发明名称 |
METHOD FOR DETERMINING A STEREO SIGNAL |
摘要 |
The invention relates to a method (200) for determining an output stereo signal (Y1, Y2) comprising: determining (201 ) a first differential signal (x1) based on a difference of a first input audio channel signal (m1) and a filtered version of a second input audio channel signal (m2) and determining a second differential signal (x2) based on a difference of the second input audio channel signal (m2) and a filtered version of the first input audio channel signal (m1); determining (203) a first power spectrum (P1) based on the first differential signal (x1) and determining a second power spectrum (P2) based on the second differential signal (x2); determining (205) a first weighting function (W1) and a second weighting function (W2) as a function of the first power spectrum (P1) and the second power spectrum (P2); wherein the first weighting function (W1) and the second weighting function (W2) comprise an exponential function; and filtering (207) a first signal, which represents a first combination of the first input audio channel signal (m1) and the second input audio channel signal (m2), with the first weighting function (W1) to obtain a first output audio channel signal (Y1) of the output stereo signal (Y1, Y2), and filtering a second signal, which represents a second combination of the first input audio channel signal (m1) and the second input audio channel signal (m2), with the second weighting function (W2) to obtain a second output audio channel signal (Y2) of the output stereo signal (Y1; Y2). |
申请公布号 |
WO2014106543(A1) |
申请公布日期 |
2014.07.10 |
申请号 |
WO2013EP50112 |
申请日期 |
2013.01.04 |
申请人 |
HUAWEI TECHNOLOGIES CO., LTD.;FALLER, CHRISTOF;VIRETTE, DAVID;LANG, YUE |
发明人 |
FALLER, CHRISTOF;VIRETTE, DAVID;LANG, YUE |
分类号 |
G10L19/008 |
主分类号 |
G10L19/008 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|