US 11,750,995 B2
Method and apparatus for processing a stereo signal
Liyun Pang, Munich (DE); Fons Adriaensen, Munich (DE); Song Li, Hannover (DE); and Roman Schlieper, Hannover (DE)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Guangdong (CN)
Filed by HUAWEI TECHNOLOGIES CO., LTD., Guangdong (CN)
Filed on Jul. 23, 2021, as Appl. No. 17/384,124.
Application 17/384,124 is a continuation of application No. PCT/EP2019/051917, filed on Jan. 25, 2019.
Prior Publication US 2021/0352425 A1, Nov. 11, 2021
Int. Cl. H04S 3/00 (2006.01); H04S 7/00 (2006.01)
CPC H04S 3/004 (2013.01) [H04S 7/30 (2013.01); H04S 2400/05 (2013.01); H04S 2420/01 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A method for processing a stereo signal, the method comprising:
obtaining a center channel signal by up-mixing the stereo signal;
generating a filtered center channel signal by applying one or more peak filters and one or more notch filters to the center channel signal;
generating a binaural signal based on the filtered center channel signal;
obtaining a left channel signal and a right channel signal by up-mixing the stereo signal:
convolving the stereo signal with a local reverberation to obtain a convolved stereo signal;
processing the left channel signal and the right channel signal according to two pairs of head related transfer functions to obtain a processed left channel signal and a processed right channel signal;
processing the filtered center channel signal according to a pair of head related transfer functions, to obtain a processed center channel signal;
generating a left signal of the binaural signal based on the processed left channel signal, the convolved stereo signal and the processed center channel signal; and
generating a right signal of the binaural signal according to the processed right channel signal, the convolved stereo signal and the processed center channel signal.