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RE: Questions for audio gurus

 Subject: RE: Questions for audio gurus "Don Lloyd" <> Wed, 22 Feb 2006 18:07:34 -0800
 ```Julius Thyssen wrote: As the Whittaker-Nyquist-Kotelnikov-Shannon sampling theorem states; When sampling a band-limited signal (e.g., converting from an analogue signal to digital), the sampling frequency must be greater than twice the input signal bandwidth in order to be able to reconstruct the original perfectly from the sampled version. I'm not sure I understand this here Nyquist limit. Wouldn't the sampling frequency have to be _much_ greater than twice the highest frequency being recorded? F'rinstance, say you want to record a 22.05KHz sine wave. The bes= t you could do with a 44.1KHz sample rate is a 22.05KHz square wave, regardless of bit depth. The quantitative frequency would be present, but i= n a considerably altered shape. Seems like the minimum sample rate would have to be, oh, say, 5,644.8KHz. -- Don ________________________________________________________________________ ________________________________________________________________________ ```
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