Title:
AUDIO SIGNAL PROCESSING METHOD AND APPARATUS
Document Type and Number:
WIPO Patent Application WO/2024/021730
Kind Code:
A1
Abstract:
The present application discloses an audio signal processing method and an apparatus, and belongs to the technical field of audio signal processing. The method comprises: acquiring a plurality of subbands of an audio signal, and a scale factor of each subband; based on the scale factors of the plurality of subbands, determining a reference value for shaping a frequency spectrum envelope of the audio signal; using the reference value as a baseline, shaping the frequency spectrum envelope of the audio signal, and obtaining an adjustment factor for each subband corresponding to the shaped frequency spectrum envelope, the adjustment factor being used for the quantization of a frequency spectrum value of the audio signal, and/or the adjustment factor being used for the dequantization of a code value of the frequency spectrum value. The present application ensures sound quality while enhancing the compression efficiency of encoding an audio signal.
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Inventors:
WANG ZHUO (CN)
FENG BIN (CN)
DU CHUNHUI (CN)
FAN FAN (CN)
FENG BIN (CN)
DU CHUNHUI (CN)
FAN FAN (CN)
Application Number:
PCT/CN2023/092045
Publication Date:
February 01, 2024
Filing Date:
May 04, 2023
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
G10L19/00; G10L19/02; G10L19/032
Foreign References:
| CN102081926A | 2011-06-01 | |||
| CN113140225A | 2021-07-20 | |||
| CN101958120A | 2011-01-26 | |||
| US20070238415A1 | 2007-10-11 | |||
| US20110282674A1 | 2011-11-17 |
Attorney, Agent or Firm:
BEIJING SAN GAO YONG XIN INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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