Audio frame loss recovery method and apparatus

An audio encoding method, applied to an audio encoding device, and comprising:

• encoding an audio signal to generate a plurality of audio frames;
• selecting at least one first audio frame in the plurality of audio frames;
• generating at least one redundant frame by using data of a plurality of second audio frames in the plurality of audio frames, each of the plurality of second audio frames being an audio frame among the plurality of audio frames other than the at least one first audio frame;
• and
• sending the plurality of audio frames and the at least one redundant frame to a decoding device.

An audio frame loss recovery apparatus, comprising a memory for storing instruction and a processor in communication with the memory, wherein the processor, when executing the instructions, is configured to:

• receive a plurality of audio frames and at least one redundant frame, wherein the plurality of audio frames comprise at least one first audio frame and a plurality of second audio frames, and the redundant frame comprises data extracted from the plurality of second audio frames and without data from the at least one first audio frame;
• detect a lost audio frame;
• determine whether the redundant frame includes data from the lost audio frame;
• obtain, when the redundant frame includes data of the lost audio frame, the data of the lost audio frame from the redundant frame, and recover the lost audio frame based on the data of the lost audio frame contained in the redundant frame;
• and
• obtain, when the plurality of audio frames and the redundant frame comprise data of at least one neighboring audio frame of the lost audio frame, the data of the at least one neighboring audio frame of the lost audio frame from the plurality of audio frames and the redundant frame, and recover the lost audio frame based on the data of the at least one neighboring audio frame.

An audio encoding apparatus, comprising a memory for storing instruction and a processor in communication with the memory, wherein the processer, when executing the instructions, is configured to:

• encode an audio signal to generate a plurality of audio frames;
• select at least one first audio frame in the plurality of audio frames;
• generate at least one redundant frame by using data of a plurality of second audio frames in the plurality of audio frames, each of the plurality of second audio frames being an audio frame among the plurality of audio frames other than the at least one first audio frame;
• and
• send the plurality of audio frames and the at least one redundant frame to a decoding device.