An audio signal is decomposed into lower and upper sub-band and at least the noise component of the upper sub-band is encoded. At the decoder the audio signal is synthesised by a decoding means which utilises a synthesised noise excitation signal and a filter to reproduce the noise component in the upper sub-band.
申请公布号
WO9852187(A1)
申请公布日期
1998.11.19
申请号
WO1998GB01414
申请日期
1998.05.15
申请人
HEWLETT-PACKARD COMPANY;TUCKER, ROGER, CECIL, FERRY;SEYMOUR, CARL, WILLIAM;ROBINSON, ANTHONY, JOHN
发明人
TUCKER, ROGER, CECIL, FERRY;SEYMOUR, CARL, WILLIAM;ROBINSON, ANTHONY, JOHN
