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What is the frequency range for a speech signal?

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in Physics – Class 12 by (135k points)
What is the frequency range for a speech signal?

(a) 20 Hz to 20 kHz

(b) 20 kHz to 20 MHz

(c) 300 Hz to 3100 Hz

(d) 30 Hz to 310 Hz

I had been asked this question by my college professor while I was bunking the class.

The doubt is from Communication Systems in portion Communication Systems of Physics – Class 12

1 Answer

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Best answer
The correct option is (c) 300 Hz to 3100 Hz

The explanation: For speech signals, the frequency range of 300 Hz to 3100 Hz is considered adequate. Therefore, speech signals require a bandwidth of 2800 Hz (3100 Hz – 300 Hz) for commercial telephonic communication.

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