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Subject: Re: Frequency as it relates to recording quality
From: Eric Woudenberg, Editor (
Date: 2003-04-09

Nyquist sampling theorem:

This theorem defines the process of sampling audio with a digital
system. Amongst other things, it states that the sampling frequency of
a digital audio system must be at least twice that of the highest
audio frequency, otherwise aliasing will occur. The Nyquist theorem
was developed at Bell Labs by C. Shannon and H. Nyquist. See Aliasing.


"ajf" writes:

>Shannon's law: A statement defining the theoretical maximum rate at which
>error-free digits can be transmitted over a bandwidth-limited channel in the
>presence of noise, usually expressed in the form C = W log2(1 + S /N ),
>where C is the channel capacity in bits per second, W is the bandwidth in
>hertz, and S /N is the signal-to-noise ratio
>Eric Woudenberg, Editor writes:
>> "ajf" writes:
>>>According to Shannon's Law, we can hear sounds at a frequency up to 1/2 the
>> Nyquist's?
>> Rick

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