Patent ID: 6694292
Filing Date: 2004-02-17
Classification: G10L

Abstract:
A speech and musical signal encoding apparatus comprising:an encoding unit for encoding an input signal upon splitting the input signal into a plurality of bands; and a generating unit for generating a reconstructed signal using a multipulse sound source signal that corresponds to each band, the multipulse sound source signal for each band being represented as a vector representing different pulse positions for each of the multiple pulses making up the multipulse sound source signal for the corresponding band, wherein a position obtained by shifting the position of each pulse which defines the multipulse signal in the band(s) is used when defining a multipulse signal in the other band(s), and wherein the multipulse sound source signal for one of the band(s) differs from the multipulse sound source signal for another of the band(s) by virtue of a pulse position revision quantity vector that is obtained and is added to the vector for the one of the band(s) in order to obtain the multipulse sound source signal for the other of the band(s), the vector adding operation being performed by the generating unit.