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Microphone array voice enhancement method and system

A microphone array, speech enhancement technology, applied in systems for determining direction or offset, speech analysis, direction finders using ultrasonic/sonic/infrasonic waves, etc. Speech enhancement performance and other issues

Active Publication Date: 2019-07-12
XIAMEN UNIV
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Problems solved by technology

Since the frequency domain correlation between the speech signals of each channel is still used, the delay estimation accuracy will be significantly reduced in the presence of severe reverberation and other conditions, thus affecting the performance of delay compensation weighted superposition speech enhancement

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  • Microphone array voice enhancement method and system
  • Microphone array voice enhancement method and system
  • Microphone array voice enhancement method and system

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Embodiment Construction

[0040]The application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain related inventions, rather than to limit the invention. It should also be noted that, for the convenience of description, only the parts related to the related invention are shown in the drawings.

[0041] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and embodiments.

[0042] The method for microphone array speech enhancement according to an embodiment of the present invention, figure 1 A flow chart of a method for microphone array speech enhancement according to an embodiment of the present invention is shown. like figure 1 As shown, the...

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Abstract

The invention discloses a microphone array voice enhancement method and system. The microphone array voice enhancement method comprise the steps that multi-channel voice signals are collected by usinga microphone array, voice energy obtained by an energy collector is received, sound source azimuth information is acquired, a time delay compensation value of each channel of each microphone array signal is calculated by using geometric relationships of the sound source azimuth information, and beam forming processing is performed according to the time delay compensation value of each channel ofeach microphone array signal to realize the enhancement of voice information. According to the microphone array voice enhancement method and system, the signal reflection focusing characteristic of aconical structure is fully utilized to collect the voice energy in a corresponding angle range, the azimuth information can be obtained in real time, a complex azimuth estimation algorithm is not required, and the system is simple and convenient to implement.

Description

technical field [0001] The invention relates to microphone array speech signal processing, in particular to a microphone array speech enhancement method and system. Background technique [0002] With the development of multimedia technology, microphones have been widely used in classroom teaching in various schools to improve the teaching effect of teachers, especially in public courses, general education courses, lecture courses and other major courses in colleges and universities Ensure the teaching effect in a large space. However, due to the interference of reverberation and background noise, the signal received by the microphone is usually noisy speech, which will affect the intelligibility of the speech. Currently, the commonly used fixed microphones on the podium and the wireless microphones that teachers can carry with them all have this problem, so It affects the overall effect of classroom teaching, so it is necessary to enhance the noisy speech collected by the m...

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Application Information

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IPC IPC(8): G10L21/0216G01S3/802
CPCG01S3/802G10L21/0216G10L2021/02166
Inventor 王宇芳童峰黄惠详郭秋涵
Owner XIAMEN UNIV
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