Patent ID: 6487536
Filing Date: 2002-11-26
Classification: G10H,G10L

Abstract:
A time-axis compression/expansion method for time-axis compressing/expanding a multichannel signal comprising a plurality of channel signals at a specified compression/expansion rate, comprising the steps of:sequentially cutting out waveform segments from each of the channel signals; determining a cutting starting point of a leading end portion of a waveform segment of the cut out waveform segments following each preceding waveform segement of the cut out waveform segments, commonly between said channel signals, based on two portions of a waveform of a synthesized signal formed by synthesizing said channel signals within a range of a predetermined search starting point to a predetermined search ending point of said waveform of said synthesized signal, said two portions corresponding to a time period over which cross-fading is to be carried out and being most similar to each other; and splicing together said preceding waveform segment and said following waveform segment cut from each of said channel signals based on the determined cutting starting point, by cross-fading a trailing end portion of said preceding waveform segment and the leading end portion of said following waveform segment.