Discussion
The idling pattern a delta modulator produces on a steady input is called ______ noise.
Answer: D
The one-step hunting about a constant value is granular noise. Slope overload is the opposite failure, when the input moves faster than the steps can follow. Quantisation noise is the general rounding error of any digital coder. And thermal noise comes from the hardware. Because granularity favours a small step and overload a large one, the step size has an optimum, which is precisely what adaptive schemes exploit. Framing the question as which quantity the change acts upon makes the answer follow without calculation.
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