QUANTIZATION METHOD, DEQUANTIZATION METHOD, AND APPARATUS THEREOF

Abstract: a quantization method is disclosed. the method includes obtaining a psychoacoustic spectrum envelope coefficient of each sub-band based on a scale factor of each sub-band and a target bit depth for encoding an audio signal, determining, based on the psychoacoustic spectrum envelope coefficient of the sub-band, a target spectrum value that needs to be quantized in the sub-band, where a first total quantity of bits consumed by the target spectrum value in an encoded frame is less than or equal to a quantity of available bits of each frame of signal, and the quantity of available bits is determined based on a target bit rate that can be used by an encoder side to transmit the audio signal to a decoder side, and obtaining a quantized value of the target spectrum value based on the target spectrum value.

Inventor(s): Zhuo Wang, Bin Feng, Chunhui Du, Fan Fan

CPC Classification: G10L19/032 (SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING)

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