Method and apparatus for decoding speech/audio bitstream

A decoder for decoding an audio bitstream, comprising:

• a processor;
• and
• a memory coupled to the processor,
• wherein the processor is configured to:
• perform decoding operations on an audio bitstream comprising a first frame and a second frame, wherein a decoded parameter of the first frame and a decoded parameter of the second frame are acquired via the decoding operations, and wherein the second frame is a previous frame of the first frame;
• perform, according to the decoded parameter of the first frame and the decoded parameter of the second frame, post-processing on the decoded parameter of the first frame to obtain a post-processed decoded parameter of the first frame when at least one of the first frame or the second frame is a redundancy decoding frame;
• and
• reconstruct an audio signal using the post-processed decoded parameter of the first frame.

A non-transitory computer readable medium including instructions, which, when executed by a processor, will cause the processor to perform the steps of:

• performing decoding operations on an audio bitstream comprising a first frame and a second frame, wherein a decoded parameter of the first frame and a decoded parameter of the second frame are acquired via the decoding operations, and wherein the second frame is a previous frame of the first frame;
• performing, according to the decoded parameter of the first frame and the decoded parameter of the second frame, post-processing on the decoded parameter of the first frame to obtain a post-processed decoded parameter of the first frame when at least one of the first frame or the second frame is a redundancy decoding frame;
• and
• reconstructing an audio signal using the post-processed decoded parameter of the first frame.