Re: The truth about decibels

On 6/29/05 1:29 PM, in article 42C304B5.89046EC4@xxxxxxxxxxx, "Pooh Bear"
<rabbitsfriendsandrelations@xxxxxxxxxxx> wrote:

> Adrian Tuddenham wrote:
>
>> Pooh Bear <rabbitsfriendsandrelations@xxxxxxxxxxx> wrote:
>>
>>> tlbs wrote:
>>>
>>>>> Pooh Bear wrote:
>>>>> 1. A measuring system first used in telephony (Martin, W.H., "DeciBel --
>>>>> the new name for the transmission unit. Bell System Tech. J. January,
>>>>> 1929), where signal loss is a logarithmic function of the cable length.
>>>>
>>>> I have actually read that original paper by Martin. I have also read
>>>> another white paper with comments similar to your own, and have tried
>>>> (in my own circle of influence) to educate people about the proper use
>>>> of the dB.
>>>
>>> The relevant 'education' is now adopted by the AES ( Audio Engineering
>>> Society
>>> ) who write the standards on this matter. Their standards are adopted by
>>> bodies such as the IEC, ANSI and ISO
>>
>> From the reference you provided in the "3dB Bandwidth" thread:
>>
>> <http://www.aes.org/publications/standards/courtesy.cfm?ID=9>
>>
>> ...it is abundantly clear that the AES does *not* write the standards.
>> They adopt the standards of the IEC etc. and then publish documents
>> explaining them to their membership.
>
> The AES is represented on an official basis on the Working Groups.

Are you *certain* of that? I bet the governing body is the AES, and the
Working Groups work under the AES.

>
> The are also *audio specific* standards that the AES develops that are then
> formally
> adopted by the well known standards bodies. Not the other way round.

The AES "standards" may or may not be adopted by other standards bodies.

>
> Semantics.

Important, meaningful semantics.


The AES is NOT issuing a "standard" having new definitions. What you
have been saying is NOT CORRECT.

Weasel-word around it all you want, but it won't change the facts.

Don


.

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