Patent ID: 7373294

Claim:
A method for generating an output audio signal from an input audio signal having a number of pitch cycles, each input pitch cycle represented by a plurality of data points, the method comprising a combination of resampling and harmonic scaling, wherein: the resampling comprises changing the number of data points in an audio signal, wherein the resampling comprises an upsampling phase followed by a downsampling phase to achieve a desired resampling ratio, wherein: the upsampling phase comprises upsampling the audio signal based on an upsampling rate value to generate an upsampled signal; and the downsampling phase comprises downsampling the upsampled signal based on a downsampling rate value selected to achieve, in combination with the upsampling phase, the desired resampling ratio; and the harmonic scaling comprises changing the number of pitch cycles in an audio signal, wherein the output audio signal has a pitch that is different from the pitch of the input audio signal.