Audio processing method and apparatus, device, storage medium, and computer program product

An audio processing apparatus comprising:

• at least one memory configured to store program code;
• and
• at least one processor configured to read the program code and operate as instructed by the program code, the program code comprising:
• decomposition code configured to cause at least one of the at least one processor to perform multichannel signal decomposition on an audio signal to obtain N subband signals of the audio signal, frequency bands of the N subband signals increasing sequentially and N being an integer greater than 2;
• compression code configured to cause at least one of the at least one processor to perform signal compression on each subband signal of the N subband signals to obtain a subband signal feature of each subband signal;
• and
• encoding code configured to cause at least one of the at least one processor to perform quantization encoding on the subband signal feature of each subband signal to obtain a bitstream of each subband signal.

A non-transitory computer-readable storage medium, storing computer code which, when executed by at least one processor, causes the at least one processor to at least:

• perform multichannel signal decomposition on an audio signal to obtain N subband signals of the audio signal, frequency bands of the N subband signals increasing sequentially and N being an integer greater than 2;
• perform signal compression on each subband signal of the N subband signals to obtain a subband signal feature of each subband signal;
• and
• perform quantization encoding on the subband signal feature of each subband signal to obtain a bitstream of each subband signal.