Voice wake-up method utilizing electronic equipment in noisy environment

Abstract

The invention provides a voice wake-up method utilizing electronic equipment in a noisy environment. The voice wake-up method utilizes the electronic equipment with n groups of voice input components,and comprises a sound recording step, a recorded sound processing step, a wake-up judging step and a voice identifying step; the wake-up judging step particularly comprises: calculating wake-up parameters according to a second signal by a set method and judging whether the wake-up parameters belong to a set wake-up set; if the wake-up parameters belong to the set wake-up set, proceeding to the voice identifying step; and if the wake-up parameters do not belong to the set wake-up set, returning to the sound recording step, wherein the second signal is a preprocessed sound signal obtained in the recorded sound processing step, n is an integer which is not smaller than 2. The voice wake-up method has the advantages of simple and convenient steps, small calculation amount and high wake-up rate, and can solve a problem of excessively low voice wake-up rate in the noisy environment or when multiple people talk and a problem of insufficient accuracy of a positioning angle of a double-microphone sound source.

Description

technical field [0001] The present invention relates to the technical field of voice recognition, in particular to a voice wake-up method for electronic equipment in a noisy environment, and in particular to a method for increasing the voice wake-up rate of a dual-microphone array device in a noisy environment. Background technique [0002] Voice wake-up means that the user wakes up the electronic device by uttering a wake-up word, so that the electronic device enters a state of waiting for a voice command. For example, voice wake-up is applied to home appliances, so that users can control home appliances without manual operation. [0003] At present, the voice smart home appliances with dual-microphone arrays, the voice wake-up is realized in this way. When waking up, the sound is picked up at 180 degrees without beamforming. After the user says the wake-up word, the speaker's angle is calculated through the dual-mic array, and then Do enhanced beam calculation for the ang...

AI Technical Summary

Problems solved by technology

[0004] Although this method can perform beam noise reduction on the wake-up recording, it does not perform beam noise reduction due to the release of the beam angle when waking up, so when there is some noise around or someone is talking, the voice wake-up rate will be greatly reduced

In addition, due to the inaccurate positioning angle of the dual-mic sound source, the beam noise reduction will suppress the speaker's voice after waking up, and the accuracy of speech recognition calculation will decrease instead.

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