Patent ID: 7580833
Filing Date: 2009-08-25
Classification: G10L,G11B

Abstract:
1. A method of processing a digital audio signal, the method comprising: receiving a playback rate associated with a portion of a digital audio signal, wherein the received playback rate differs from a rate at which the digital audio signal was recorded; dividing, using a processor, a channel of the digital audio signal into a plurality of windows, wherein each window includes a waveform; performing one or more cross-correlation evaluations for at least a first window and a second window of the channel to determine an appropriate overlap, wherein the second window immediately succeeds the first window and a first cross-correlation evaluation is performed using an ideal overlap; and averaging, using the processor, one or more sample values associated with a first waveform included in the first window with one or more corresponding sample values associated with a second waveform included in the second window for the determined appropriate overlap to generate a rate-modified audio signal.