Systems and methods for reconstructing an erased speech frame
AssigneeQUALCOMM Incorporated
InventorsZheng Fang, Daniel J. Sinder, Ananthapadmanabhan A. Kandhadai
Life of this patent
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Abstract
A method for reconstructing an erased speech frame is described. A second speech frame is received from a buffer. The index position of the second speech frame is greater than the index position of the erased speech frame. The type of packet loss concealment (PLC) method to use is determined based on one or both of the second speech frame and a third speech frame. The index position of the third speech frame is less than the index position of the erased speech frame. The erased speech frame is reconstructed from one or both of the second speech frame and the third speech frame.
Claims34
A method for reconstructing an erased speech frame by a wireless device, comprising:
- receiving a second speech frame from a buffer, wherein an index position of the second speech frame is greater than an index position of the erased speech frame;
- determining which type of packet loss concealment (PLC) method to use based on one or both of the second speech frame and a third speech frame, wherein an index position of the third speech frame is less than the index position of the erased speech frame;
- and
- reconstructing the erased speech frame from one or both of the second speech frame and the third speech frame.
A wireless device for reconstructing an erased speech frame, comprising:
- a buffer configured to receive a sequence of speech frames;
- and
- a voice decoder configured to decode the sequence of speech frames, wherein the voice decoder comprises:
- a frame erasure concealment module configured to reconstruct the erased speech frame from one or more frames that are of one of the following types:
- subsequent frames and previous frames, wherein the subsequent frames comprise an index position greater than the index position of the erased speech frame in the buffer and the previous frames comprise an index position less than the index position of the erased speech frame in the buffer.
An apparatus for reconstructing an erased speech frame, comprising:
- means for receiving a second speech frame from a buffer, wherein an index position of the second speech frame is greater than an index position of the erased speech frame;
- means for determining which type of packet loss concealment (PLC) method to use based on one or both of the second speech frame and a third speech frame, wherein an index position of the third speech frame is less than the index position of the erased speech frame;
- and
- means for reconstructing the erased speech frame from one or both of the second speech frame and the third speech frame.
A computer-program product for reconstructing an erased speech frame, the computer-program product comprising a non-transitory computer readable medium having instructions thereon, the instructions comprising:
- code for causing a wireless device to receive a second speech frame from a buffer, wherein an index position of the second speech frame is greater than an index position of the erased speech frame;
- code for causing the wireless device to determine which type of packet loss concealment (PLC) method to use based on one or both of the second speech frame and a third speech frame, wherein an index position of the third speech frame is less than the index position of the erased speech frame;
- and
- code for causing the wireless device to reconstruct the erased speech frame from one or both of the second speech frame and the third speech frame.
Dependencies are inferred from the claim text.