Question: A linear delta modulator is designed to operate on speech signals limited to 3.4 kHz; the specifications of the modulator are as follows: Sampling rate

A linear delta modulator is designed to operate on speech signals limited to 3.4 kHz; the specifications of the modulator are as follows:

  • Sampling rate = l0 ƒNyquist, where ƒNyquist is the Nyquist rate of the speech signal.
  • Step size ∆ = 100 mV.

The modulator is tested with a 1-KHz sinusoidal signal. Determine the maximum amplitude of this test signal required to avoid slope overload.

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