Question

The digital modulation scheme in which the step size is not fixed is.



Adaptive delta modulation

Delta modulation

PCM

DPCM




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Answer 1

Answer:

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Explanation:

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Answer 2

Answer:

The digital modulation scheme in which the step size is not fixed is adaptive Delta modulation.

Explanation:

• This is a type of delta modulation technique. There are problems with digital modulation when determining the step size, which can affect the quality of the output waves.
• The sharp edges of the modulated signal require a large step size, and the small edges of the message require a small step size.
• This type of detail is ignored by delta modulation techniques.
• Therefore, you need to control the step size as needed so that you can get the sample output the way you want.

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