You have a digital audio recording of orchestra music. The bit rate used to create the digital audio recording is 176,400 Hz. What does this mean?

A. There were 176,400 samples of the orchestra music taken per cycle.
B. The maximum audible frequency for the orchestra recording is 176,400 Hz.
C. The loudness of the orchestra music is beyond the threshold of pain.
D. There were 176,400 samples of the orchestra music taken every second.

D. There were 176,400 samples of the orchestra music taken every second.

Explanation:

In Signal processing, whenever we convert a analog signal into Digital signal. We makes the sample of that audio signal. These samples are calculated using Nyquist Theorem. These are measured in the unit of samples per second which is called sampling rate. According to the Nyquist theorem, for better performance in digital signal, sampling rate should be double of the actual frequency of the signal in analog.

In given case 176,400 Hz is the sampling rate of the digital audio of the orchestra which means 176,400 samples per second.