US 12,249,339 B2
Signal processing method and device
Bin Wang, Shenzhen (CN); Lei Miao, Beijing (CN); and Zexin Liu, Beijing (CN)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed by Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed on Dec. 13, 2023, as Appl. No. 18/538,381.
Application 18/538,381 is a continuation of application No. 18/157,518, filed on Jan. 20, 2023, granted, now 11,881,226.
Application 18/157,518 is a continuation of application No. 17/376,813, filed on Jul. 15, 2021, granted, now 11,580,996, issued on Feb. 14, 2023.
Application 17/376,813 is a continuation of application No. 16/725,678, filed on Dec. 23, 2019, granted, now 11,081,121, issued on Aug. 3, 2021.
Application 16/725,678 is a continuation of application No. 16/409,290, filed on May 10, 2019, granted, now 10,546,591, issued on Jan. 28, 2020.
Application 16/409,290 is a continuation of application No. 16/205,246, filed on Nov. 30, 2018, granted, now 10,347,264, issued on Jul. 9, 2019.
Application 16/205,246 is a continuation of application No. 15/686,175, filed on Aug. 25, 2017, granted, now 10,186,271, issued on Jan. 22, 2019.
Application 15/686,175 is a continuation of application No. 15/335,449, filed on Oct. 27, 2016, granted, now 9,837,088, issued on Dec. 5, 2017.
Application 15/335,449 is a continuation of application No. PCT/CN2014/092695, filed on Dec. 1, 2014.
Claims priority of application No. 201410177234.3 (CN), filed on Apr. 29, 2014.
Prior Publication US 2024/0185867 A1, Jun. 6, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. G10L 19/02 (2013.01); G10L 19/002 (2013.01)
CPC G10L 19/0204 (2013.01) [G10L 19/002 (2013.01); G10L 19/02 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An audio signal or a speech signal processing method, comprising: obtaining spectral coefficients of a current frame of an audio or a speech signal, wherein a first frequency band of M sub-bands in N sub-bands of the spectral coefficients is lower than a second frequency band of K sub-bands in the N sub-bands except the M sub-bands, wherein N is an integer greater than 1, wherein M and K are positive integers, and wherein a sum of M and K is N;
determining a ratio of a first total energy of the M sub-bands to a second total energy of the K sub-bands as an energy characteristic of the M sub-bands;
obtaining a modification operation on first quantized envelope values of the M sub-bands when the energy characteristic falls within a first range and a spectral characteristic of the M sub-bands falls within a second range, wherein the spectral characteristic indicates a degree of spectral fluctuation of the M sub-bands and is based on the first quantized envelope values;
performing modification on the first quantized envelope values according to a modification factor to acquire modified envelope values of the M sub-bands, wherein the modification factor is based on the first total energy of the M sub-bands and a third energy of a first sub-band that is a largest energy among the M sub-bands; and
performing a first bit allocation on the N sub-bands according to the modified envelope values and second quantized envelope values of the K sub-bands.