Audio Engineering Society Standards Committee

Comments on revision of AES26 polarity standard

[Last printing 20 June 2001] Comments to date on Draft Revised AES26-xxxx DRAFT REVISED AES recommended practice for professional audio interconnections -- Conservation of the polarity of audio signals published 2000-03-09 for comment.

Smith 2001-06-04

From:   SMTP%""  4-JUN-2001 00:25:32.73
Subj: Draft Revised AES26-xxxx

Dear AES,

I have a comment on this draft standard, I'm not a member yet but applying this week.

This draft seems very clear and easy to implement in practical terms.

My only further comment is that it might be wise someday to delve further into multiple speaker system polarity. This area is a quagmire and always has been. It probably needs a standard that, much like analog magnetic recording, has a test method built into it. Something like a near field probe microphone methodology (yes, acoustic wavelength would be a concern in such a method).


Hal Smith, MS
Member, IEEE Broadcast Technology Section
AM/FM Services Company
7312 Shannon Circle
Edmond, OK 73034
FAX 348-6600

Reply by J. McKnight, chair of Sc-05-01

Dear Mr Smith,

Thank you for your comment on the Draft Revised AES26-xxxx, which affirms our conclusion in Clause 10.1.3 that we do not now have the technical basis for standardizing the polarity of multiple-transducer loudspeakers.

We agree with you that "it might be wise someday to delve further into multiple speaker system polarity". Unfortunately we do not now have anyone who is qualified and willing to undertake such a project. If you would like to undertake such a project, or if you know someone who would, please contact us again.

Please reply if this reply is not acceptable to you. You may also ask us to consider your comments again for the next revision of the document. You may also appeal our decision to the Standards Secretariat.

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