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Nyquist
Frequency. When you are shopping for digital studios, you may on occasion
hear a salesperson refer to something know as the Nyquist Frequency, named after
the man who discovered it, Mr. Harry Nyquist. What this number refers to is the
highest frequency (pitch) that a sample is capable of representing. Nyquist discovered
that this number is always exactly half of the sample rate. In other words, if
you have a sample rate of 48 kHz, you will be able to accurately record and represent
frequencies up to 24 kHz. Still, not to worry: Humans can only hear frequencies
up to 20 kHz.
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