Target voice enhancement device and method

A target speech and audio signal technology, applied in speech analysis, instruments, etc., can solve the problems of high auditory perception evaluation score, low target speech distortion, low computational complexity, etc., to achieve strong practicability and reliability, and suppress interference The effect of low voice and algorithm complexity

Active Publication Date: 2017-09-29
SHENZHEN HIAN SPEECH SCI & TECH CO LTD
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AI Technical Summary

Problems solved by technology

[0015] The purpose of the present invention is to overcome the disadvantages and deficiencies of the single-channel speech enhancement method, which cannot suppress spatial interference noise due to the inability to utilize the spatial orientation information of the sound source, and the speech enhancement method of the traditional microphone array is limited by the large volume of the array, complex calculation and difficult portable devices,...

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  • Target voice enhancement device and method
  • Target voice enhancement device and method
  • Target voice enhancement device and method

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Embodiment Construction

[0051] The present invention will be described in further detail below in conjunction with the embodiments and the accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0052] Such as figure 1 Shown is a schematic structural diagram of a device for enhancing target speech in the present invention, the device includes an acoustic vector sensor for collecting audio signals, and a high-order spatial matching beamformer for further narrowing the target beam of the spatial matching beamformer , for automatically tracking or locating the interference sound source in the non-target direction, and adjusting the high-order spatial matching beamformer to form a null filter in the main interference direction and a post-position filter for filtering residual noise Wiener filter. The acoustic vector sensor performs beam processing on the collected audio signal through sequentially connected high-order space matching beamformer, null filter and post...

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Abstract

The invention relates to a target voice enhancement device. The device comprises an acoustic vector sensor used for acquiring an audio signal, a high-order space matching wave beam former, a nulling filter and a back Wiener filter, wherein wave beam processing on the audio signal acquired by the acoustic vector sensor is carried out through the high-order space matching wave beam former, the nulling filter and the back Wiener filter which are sequentially connected, and enhancement of a target direction voice is realized. The invention further provides a target voice enhancement method. According to the method, the sound source orientation information can be effectively utilized to inhibit a space interference source and background noise, the target direction voice can be enhanced, distortion of the target voice after enhancement is small, and a hearing perception evaluation score is relatively high. The device is advantaged in that the device has relatively low calculation complexity and has application and popularization values on micro equipment.

Description

technical field [0001] The present invention relates to the technical field of speech signal processing, in particular to a device and method for enhancing target speech based on high-order beamforming technology of an acoustic vector sensor. Background technique [0002] In the actual environment, when the microphone picks up voice signals, it will inevitably be interfered by ambient noise, transmission medium noise, internal electrical noise of communication equipment, room reverberation, and other speakers' voices, so the quality of the voice picked up is affected . Speech enhancement technology is one of the core technologies in the field of speech processing. It can extract clean target speech from noisy speech to improve the speech quality at the receiving end, improve the clarity, intelligibility and comfort of speech, and make it easy for people to accept Or improve the performance of speech processing systems. [0003] The research on speech enhancement technology...

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Application Information

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IPC IPC(8): G10L21/02G10L21/0216
CPCG10L21/02G10L21/0216G10L2021/02166
Inventor 石伟王鹏邹月娴谢友希石刚邹爱华
Owner SHENZHEN HIAN SPEECH SCI & TECH CO LTD
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