Audio data coding method and apparatus, and audio data decoding method and apparatus

An electronic device comprising:

• a memory and a processor, wherein the memory is used for storing a computer program;
• the processor is used to, when executing the computer program, cause the electronic device to implement:
• determining a coding mode of a first audio frame;
• judging whether the coding mode of the first audio frame is a same coding mode as a coding mode of a second audio frame;
• wherein the second audio frame is a previous audio frame of the first audio frame;
• in response to that the coding mode of the first audio frame is different from a coding mode of a second audio frame and the coding mode of the first audio frame is multiple description coding, generating third data based on first data, second data and a first delay;
• the first data is low-frequency data obtained by frequency division of original audio data of the first audio frame, the second data is low-frequency data obtained by frequency division of original audio data of the second audio frame, and the first delay is a coding delay of the multiple description coding;
• and
• performing the multiple description coding on the third data to obtain encoded data of the first audio frame.

A non-transitory computer-readable storage medium having a computer program stored thereon, the computer program, when executed by a computing device, causes the computing device to implement:

• determining a coding mode of a first audio frame;
• judging whether the coding mode of the first audio frame is a same coding mode as a coding mode of a second audio frame;
• wherein the second audio frame is a previous audio frame of the first audio frame;
• in response to that the coding mode of the first audio frame is different from a coding mode of a second audio frame and the coding mode of the first audio frame is multiple description coding, generating third data based on first data, second data and a first delay;
• the first data is low-frequency data obtained by frequency division of original audio data of the first audio frame, the second data is low-frequency data obtained by frequency division of original audio data of the second audio frame, and the first delay is a coding delay of the multiple description coding;
• and
• performing the multiple description coding on the third data to obtain encoded data of the first audio frame.