19013976. AUDIO SIGNAL PROCESSING METHOD AND APPARATUS (Huawei Technologies Co., Ltd.)
AUDIO SIGNAL PROCESSING METHOD AND APPARATUS
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AUDIO SIGNAL PROCESSING METHOD AND APPARATUS
This abstract first appeared for US patent application 19013976 titled 'AUDIO SIGNAL PROCESSING METHOD AND APPARATUS
Original Abstract Submitted
This application discloses an audio signal processing method and apparatus, and belongs to the field of audio signal processing technologies. The method includes: obtaining a plurality of sub-bands of an audio signal and a scale factor of each sub-band; determining, based on the scale factors of the plurality of sub-bands, a reference value used for shaping a spectral envelope of the audio signal; and shaping the spectral envelope of the audio signal by using the reference value as a baseline, to obtain an adjustment factor of each sub-band corresponding to a shaped spectral envelope. The adjustment factor is used to quantize a spectral value of the audio signal, and/or the adjustment factor is used to dequantize a code value of the spectral value. In this application, compression efficiency of encoding an audio signal is improved while sound quality is ensured.