A packet loss compensation method and system based on delay jitter

A technology of delay jitter and compensation method, applied in the field of data communication, can solve the problems of increasing delay, voice communication sound delay, etc., and achieve the effect of subtracting delay

Active Publication Date: 2019-09-20
MORNINGCORE HLDG CO LTD +1
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  • Claims
  • Application Information

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Problems solved by technology

However, because the interpolation method requires a certain amount of data to be cached, it will cause a delay in voice communication, and the delay is related to the maximum number of frames that can be interpolated. As the number of interpolation frames increases, the delay will further increase

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  • A packet loss compensation method and system based on delay jitter
  • A packet loss compensation method and system based on delay jitter
  • A packet loss compensation method and system based on delay jitter

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Embodiment Construction

[0047]In order to make the object, technical solution and advantages of the present invention clearer, various embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. However, those of ordinary skill in the art can understand that, in each implementation manner of the present invention, many technical details are provided for readers to better understand the present application. However, even without these technical details and various changes and modifications based on the following implementation modes, the technical solution claimed in each claim of the present application can be realized.

[0048] Such as figure 1 As shown, the first embodiment of the present invention relates to a packet loss compensation method based on delay jitter, and its specific process is as follows figure 1 shown.

[0049] In step 101, the receiving end judges whether there is frame loss in the received voice data. If there is no fra...

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Abstract

The invention relates to the field of data communication, and discloses a packet loss compensation method and system based on delay jitter. Compared with the prior art, the embodiment of the present invention first judges whether there is a frame loss in the received voice data, and sends a frame loss indication when the frame is lost; then, according to the frame loss indication, fills in N frames of redundant frames increase the buffer delay, so as to obtain the voice data cached after frame loss; then, perform frame loss compensation according to the voice data cached before frame loss and the voice data cached after frame loss, so that the restored voice can be compensated More accurate; finally, the receiving end discards N frames of non-speech frames in the cache, thereby subtracting the delay added in the cache to achieve the effect of delay recovery, where N is a natural number.

Description

technical field [0001] The invention relates to the field of data communication, in particular to a delay jitter-based packet loss compensation method and system. Background technique [0002] A packet loss compensation (Packet Loss Concealment, "PLC") algorithm is also called a frame error concealment (Frame Erasure Concealment, "FEC") algorithm. In voice communication, due to network quality problems, voice data may be lost, and large pieces of voice stream data may disappear. At this time, it will cause the auditory effect that the speech stops abruptly, resulting in discontinuity of speech. If the lost voice data can be estimated at this time to compensate for the lost data, then the loss of voice quality due to voice loss can be eliminated. This is also the basic function of the PLC, which is to estimate the missing speech signal and fill in the missing part of the speech stream. [0003] Packet loss compensation is mainly used in the audio system that encodes and pa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G10L19/005H04L12/885H04L49/9023
Inventor 许云峰
Owner MORNINGCORE HLDG CO LTD
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