US 12,469,503 B2
Method for determining audio coding/decoding mode and related product
Bin Wang, Shenzhen (CN); Haiting Li, Beijing (CN); and Lei Miao, Beijing (CN)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed by HUAWEI TECHNOLOGIES CO., LTD., Guangdong (CN)
Filed on Feb. 13, 2024, as Appl. No. 18/440,210.
Application 18/440,210 is a continuation of application No. 17/400,289, filed on Aug. 12, 2021, granted, now 11,935,547.
Application 17/400,289 is a continuation of application No. 16/785,274, filed on Feb. 7, 2020, granted, now 11,120,807, issued on Sep. 14, 2021.
Application 16/785,274 is a continuation of application No. PCT/CN2018/100100, filed on Aug. 10, 2018.
Claims priority of application No. 201710679081.6 (CN), filed on Aug. 10, 2017.
Prior Publication US 2024/0282318 A1, Aug. 22, 2024
Int. Cl. G10L 19/008 (2013.01); G10L 19/22 (2013.01)
CPC G10L 19/008 (2013.01) [G10L 19/22 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method for determining a channel combination scheme, comprising:
obtaining a first signal type of a current frame of an audio signal, wherein the first signal type is either a near in phase signal or a near out of phase signal, and wherein the current frame includes a left channel signal and a right channel signal;
obtaining a previous channel combination scheme of a first previous frame of the audio signal, wherein the previous channel combination scheme is either an anticorrelated signal channel combination scheme corresponding to the near out of phase signal or a correlated signal channel combination scheme corresponding to the near in phase signal;
obtaining a first signal-to-noise ratio of the left channel signal and a second signal-to-noise ratio of the right channel signal;
determining whether the first signal-to-noise ratio is greater than a preset threshold;
determining whether the second signal-to-noise ratio is greater than the preset threshold; and
in response to determining that the first signal type of the current frame is the near in phase signal, the previous channel combination scheme is the anticorrelated signal channel combination scheme, and both the first signal-to-noise ratio and the second signal-to-noise ratio are less than the preset threshold, determining that an initial channel combination scheme of the current frame is the correlated signal channel combination scheme.