| 发明名称 |
AUDIO ENCODER AND DECODER AND METHODS FOR ENCODING AND DECODING AN AUDIO SIGNAL |
| 摘要 |
<p>The present invention relates to a frequency domain based method of encoding and decoding an audio signal, wherein an adaptive spectral code book is updated with synthesized frequency domain representations of a time domain signal segment. A frequency analysis is performed of a received time domain signal segment in order to obtain a frequency domain representation, and the adaptive spectral code book is searched for a first approximation of the frequency domain representation. A fixed spectral code book is searched for an approximation of the residual frequency representation. A synthesized frequency domain representation may be generated from the two approximations.</p> |
| 申请公布号 |
WO2012008891(A1) |
申请公布日期 |
2012.01.19 |
| 申请号 |
WO2010SE50852 |
申请日期 |
2010.07.16 |
| 申请人 |
TELEFONAKTIEBOLAGET L M ERICSSON (PUBL);NORVELL, ERIK;BRUHN, STEFAN;POBLOTH, HARALD |
发明人 |
NORVELL, ERIK;BRUHN, STEFAN;POBLOTH, HARALD |
| 分类号 |
G10L19/00;G10L19/038;G10L19/06;G10L19/12 |
主分类号 |
G10L19/00 |
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