Which of the following statements is not true?
-
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