发明名称 APPARATUS AND METHOD FOR ECHO CONTROL IN PARAMETER DOMAIN
摘要 The present invention relates to call voice signal processing, and particularly, to apparatus and method for echo control in parameter domain. The apparatus includes: an echo detection module configured to extract parameter domain characteristic parameters of a far-end output signal and a near-end input signal, respectively, through parameter domain decoding, and detect whether a near-end input signal frame is an echo frame according to the parameter domain characteristic parameters; and a transition module configured to re-quantize the fixed codebook gain, the adaptive codebook gain and an LSF prediction error in the near-end input signal frame when the echo detection module detects the near-end input signal frame as a non-echo frame, and replace the original fixed codebook gain, the original adaptive codebook gain and the original LSF in the near-end input signal frame.
申请公布号 US2013028409(A1) 申请公布日期 2013.01.31
申请号 US201213555502 申请日期 2012.07.23
申请人 LI JIE;LIANG JUNBIN;LI YULONG;QIN JINGFAN 发明人 LI JIE;LIANG JUNBIN;LI YULONG;QIN JINGFAN
分类号 H04M9/08 主分类号 H04M9/08
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