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Re: A/B listening tests

hello bill, you write: In any digital system, distortion goes up as you 
approach the lowest volumes.
i am curious and would like to experience that. any suggestion for a setup 
to experience this?

(equiment: pc into tc konnekt into sennheiser hd 25, 39 year old male 
o)   )

are you talking about actual distortion, like in: oops, the red lights 
or change of sound color?
or is it the kind of warbling noise that comes up if you sample something 
soft and turn up the volume?


----- Original Message ----- 
From: "Bill Fox" <billyfox@soundscapes.us>
To: <Loopers-Delight@loopers-delight.com>
Sent: Friday, July 13, 2007 4:34 PM
Subject: Re: A/B listening tests

> Stefan Tiedje wrote:
>> Bill Fox schrieb:
>>> Speaking of A/B testing, according to what I've read, the difference
>>>  between 16 and 24 bit digital can be heard much more easily than the
>>>  difference between 44.1kHz and 192kHz.
>> That means you read it and believe it?
> Actually, in this particular case, I do and here's why.  Recording at 
> higher sampling frequencies eat up far more more memory than increased 
> depth and increases system costs.  Then you have to down sample to 44.1 
> order to release product which requires expensive software to do right. 
> (Why not record at 176.4kHz and avoid the high end software?)  It 
> the hardware and software industry to convince us that 16bit/192kHz is 
> superior to 24bit/44.1kHz.  (Of course 24bit/192kHz is even better!) 
> Since the 24bit/44.1kHz supposedly sounds better and costs me less, I'll 
> go that way.  I have also spoken to industry people who confirm the 
> increased bit depth is a far more audible improvement than increased 
> sample frequency.  I have not heard the other system nor do I have a 
> where I could hear the difference so I can't speak from personal 
> experience.  However, the golden ears in the industry who say that you 
> need 192kHz all seem to have a stake in its success.  There is just as 
> much physics at work when increasing and linearizing dynamic range.  As 
> engineer who believes in the Nyquist theorem and as an over 50 year old 
> male who (as I've read) can't hear much above 12kHz, I see no reason to 
> to 192kHz, especially when most listening environments are far less than 
> ideal and most people are only going to be listening to a crappy MP3 
> anyway.
> A higher sampling frequency gives you a wider frequency response that I 
> supposedly can't hear.  Increased bit depth reduces the noise floor and 
> decreases distortion due to LSB errors.  In any digital system, 
> goes up as you approach the lowest volumes.  These are things that I 
> hear.
> Cheers,
> Bill