Voice signal processing method and device

A voice signal processing, near-end signal technology, applied in the field of communication, to achieve the effect of low complexity

Active Publication Date: 2019-09-03
SHANGHAI FULLHAN MICROELECTRONICS
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  • Claims
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Problems solved by technology

[0006] In order to overcome the deficiencies in the above-mentioned prior art, the purpose of the present invention is to provide a voice signal processing method and device, to be able to suppress the echo, residual echo, howling and noise in the full-duplex conversation, and to achieve a relatively low The complexity solves problems such as echo, howling and noise in voice intercom

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Embodiment Construction

[0045] The implementation of the present invention is described below through specific examples and in conjunction with the accompanying drawings, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific examples, and various modifications and changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.

[0046] figure 2 It is a flow chart of the steps of a voice signal processing method of the present invention. Such as figure 2 Shown, a kind of speech signal processing method of the present invention comprises the following steps:

[0047] Step 201: Receive and decode the far-end signal and store it in the buffer, and collect the near-end signal while playing the decoded far-end signal...

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Abstract

The invention discloses a voice signal processing method and device, and the method comprises the following steps: step 1, receiving a decoded far-end signal, and collecting a near-end signal while playing the decoded far-end signal; step 2, estimating and compensating the delay, and performing data alignment operation on the far-end signal and the near-end signal; step 3, sending the aligned far-end and near-end signals into an adaptive echo suppression unit with feedback, and suppressing echoes in the near-end signals; step 4, inhibiting residual echoes and howling in the near-end signal; step 5, suppressing the noise in the near-end signal; and step 6, transmitting the near-end signal through the network. Through the method and the device, the echo, the residual echo, the howling and the noise in the full-duplex call can be suppressed. The problems of echo, howling, noise and the like in the voice talkback can be solved with relatively low complexity.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a voice signal processing method and device suitable for full-duplex communication. Background technique [0002] Full-duplex voice two-way intercom is not only common in traditional applications such as hands-free calls and conference all-in-one machines. Video doorbell etc. [0003] At present, the above application scenarios are generally as follows figure 1 As shown, among them, the terminal device receives the remote voice signal through the Internet, after being decoded by the audio decoder unit, it is converted into an analog signal by a digital-to-analog converter, and finally played by the speaker. At the same time, the microphone of the terminal device collects the local voice signal and passes through the analog -The digital converter converts the digital signal into a digital signal, and after being processed by the local voice signal processor unit (echo elim...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L21/0208G10L21/0216
CPCG10L21/0208G10L21/0216G10L2021/02082
Inventor 董鹏宇刘文庭金永明陈城樊满尹东
Owner SHANGHAI FULLHAN MICROELECTRONICS
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