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Voice wake-up method and apparatus

A voice wake-up and configurator technology, applied in voice analysis, data processing power supply, instruments, etc., can solve the problems of high power consumption, invalid wake-up, false wake-up, etc.

Inactive Publication Date: 2016-01-20
NANJING ADVANCED BIOLOGICAL MATERIALS & PROCESS EQUIP INST CO LTD
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Problems solved by technology

[0004] Using the above-mentioned voice wake-up scheme, when the terminal is in a different environment, such as switching from a quiet environment to a noisy environment, since the preset threshold is fixed, invalid wake-up or false wake-up often occurs, resulting in the terminal being in a noisy environment. high power consumption

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  • Voice wake-up method and apparatus

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Embodiment Construction

[0076] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are the Some, but not all, embodiments are invented. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0077] The meaning of voice wake-up means that under any circumstances, the terminal can be activated through a predefined wake-up word, and a specific application can be executed. It is similar to the processing that the user presses the button to light up the screen and activate the mobile phone. The advantage of voice wake-up is that it frees the user's hands.

[0...

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Abstract

The embodiment of the invention provides a voice wake-up method and apparatus. The method comprises: periodic sampling is carried out on an audio signal, wherein sampling is carried out at ti time to obtain a sampling signal; audio energy of the sampling signal is calculated; when the audio energy is larger than or equal to a first threshold value at the ti time, a digital signal processor (DSP) is waken up to carry out voice activation detection (VAD); when the VAD fails, detection fails n times continuously before the ti time, and a difference value between first noise energy and a first threshold value at the ti time is larger than a preset first threshold value, a second threshold value is generated according to the first noise energy and is used as a first threshold value at ti+1 time, wherein the first noise energy is obtained by extracting the sampling signal by a first extraction rate 1 / x and carrying out slow-speed tracking filtering on the extracted sampling point. According to the embodiment of the invention, the number of times of VAD is reduced and reduction of power consumption of the terminal in a noisy environment is realized.

Description

technical field [0001] Embodiments of the present invention relate to voice wake-up technology, and in particular, to a voice wake-up method and device. Background technique [0002] With the development of science and technology, terminals generally have a voice wake-up function, and users use voice to wake up the terminal and perform corresponding voice control on it. [0003] The current voice wake-up solution uses two-stage cooperation of a Microphone Activity Detection (MAD for short) circuit and a Digital Signal Processor (DSP for short) to wake up the terminal. Wherein, if the energy of the current audio signal detected by the MAD circuit is greater than the preset threshold, the DSP is woken up to perform voice activation detection (VoiceActivityDetection, referred to as: VAD), to identify whether the above-mentioned audio signal is the voice of the user through the VAD; if so, wake up Terminal; if not, the DSP wake-up is an invalid wake-up or false wake-up. Specif...

Claims

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Application Information

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IPC IPC(8): G10L17/22G06F1/32
Inventor 马涛
Owner NANJING ADVANCED BIOLOGICAL MATERIALS & PROCESS EQUIP INST CO LTD
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