Why can we recognize our friend's voice over a telephone even without seeing them?

Type: MCQ • Marks: 1

A. Because of distinct vocal timbre (quality) and harmonic overtones unique to each individual

B. Because phone signals change voice speed

C. Because of pitch alone

D. Because of volume

Explanation

Vocal tract shapes produce unique harmonic spectra that define personal timbre.

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Class 9th Science (MCQ)

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