Question

define shrill and gruff voice ?
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Answer 1

Answer:

The sound produced by an object vibrating with a high frequency (low wavelength), its pitch is high and the sound is a shrill sound. The sound produced by an object vibrating with a low frequency(high wavelength), its pitch is low and the sound is a gruff sound.

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Answer 2

Answer:

if a sound has a low frequency it is said to have low pitch and called is a gruff usually a female as usual voice and a male has a gruff or deep voice does we can say that pitch is the measure of sound