US 12,462,816 B2
Audio encoding method and coding device
Bingyin Xia, Beijing (CN); Jiawei Li, Beijing (CN); and Zhe Wang, Beijing (CN)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed by HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed on Dec. 27, 2022, as Appl. No. 18/146,616.
Application 18/146,616 is a continuation of application No. PCT/CN2021/104087, filed on Jul. 1, 2021.
Claims priority of application No. 202010632030.X (CN), filed on Jul. 3, 2020.
Prior Publication US 2023/0138871 A1, May 4, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. G10L 19/008 (2013.01); G10L 19/02 (2013.01); G10L 21/038 (2013.01)
CPC G10L 19/008 (2013.01) [G10L 19/02 (2013.01)] 21 Claims
OG exemplary drawing
 
1. An audio encoding method, comprising:
obtaining a current frame of an audio signal, wherein the current frame of the audio signal comprises a high frequency band signal and a low frequency band signal;
performing first encoding based on the high frequency band signal and the low frequency band signal, to obtain a first encoding parameter of the current frame of the audio signal, wherein the first encoding comprises bandwidth extension encoding;
performing second encoding based on the high frequency band signal to obtain a second encoding parameter of the current frame, wherein the second encoding parameter indicates information about a tonal component of the high frequency band signal;
obtaining the high frequency band signal through bandwidth extension processing;
obtaining a spectrum of the high frequency band signal in the bandwidth extension encoding;
adjusting, based on the information about the tonal component of the high frequency band signal, the spectrum of the high frequency band signal, to obtain an adjusted spectrum of the high frequency band signal;
performing third encoding based on the adjusted spectrum of the high frequency band signal to obtain a third encoding parameter; and
performing bitstream multiplexing on the first encoding parameter, the second encoding parameter, and the third encoding parameter to obtain an encoded bitstream of the current frame of the audio signal.