Speech enhancement device and method based on acoustic vector sensor space sharpening technique

A vector sensor and voice enhancement technology, which is applied in voice analysis, instruments, etc., can solve problems such as difficulty in meeting needs, lack of suppression ability, and inability to enhance multiple spatial sound sources at the same time, so as to achieve strong practicability, enhance directional voice, small size effect

Active Publication Date: 2017-11-21
SHENZHEN HIAN SPEECH SCI & TECH CO LTD
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Problems solved by technology

[0014] It can be seen from the beam response that the SMF beamformer can enhance the sound source in the target direction to a certain extent and suppress the interference sound source in the non-target direction, but it needs the angle of the target sound source as prior knowledge, and it cannot enhance multiple spatial sound sources at the same time. There is no ability to suppress non-directional background noise, so it is difficult to meet the requirements in many practical applications

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  • Speech enhancement device and method based on acoustic vector sensor space sharpening technique
  • Speech enhancement device and method based on acoustic vector sensor space sharpening technique
  • Speech enhancement device and method based on acoustic vector sensor space sharpening technique

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Embodiment Construction

[0055] 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.

[0056] Such as figure 1 Shown is a schematic structural diagram of the speech enhancement device based on the acoustic vector sensor space sharpening technology of the present invention, the device includes an acoustic vector sensor for collecting audio signals, and is used to detect directional sound sources in the audio signals collected by the acoustic vector sensor The number of directional sound sources and the directional sound source detection module that detects the angle interval where each directional sound source is located, the Gaussian filter used to sharpen all detected directional sound sources, and the vector processed by the Gaussian filter A scalar filter that converts the signal into a scalar signal. In the embodiment of the present invention, the non-...

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Abstract

The present invention relates to a speech enhancement device based on an acoustic vector sensor space sharpening technique comprising an acoustic vector sensor for collecting an audio signal, a directional sound source detection module, a Gaussian filter, a mute filter and a scalar filter. The audio signal collected by the acoustic vector sensor is subjected to beam processing through the directional sound source detection module, the Gaussian filter, the mute filter and the scalar filter which are sequentially connected to obtain an enhanced target direction voice. The present invention also provides a method of enhancing a target voice. By the speech enhancement device and the method, it is possible to effectively enhance all spatial directional sound sources and suppress background noise; in addition, the device has low computational complexity and is very advantageous for application and promotion on small devices.

Description

technical field [0001] The present invention relates to the technical field of speech signal processing, in particular to a speech enhancement device and method based on acoustic vector sensor space sharpening technology. 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 based on a single mi...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L21/0224
CPCG10L21/0224
Inventor 石伟王鹏邹月娴
Owner SHENZHEN HIAN SPEECH SCI & TECH CO LTD
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