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Voice enhancing method

A voice enhancement and real-time voice technology, applied in voice analysis, instruments, etc., can solve the problems of poor microphone directivity and poor residual noise attenuation processing ability

Active Publication Date: 2010-11-24
AAC TECH PTE LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the speech enhancement method in the related art, the directivity of the microphone is not strong, the signal output by the transmitter is not a noise-reduced signal, and the attenuation and processing ability of the residual noise is poor

Method used

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Embodiment Construction

[0038] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0039] like figure 1 , as shown in 2, the main idea of ​​the present invention is to form a real-time speech enhancement system by integrating the speech enhancement algorithm in a dedicated chip, and by designing the interface and data transmission between the chip and the corresponding microphone. The voice signal is collected by the microphone and directly processed by the voice enhancement algorithm in the chip to obtain an enhanced signal, which is output for secondary use.

[0040] The basic steps of speech enhancement algorithm among the present invention are as follows:

[0041] 1. Use a microphone to receive external signals;

[0042] 2. The signal is sent to the chip, and the analog-to-digital conversion is completed first (if a digital microphone is used, this step can be omitted);

[0043] 3. Perform voice enhancement processing on the ob...

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PUM

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Abstract

The invention provides a voice enhancing method, which comprises the following steps of: providing a microphone and a voice signal processing chip integrated in the microphone, wherein the microphone is used for receiving external signals, and the voice signal processing chip is used for performing voice enhancing processing; and transforming frequency domain signals obtained by processing noise voice signals to a time domain, and performing deemphasis processing to obtain output signals. The method can realize the microphone directivity, and enhances the capacity of processing the voice signals.

Description

【Technical field】 [0001] The invention provides a voice enhancement method, in particular to a microphone-based voice enhancement method. 【Background technique】 [0002] Due to the existence of a large amount of environmental noise, the signal-to-noise ratio of the voice signal collected by the microphone is generally not high enough, so it is necessary to improve the signal-to-noise ratio of the input voice through a voice enhancement method. The existing voice enhancement algorithms are mostly used as additional functions of the product, and the algorithms are implemented as a module integrated in the chip, or implemented in pure software. There is no product that directly implements the speech enhancement algorithm as a chip, integrated in the microphone, and performs noise reduction processing. [0003] In the speech enhancement method in the related art, the directivity of the microphone is not strong, the signal output by the transmitter is not a noise-reduced signal,...

Claims

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Application Information

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IPC IPC(8): G10L21/02G10L21/0232
Inventor 叶利剑
Owner AAC TECH PTE LTD
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