Re: 3 dB bandwidth

On 6/28/05 11:52 PM, in article
1gywp96.nm3oeczrw7bwN%poppy.uk@xxxxxxxxxxxxxxxxxxxxxxxx, "Adrian Tuddenham"
<poppy.uk@xxxxxxxxxxxxxxxxxxxxxxxx> wrote:

> Pooh Bear <rabbitsfriendsandrelations@xxxxxxxxxxx> wrote:
>
>> Adrian Tuddenham wrote:
>>
>>> Pooh Bear <rabbitsfriendsandrelations@xxxxxxxxxxx> wrote:
>>>
>>>> Adrian Tuddenham wrote:
>>>>
>>>>> Pooh Bear <rabbitsfriendsandrelations@xxxxxxxxxxx> wrote:
>>>>>
>>>>>> Bell Labs definition is *not* the standard. Trading Standards would
>>>>>> laugh at an attempt to refer to it.
>>>>>>
>>>>>> The standard is set by the AES.
>>>>>
>>>>> Could you let me have the name or number (or URL) of the standard you
>>>>> are referring to.
>>>>
>>>> AES-R2-2004 - also see the referenced IEC standards.
>>>>
>>>> http://www.aes.org/publications/standards/courtesy.cfm?ID=9
>>>
>>> Thanks, I'll see if I can get hold of a copy - unless you can just post
>>> the relevant re-definition of the decibel from your own copy.
>>
>> Hmmmm.... As an AES member I *cannot* re-distribute internal documents sadly
>> ( even for educational purposes ) without prejudicing my member status.
>
> So the re-definition of the decibel is an internal document?
>
> I think the time has come to draw this nonsense to a close before you or
> Kevin tell us that the volt and ampere have also been re-defined to suit
> the convenience of audio engineers.

The document is Internal to the AEC. This is common for working documents
within standards bodies.

I downloaded the courtesy copy and looked around the AEC pages. It appears
to be a professional organization, but I don't see any ANSI, or other
affiliation, which bothers me a lot.

However, the AEC is taking into account definitions used by some Standards
bodies (but perhaps not all), and appears to NOT be setting new definitions,
but providing *guidelines* for the AEC member organizations use of the
expressions. Guidelines are NOT standards, so where's the problem except
between the parts of the audio industry who do and do not belong to the AEC?

Don


.

Relevant Pages

  • Re: 3 dB bandwidth
    ... >>> member status. ... >> So the re-definition of the decibel is an internal document? ... > I downloaded the courtesy copy and looked around the AEC pages. ... the AEC is taking into account definitions used by some Standards ...
    (sci.electronics.design)
  • Re: 3 dB bandwidth
    ... >> I downloaded the courtesy copy and looked around the AEC pages. ... the AEC is taking into account definitions used by some Standards ... >> between the parts of the audio industry who do and do not belong to the AEC? ... I suggest that everyone take advantage of a free download of the RES ...
    (sci.electronics.design)
  • Re: A semi-founded set theory:
    ... is an axiom. ... Pairing is easily proved from Countability ... AbEc(bec & Ax(xec -> aec), ... In this theory no set can be in itself nor a member ...
    (sci.math)