Online instruction word speech recognition method and system in noise environment

Abstract

The invention discloses an online instruction word speech recognition method and system in a noise environment, belongs to the technical field of speech recognition, and is used for solving the problem that an existing sequence reasoning model is poor in instruction word speech recognition effect in the noise environment. According to the technical key points, the method comprises the following steps: a voice recognition problem is converted into an image recognition problem for processing by using a CNN classification model, and voice and noise are accurately distinguished by using a CNN dichotomy network model; furthermore, a classification judgment method based on activation vector input is provided, the activation vector of a CNN network model is used as a judgment basis, classification of unknown category voice and instruction word voice is accurately achieved, and the open set recognition problem is well solved. According to the invention, non-instruction word speech can be effectively rejected, and accurate recognition of instruction word speech in a noise environment is realized. The method is suitable for noise-containing instruction word speech recognition when an intelligent mining robot or other equipment works.

Description

technical field [0001] The invention relates to the technical field of speech recognition, in particular to a method and system for speech recognition of online command words in a noisy environment. Background technique [0002] Speech recognition is a technology that enables machines to recognize or understand external voice input. This technology is the basis for further interaction between humans and machines. Only when the machine can recognize the input voice can it further understand the recognized content and make corresponding feedback. At present, the development prospect of speech recognition technology is very broad. As a direction of intelligent mining robot development, it can assist the driver to control the intelligent mining robot, reduce the difficulty of operating the intelligent mining robot, and has a wide application prospect. [0003] The rapid development of deep learning in recent years has attracted many researchers to devote their energy to researc...

AI Technical Summary

Problems solved by technology

[0004] In view of the above problems, the present invention proposes an online instruction word speech recognition method and system in a noisy environment to solve the problem that the existing sequence reasoning model has a poor effect on instruction word speech recognition in a noisy environment

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