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Vehicle-mounted voice recognition method and system

A technology for speech recognition and clean speech, applied in the field of vehicle speech recognition methods and systems, can solve the problems of mutual interference of multiple speakers, poor vehicle speech recognition effect, and harsh vehicle environment, so as to improve the wake-up rate and recognition rate. , The effect of reducing false wake-up, high wake-up rate and recognition rate

Active Publication Date: 2019-11-15
AISPEECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to at least solve the problems in the prior art that the vehicle-mounted environment is harsh, the voices of multiple speakers interfere with each other, and the vehicle-mounted voice recognition effect is poor

Method used

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  • Vehicle-mounted voice recognition method and system

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Embodiment Construction

[0026] 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 and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0027] like figure 1 Shown is a flow chart of a vehicle-mounted speech recognition method provided by an embodiment of the present invention, including the following steps:

[0028] S11: Use multiple microphones to separate the sound zone signals of the vehicle space, at least divide the vehicle space into the front seat sound zone and the rear s...

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Abstract

The embodiment of the invention provides a vehicle-mounted voice recognition method. The method comprises the following steps: carrying out voice area signal separation on vehicle-mounted space by using a plurality of microphones, so that the vehicle-mounted space is at least separated into a plurality of voice areas, and forming a distributed microphone network according to the microphones in thevoice areas; collecting audio under the vehicle-mounted environment in real time through the distributed microphone network, and inhibiting vehicle-mounted environment self noise in the audio according to the echo cancellation algorithm; separating voices of a plurality of speakers in the inhibited audio through a blind source separation algorithm; and locating the voice area of each speaker through the distributed microphone network, when no voice made by the speakers is available, collecting the voice as noise estimation, when voice made by the speakers is available, carrying out denoisingaccording to the noise estimation collected by a previous frame, determining clean voice, and carrying out voice recognition. The embodiment of the invention further provides a vehicle-mounted voice recognition system. According to the embodiment of the invention, in the vehicle-mounted noise environment, the relatively high awakening rate and recognition rate are available.

Description

technical field [0001] The invention relates to the field of voice recognition, in particular to a method and system for vehicle-mounted voice recognition. Background technique [0002] With the popularization of portable mobile terminals and smart hardware devices, it has gradually become a trend to realize natural human-computer interaction functions through voice dialogue. This convenient method greatly enhances the user experience of products. Among them, one of the entrance methods of voice interaction is voice wake-up and voice recognition technology, and the acquisition of high wake-up rate and high recognition rate depends on excellent front-end signal processing. Through the front-end signal processing technology, the target signal is enhanced and the interference signal is suppressed, so as to realize the wake-up and identification of the target signal. Using voice to control various smart devices in the vehicle frees the driver's hands. [0003] In the process o...

Claims

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Application Information

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IPC IPC(8): G10L21/0208G10L21/0216G10L21/0272G10L15/20
CPCG10L21/0208G10L21/0216G10L21/0272G10L15/20G10L2021/02082G10L2021/02166
Inventor 张华兵何赛娟
Owner AISPEECH CO LTD
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