Patent ID: 9485597
Filing Date: 2016-11-01
CPC Classification: G10L,H04R

Claim Text:
1. A method of processing a sound signal comprising a harmonic sound having multiple harmonics, the method comprising: obtaining, by a computer processor, a first portion of the sound signal; transforming the first portion of the sound signal from time domain using a set of filters to generate a set of transform coefficients, each filter being specified by a chirp rate and a frequency, the set of filters comprising different chirp rate and frequency values; generating a multi-dimensional representation using the computer processor, wherein: determining a first common fractional chirp rate corresponding to the multiple harmonics of the harmonic sound in the first portion of the sound signal using the multi-dimensional representation, wherein a chirp rate of a n determining a pitch corresponding to the multiple harmonics in the first portion of the sound signal using the first common fractional chirp rate; generating multiple synthesized harmonics using an oscillator and the pitch for each harmonic of the multiple harmonics; and summing the multiple synthesized harmonics to obtain an audio signal.