US 11,756,557 B2
Method for encoding multi-channel signal and encoder
Halting Li, Beijing (CN); Zexin Liu, Beijing (CN); Xingtao Zhang, Shenzhen (CN); and Lei Miao, Beijing (CN)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed by Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed on Nov. 29, 2021, as Appl. No. 17/536,932.
Application 17/536,932 is a continuation of application No. 16/818,612, filed on Mar. 13, 2020, granted, now 11,217,257.
Application 16/818,612 is a continuation of application No. 16/272,394, filed on Feb. 11, 2019, granted, now 10,643,625.
Application 16/272,394 is a continuation of application No. PCT/CN2017/074425, filed on Feb. 22, 2017.
Claims priority of application No. 201610652507.4 (CN), filed on Aug. 10, 2016.
Prior Publication US 2022/0084531 A1, Mar. 17, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. G10L 19/008 (2013.01); H04S 3/00 (2006.01)
CPC G10L 19/008 (2013.01) [H04S 3/00 (2013.01); H04S 2420/03 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for encoding an audio signal, the method comprising:
obtaining an initial inter-channel time difference (ITD) value of a current frame of an audio signal, wherein the audio signal comprises a first channel signal and a second channel signal, and wherein the initial ITD value is related to the first channel signal and the second channel signal;
obtaining a characteristic parameter of the current frame, wherein the characteristic parameter comprises at least one of a signal-to-noise ratio of the current frame or a peak feature of cross correlation coefficients of the current frame;
determining, based on the characteristic parameter, whether to use the initial ITD value as a finalized ITD value of the current frame;
encoding the current frame based on the initial ITD value when determining to use the initial ITD value as the finalized ITD value of the current frame; and
encoding the current frame based on a finalized ITD value of a previous frame of the current frame when determining not to use the initial ITD value as the finalized ITD value of the current frame.