A) Intensity
B) waveform
C) Frequency
D) Loudness
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The correct answer is C) Frequency
The pitch of the sound is measured by its frequency. Frequency refers to the number of complete sound waves that pass a given point in a certain period of time.
A high-pitch sound corresponds to a high-frequency sound wave and a low-pitch sound corresponds to a low-frequency sound wave.
Pitch is primarily determined by the fundamental frequency of a note, which is the lowest frequency component of a complex sound wave. Perceived loudness is related to the intensity or energy per time per area arriving at the listener’s ear.
The loudness of a sound depends on the amplitude of sound waves, which is the amount of energy in each wave. Sound frequency (pitch) is measured in Hertz (Hz), with 1 Hz being one cycle per second. The modern orchestra tunes to the note A-440, or the note whose frequency is 440 Hz.