Method and device for speech enhancement based on microphone array

A microphone array and voice enhancement technology, which is applied in voice analysis, telephone structure, instruments, etc., to achieve the effect of reducing the amount of calculation, suppressing echo and reverberation signals, and improving the experience of voice enhancement

Active Publication Date: 2020-07-21
重庆瑞可利科技有限公司
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AI Technical Summary

Problems solved by technology

[0009] In order to solve the existing problems in the existing microphone array-based voice processing methods, the present invention aims to provide a voice enhancement experience with good effect; it can achieve real-time processing for current mainstream hardware platforms, and Speech enhancement method based on microphone array with strong robustness

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  • Method and device for speech enhancement based on microphone array
  • Method and device for speech enhancement based on microphone array
  • Method and device for speech enhancement based on microphone array

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Embodiment Construction

[0046] The present invention will further describe in detail the technical solutions claimed in this application in conjunction with the accompanying drawings and specific implementation methods.

[0047]The technical solution claimed by the present invention includes a microphone array-based voice enhancement method and a microphone array-based voice enhancement device, the method and device are used to enhance the voice signal / audio signal light signal and improve its The signal-to-noise ratio of the output achieves a better enhancement effect of the voice / audio signal, making the voice / audio signal clearer and easier for the receiver to listen to.

[0048] combine image 3 , Figure 4 and Figure 5 , the specific steps of the microphone array-based speech enhancement method claimed in the present invention are as follows:

[0049] Step 1: Process the following two signals separately:

[0050] 1) The digital signal is divided into one frame of 20ms, and the sampling rate...

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Abstract

The invention discloses a low-computation voice enhancement device based on a microphone array. The device estimates reverberation and an acoustic path of the echo more accurately, suppresses echo andreverberation signals better, enables an output audio signal to reach a higher signal-to-noise ratio, is good in voice enhancement experience effect, can achieve real-time processing for a current mainstream hardware platform, and is very high in robustness. In addition, the device provided by the invention can greatly reduce the operand of signal processing while improving the signal-to-noise ratio of the signal. Under the requirement of realizing the same signal-to-noise ratio, the traditional signal processing flow needs 1-3 times of calculation amount.

Description

technical field [0001] The invention relates to a voice enhancement method and device, in particular to a microphone array-based voice enhancement device. Background technique [0002] In modern communication application scenarios, people start to use more hands-free devices for calls and exchanges, such as speaker systems, video conferencing systems, laptops and tablets. In these systems, the loudspeaker is usually located in an enclosed room relatively close to the microphone. This application scenario leads to acoustic signal processing challenges that do not exist in typical non-hands-free devices, and also greatly reduces the signal-to-noise ratio (SNR) of the call as the distance between the speaker and microphone increases. [0003] In addition, in real life, in voice communication applications, there are reverberation signals and echoes in the voice signal, and the reverberation signal is very necessary in some cases, but even so the reverberation signal will have i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G10L21/0208G10L21/0216G10L21/0232H04M1/19
CPCG10L21/0208G10L21/0216G10L21/0232G10L2021/02082G10L2021/02166
Inventor 刘睿
Owner 重庆瑞可利科技有限公司
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