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Method of voice recognition self-adaptive system based on heterogeneous dual-MIC in mobile environment

A technology of speech recognition and mobile environment, applied in speech recognition, speech analysis, instruments and other directions, to achieve the effect of simple implementation, reducing the pressure of complex scenes, and improving the accuracy rate

Inactive Publication Date: 2017-03-15
深圳凡豆信息科技有限公司
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AI Technical Summary

Problems solved by technology

Therefore, in addition to big data and deep learning, how to maintain good speech reception in the presence of noise is a big challenge for engineers

Method used

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  • Method of voice recognition self-adaptive system based on heterogeneous dual-MIC in mobile environment
  • Method of voice recognition self-adaptive system based on heterogeneous dual-MIC in mobile environment
  • Method of voice recognition self-adaptive system based on heterogeneous dual-MIC in mobile environment

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Embodiment Construction

[0028] The present invention will be further elaborated below in conjunction with accompanying drawing:

[0029] as attached figure 1 and attached Figure 4 As shown, the mobile terminal of the present invention includes: a PA binding module, a preference module and an update module. Initially set the PA value of the omni-directional main MIC1 and directional sub-MIC2, the main MIC1 realizes dynamic binding of PA, and the sub-MIC2 binds a fixed PA value; after binding the PA module, enter the preferred module, first need to set the preferred mode of the main and sub-MIC Identify the rules, and when the terminal enters the recording mode, start the recording channels of the main and auxiliary MICs at the same time, and keep recording; detect in real time whether the main and auxiliary MICs have voice endpoint characteristics, and if so, select the optimal audio according to the optimization rules Voice recognition is performed on the data of the channel until the end point of...

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Abstract

The invention discloses a method of a voice recognition self-adaptive system based on heterogeneous dual-MIC in a mobile environment. The method includes the following steps: setting a preferential recognition rule of a main Microphone (MIC) and an auxiliary MIC according to a signal-to-noise characteristic; when a terminal enters a recording mode, starting recording channels of the main MIC and the auxiliary MIC at the same time, and detecting a voice endpoint in real time; if a voice signal is detected, picking out data of an optimal audio channel according to the preferential rule to perform voice recognition; and finally, performing soft control of a main MIC 1 hardware Power Amplifier (PA) according to information in a current audio file, so as to realize dynamic adjustment of the PA. After implementation of the method of a voice recognition self-adaptive system based on heterogeneous dual-MIC in a mobile environment, in noisy environment, the auxiliary MIC 2 with a relatively small pickup range is preferred, thereby reducing influence of the environment on a recognition engine, and the main MIC 1 can detect the distance of a user and adjust the PA in real time, thereby realizing a self-adaptive system combining a recording front end and a recognition effect, and improving recognition performance and perfecting user experience.

Description

technical field [0001] The invention discloses a method for a speech recognition self-adaptive system based on heterogeneous dual MICs in a mobile environment, and belongs to the technical field of speech signal processing. Background technique [0002] With the advancement of technology, human-computer interaction has experienced three generations of changes from command line, graphical interface to touchpad. Now, in order to free hands to operate, we have come to the entrance of the era of voice control, and the mode of human-computer interaction is undergoing tremendous changes. Recent news shows that major technology giants have begun to deploy the field of voice interaction. The industry generally believes that voice, as the most natural and convenient way to interact with human information, will surely become an important part of the new human-computer interaction model. [0003] Because mobile and portable devices are used in various places, users may often be in ext...

Claims

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Application Information

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IPC IPC(8): G10L15/20G10L21/0216
CPCG10L15/20G10L21/0216G10L2021/02165
Inventor 胡一梅于拾全卫亚东
Owner 深圳凡豆信息科技有限公司
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