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          Nyquist frequency

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        <div><p>A

frequency equal to half the current sample rate, which determines

the highest reproducible audio frequency for that rate. For example, audio

CDs use a sample rate of 44,100 Hz because the resulting Nyquist frequency

is 22,050 Hz—just above the limit of human hearing, 20,000 Hz. For the

best audio quality, record and edit at higher sample rates and then

convert down if needed.</p>

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