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From: firstname.lastname@example.org (Gibbo)
Date: 04 Nov 2002 20:56:17 GMT
Organization: AOL, http://www.aol.co.uk
Subject: Re: Bullshit wins v. science
"Kevin Aylward" email@example.com wrote:
>"John Woodgate" wrote in message
>> I read in sci.electronics.design that Kevin Aylward
>> wrote (in
>> .ntli.net>) about 'Bullshit wins v. science', on Mon, 4 Nov 2002:
>> >This is a misconception. The ear is *absolutly* *insensitive* to
>> >A static phase shift is quite undetectable. It is a Fourier analyser.
>> It is essential in such a case to distinguish 'polarity' from 'phase'.
>> polarity inversion of a complex signals cannot be described as a
>> valued 'phase shift'.
>I agree that this is a classic subtlety. A waveform with a positive
>triangle shape and a square negative illustrates the difference between
>phase and inversion.
>I note your comment in the other post that there are claims on detection
>of polarity. I'm very sceptical on this. There may be a possible
>mechanism for this if the sound was *very* loud, since you can increase
>pressure to whatever you want, but only reduce pressure to zero. This
>means distortion would be different............
Interesting you should say this. In another post I said I (and many others)
*could* detect polarity inversion but only on the attack. As I'm a guitarist
"attack" usually goes hand in hand with a les paul and and large valve amp
turned up too loud.
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