System and method for conforming an audio input to a musical key
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United States of America Patent
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Nov 3, 2015
Grant Date -
Feb 27, 2014
app pub date -
Oct 30, 2013
filing date -
Jun 1, 2009
priority date (Note) -
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Abstract
A system and method for conforming an audio input to a musical key. Audio input is received and the musical key is determined. Sequentially for each consecutive note, a pitch value for each note and an interval between each preceding and subsequent note is determined; alternative subsequent notes based on the musical key and the pitch value of the subsequent note are determined; each interval between each alternative subsequent note and each respective note of the alternative subsequent notes corresponding to the preceding note is scored based on the interval between the preceding note and the subsequent note of the audio input; and a best interval is selected for each alternative subsequent note. A best-match note is selected for each note of the audio input based on the best intervals of all the notes, and each audio input note is conformed to a frequency of the best-match note.
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