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Frame loss compensation processing method and device

A processing method and frame loss technology, applied in the field of communication, can solve problems such as inaccurate parameter estimation of lost frames and inability to guarantee the quality of decoded audio, etc.

Active Publication Date: 2017-10-13
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Due to the inaccurate estimation of the parameters of the lost frames by the above method, the decoded audio quality cannot be guaranteed

Method used

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  • Frame loss compensation processing method and device
  • Frame loss compensation processing method and device

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Embodiment Construction

[0115] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0116] figure 1 It is a flow chart of the frame loss compensation processing method provided by Embodiment 1 of the present invention, as shown in figure 1 As shown, the method of this embodiment may include the following steps:

[0117] Step 101. Determine whether the i-th frame is a lost frame by using the lost frame flag bit.

[0118] The fr...

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Abstract

The embodiments of the invention provide a frame loss compensation processing method and a device. The method includes the following steps: determining whether an ith frame is a lost frame through a lost frame marker bit; and if the ith frame is a lost frame, estimating the spectrum frequency parameter, the pitch period and the gain of the ith frame according to at least one of the inter-frame relationship and the intra-frame relationship of N frames before the ith frame, wherein the inter-frame relationship of the N frames includes at least one of the correlation and the energy stability of the N frames, and the intra-frame relationship of the N frames includes at least one of the correlation and the energy stability of the N frames. The parameters of the ith frame are determined according to the signal correlation and the energy stability of the N frames and the correlation and the energy stability of signals in each frame. As the relationship between signals is considered, the estimated parameters of the ith frame are more accurate. Therefore, the quality of decoded speech signals is enhanced.

Description

technical field [0001] Embodiments of the present invention relate to communication technologies, and in particular to a frame loss compensation processing method and device. Background technique [0002] In voice services, for weak coverage scenarios, interference scenarios, and high-speed mobile scenarios, problems such as voice packet loss and error packets often occur, which inevitably cause users to have poor experience such as intermittent or noise. [0003] An existing method for frame loss compensation is as follows: analyze the code stream at the decoding end to determine whether the current frame is a frame loss, if the current frame is a frame loss, then estimate the parameters of the current frame loss, and according to the parameters of the current frame loss The spectral frequency parameters and the excitation signal of the lost frame signal are restored by using the parameters of the historical frame, and then the lost frame signal is obtained according to the...

Claims

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Application Information

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IPC IPC(8): G10L19/005G10L19/02G10L21/02G10L21/0216
CPCG10L19/005G10L19/02G10L21/02G10L21/0216G10L19/09G10L19/083G10L19/107H04L43/08G10L19/0208G10L19/06G10L19/087G10L25/06G10L25/78G10L2019/0002G10L2019/0008G10L2019/0016G10L2025/783
Inventor 刘泽新张兴涛王宾苗磊
Owner HUAWEI TECH CO LTD
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