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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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.
Application Domain
Speech recognition
Technology Topic
Self adaptiveSpeech identification +6
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