A. Musical notes consist of the combination of sounds of regular frequency
B. The combination of overtones produced by an instrument determines the quality of the sound
C. the loudness of sound is determined by its frequency
D. the pitch of a note depends on the frequency of vibration of the source
E. Noise can be produced by a combination of sounds of irregular frequency

Correct Answer:

Option A – Musical notes consist of the combination of sounds of regular frequency

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