A kind of voice signal processing method and device

A technology of voice signal processing and near-end signal, applied in the field of communication

CN110197669BActive Publication Date: 2021-09-10SHANGHAI FULLHAN MICROELECTRONICS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2021-09-10

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Abstract

The invention discloses a voice signal processing method and device. The method includes 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 Compensate the delay and perform data alignment operation on the far-end and near-end signals; Step 3, send the aligned far-end and near-end signals to the adaptive echo suppression unit with feedback to suppress the echo in the near-end signals; Step 4, Suppressing the residual echo and howling in the near-end signal; step five, suppressing the noise in the near-end signal; step six, transmitting the near-end signal through the network, through the present invention, the echo, residual Echo, howling, and noise can be suppressed, and problems such as echo, howling, and noise in voice intercom can be solved with relatively low complexity.
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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...

Examples

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...