Audio encoding/decoding method and apparatus, storage medium, and computer program product

An audio decoding device, wherein the device comprises a memory and a processor;

• the memory is configured to store a computer program, wherein the computer program comprises program instructions;
• and
• the processor is configured to invoke the computer program, to implement an audio decoding method, wherein the method comprises:
• based on a to-be-decoded audio signal satisfying a first condition, obtaining a channel decoding mode, wherein the first condition comprises that the audio signal is a dual-channel signal, an encoding bit rate of the audio signal is not less than a bit rate threshold, and a sampling rate of the audio signal is not less than a sampling rate threshold;
• based on the channel decoding mode being a left-channel decoding mode, decoding a left-channel bitstream in a bitstream, to obtain left-channel data of the audio signal;
• and duplicating the left-channel data to a right channel;
• and
• based on the channel decoding mode being a right-channel decoding mode, decoding a right-channel bitstream in the bitstream, to obtain right-channel data of the audio signal;
• and duplicating the right-channel data to a left channel.