Frequency range for speech signals is

300 Hz to 3100 Hz

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300 Hz to 3100 MHz

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300 kHz to 3100 MHz

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None of these

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Solution

The correct option is A 300 Hz to 3100 Hz
The speech signal don't have much information to carry .So, their frequency range is low ,from 300 HZ to 3100HZ.

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