equipment that an average contractor is likely to have. In order to make and maintain progress, the chair asked for volunteers to head up the writing of the topics listed above and set a deadline of the end of the year for initial drafts of the sections. The chair also commented that unless the attendees at the meeting took an active role, there was little point in them being there! The table below lists the topics to be covered and writing group members Topic Task leader / author Comment Frequency Response* - Awaiting InfoComm draft* - Sound Pressure Level SPL Steve Martz A or C weighting? What signal(s) to use? Max SPL Charlie Hughes Operating level definition ? Coverage David Murphy NB InfoComm document Speech Intelligibility Peter Mapp Distortion Hughes and Murphy David Murphy - electronic distortion Background Noise (Room) Neil Shaw System Noise (Acoustic) Neil Shaw System noise transmitted into room Reverberation Time Eddie Brixen) Inc EDT etc (ISO standard) Use of SS for excitation? Gain Structure Bruce Olson Temporal Response - - In Abeyance Room Acoustic Analysis Peter Mapp Will probably include Impulse Response Test Equipment Required & mic locations / types etc Should be covered in individual sections but general discussion/ section probably required * But keep thinking about how to do this Working Group members are to provide outline / draft text ASAP and by Dec 26 at the latest. The Chair will pursue Working Group members to provide their respective contributions. A template which can be used for document development can be found at: <A HREF="http://www.aes.org/standards/development/guides.cfm">http://www.aes.org/standards/development/guides.cfm</A> AES X219 - Method of measurement for frequency and impulse response of sound systems in auditoria Project remains postponed, as per 2015 NY meeting, until there is some output of X218, which may or may not involve impulse response Liaisons Nothing to report New Projects No new projects were proposed New Business No new business was proposed Next Meeting The next physical meeting will be in conjunction with the 144th AES Convention in Milan, May 2018. Virtual meetings will be held as required in advance of the Milan meeting once some content has been developed for the group to discuss. _______________________________________________ SC-04-08 mailing list <A HREF="https://secure.aes.org/mailman/listinfo/sc-04-08">SC-04-08 at standards.aes.org</A> <<A HREF="http://standards.aes.org/sc.cfm?ID=91">http://standards.aes.org/sc.cfm?ID=91</A>> </PRE> <!--endarticle--> <HR> <P><UL> <!--threads--> <LI>Previous message: <A HREF="000424.html">[SC-04-08] Minutes & Actions of New York Meeting </A></li> <LI>Next message: <A HREF="000426.html">[SC-04-08] Minutes & Actions of New York Meeting </A></li> <LI> <B>Messages sorted by:</B> <a href="date.html#425">[ date ]</a> <a href="thread.html#425">[ thread ]</a> <a href="subject.html#425">[ subject ]</a> <a href="author.html#425">[ author ]</a> </LI> </UL> <hr> <a href="https://secure.aes.org/mailman/listinfo/sc-04-08">More information about the SC-04-08 mailing list</a><br> Expand 0 Comments Public All Members My Connections Only Me PublicAll MembersMy ConnectionsOnly Me Public All Members My Connections Only Me
