The pitch of an acoustic device can be increased by

The pitch of an acoustic device can be increased by
A. decreasing the loudness
B. increasing the intensity
C. increasing the frequency
D. decreasing the intensity

Correct Option: Answer is C
The sensation of a frequency is commonly referred to as the pitch of a sound. A high pitch sound corresponds to a high frequency sound wave and a low pitch sound corresponds to a low frequency sound wave. … Such sound waves form the basis of intervals in music.

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