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input to output clock averaging

As I posted several times in the past, ASRC does not get rid of jitter, but merely transforms it to noise.

Actually, a large part of the jitter reduction is based on averaging the delay from the input to output clock by using thousands of samples to determine which coefficient is used for the output data point. The size of the input buffer will determine the cutoff frequency, typically below 5 Hz for the better parts. Not sure I follow how this converts the jitter to noise, although surely the jitter below the cutoff point will be.

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