Methods and apparatus for use in sound modification comparing time alignment data from sampled audio signals
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United States of America Patent
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Nov 2, 2010
Grant Date -
Jul 27, 2006
app pub date -
Jan 26, 2006
filing date -
Jan 27, 2005
priority date (Note) -
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Abstract
A digitised audio signal, such as an amateur's singing, and a digital guide audio signal are supplied to a time alignment process that produces a time-aligned new signal, time-aligned to the guide signal. Pitch along the time-aligned new signal and along the guide signal is measured in processes and which supply these measurement to a pitch adjustment calculator which calculates a pitch correction factor C's(Fps) from these measurements and the nearest octave ratio of the signals. A pitch changing process modulates the pitch of the time-aligned new signal to produce a time-aligned and pitch adjusted new signal.
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