Method and apparatus for decoding speech/audio bitstream
First Claim
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1. A method for decoding an audio bitstream, comprising:
- 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.
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Abstract
A method and an apparatus for decoding a speech/audio bitstream are disclosed, where the method for decoding a speech/audio bitstream includes determining whether a current frame is a normal decoding frame or a redundancy decoding frame, obtaining a decoded parameter of the current frame by means of parsing when the current frame is a normal decoding frame or a redundancy decoding frame, performing post-processing on the decoded parameter of the current frame to obtain a post-processed decoded parameter of the current frame, and using the post-processed decoded parameter of the current frame to reconstruct a speech/audio signal.
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Citations
20 Claims
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1. A method for decoding an audio bitstream, comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 19)
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7. A decoder for decoding an audio bitstream, comprising:
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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. - View Dependent Claims (8, 9, 10, 11, 12, 13, 20)
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14. A non-transitory computer readable medium including instructions, which, when executed by a processor, will cause the processor to perform the steps of:
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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. - View Dependent Claims (15, 16, 17, 18)
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Specification