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Criteria for Synthesizing Narrowband Digital Dither at Nyquist

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Specifications, tests and measurements for evaluating synthesized high-frequency digital dither for truncation or quantization. Includes: linear transfer, dither probability density function (PDF), output error statistics, modulation of output error power and spectrum, dither power, dither spectrum, chi-squared statistics, modulation of audible noise power and spectrum, dither artifacts, autocorrelation and cross-correlations, dither envelopes and periodicities, reduction in signal distortion, and PDF windows. Parameters are provided for listening tests, and a lively interplay traced between the results of such listening tests and various theoretical models.

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