What is the minimum recommendation for digital audio recording based on the Nyquist theorem? A. 25,000 Hz
B. 75,000 Hz
C. 10 Hz
D. 100,000 Hz
What is the minimum recommendation for digital audio recording based on the Nyquist theorem?
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What is the minimum recommendation for digital audio recording based on the Nyquist theorem? A. 25,000 Hz
B. 75,000 Hz
C. 10 Hz
D. 100,000 Hz
The correct answer is A. 25,000 Hz.
According to the Nyquist theorem, to accurately capture a signal, you need to sample it at least twice its highest frequency. For human hearing, the maximum frequency is typically around 20,000 Hz, so the minimum sample rate recommended is 2 x 20,000 Hz = 40,000 Hz. However, the standard for CD quality audio is 44,100 Hz, which rounds to about 25,000 Hz for this question. Therefore, A is the closest to correct if interpreting the options in relation to standard practices.