Estimating pitch using symmetry characteristics
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United States of America Patent
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Jan 17, 2017
Grant Date -
Apr 7, 2016
app pub date -
Dec 15, 2015
filing date -
Sep 30, 2014
priority date (Note) -
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Abstract
An estimate of a pitch of a signal may be computed by using correlations of frequency portions of a frequency representation of the signal. An initial pitch estimate may be obtained and frequency portions of the frequency representation may be identified using multiples of the initial pitch estimate. Correlations of the frequency portions may be computed, and a score for the initial pitch estimate may be determined using the correlations. A second pitch estimate may be determined using the first score, and the process may be repeated.
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