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Dual-microphone-based speech enhancement device and method

A voice enhancement and dual-microphone technology, applied in voice analysis, microphone mouth/microphone accessories, instruments, etc., can solve problems such as voice distortion and limited noise reduction effect

Inactive Publication Date: 2011-02-16
AAC ACOUSTIC TECH (SHENZHEN) CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional single-channel speech enhancement method has limited noise reduction effect and will cause large distortion to the speech

Method used

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  • Dual-microphone-based speech enhancement device and method
  • Dual-microphone-based speech enhancement device and method
  • Dual-microphone-based speech enhancement device and method

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Embodiment Construction

[0076] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0077] see Figure 1-3 , the double-microphone-based speech enhancement device provided by the present invention, the device includes

[0078] The microphone array module includes a first microphone and a second microphone for receiving time-domain noisy speech signals and outputting the received time-domain noisy speech signals, and the first microphone and the second microphone receive the time-domain noisy speech signals Respectively x1, x2;

[0079] The fixed beamformer is used to receive the time-domain noisy speech signal output by the microphone array module, and superimpose the speech part of the received time-domain noisy speech signal, and increase the time-domain noisy speech signal to form a preliminary The enhanced speech signal is then output;

[0080] A blocking matrix module, configured to receive the time-domain noisy speech signal o...

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Abstract

The invention relates to a dual-microphone-based speech enhancement device and method. The device comprises a microphone array module and a fixed beam former, the microphone array module comprises a first microphone and a second microphone which are used for receiving time-domain noisy speech signals and outputting received time-domain noisy speech signals, wherein the time-domain noisy speech signals received by the first microphone and the second microphone are respectively x1 and x2; and the fixed beam former is used for receiving the time-domain noisy speech signals output by the microphone array module and overlying the speech part of the received time-domain noisy speech signals to amplify the time-domain noisy speech signals so as to form initially enhanced speech signals, and then outputting the signals. The device and the method have good denoising effect.

Description

technical field [0001] The invention relates to a dual-microphone-based speech enhancement device and method. Background technique [0002] With the development of wireless communication, there are more and more mobile phone users around the world. The requirements of users for mobile phones are not only satisfied with calls, but also to be able to provide high-quality call effects. Especially the current development of mobile multimedia technology, the mobile phone Call quality is even more important. [0003] Due to the existence of a large amount of environmental noise, the signal-to-noise ratio of the voice signals collected by the microphones of mobile phones and other communication devices is generally not high enough. Especially in high-noise environments such as street cars, it is necessary to increase the volume to make the other party hear clearly. Therefore, it is necessary to improve the signal-to-noise ratio of the input voice and improve the communication qual...

Claims

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Application Information

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IPC IPC(8): G10L21/02H04R1/08G10L21/0224
Inventor 叶利剑
Owner AAC ACOUSTIC TECH (SHENZHEN) CO LTD
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