Speech recognition method and device

Abstract

The embodiments of the present invention disclose a speech recognition method and device. According to one specific embodiment of the invention, the method includes the following steps that: the identity information of a target user inputting speech input signals is determined in response to the received speech input signals; the commonly-used expression set of the target user is extracted from astored commonly-used expression database on the basis of the identity information of the target user, wherein the commonly-used expression set contains a plurality of commonly-used expressions; acoustic feature extraction is performed on the speech input signals, and the acoustic features of the speech input signals are inputted into an acoustic model, so that the acoustic model score of the speech input signals can be obtained; whether the content of the speech input signals is a commonly-used expression of the target user is determined on the basis of the acoustic model score of the speech input signals and the acoustic model scores of the commonly-used expressions in the stored commonly-used expression set of the target user; and if the content of the speech input signals is a commonly-used expression of the target user, a language model is constructed based on commonly-used expressions is adopted to decode the acoustic features of the speech input signals, so that a speech recognition result can be obtained. With the method and device provided by the embodiments adopted, speech recognition efficiency can be improved.

Description

technical field [0001] The embodiments of the present application relate to the field of computer technology, specifically to the field of voice technology, and in particular to a voice recognition method and device. Background technique [0002] Artificial Intelligence (AI) is a new technical science that studies and develops theories, methods, technologies and application systems for simulating, extending and expanding human intelligence. Artificial intelligence is a branch of computer science that attempts to understand the essence of intelligence and produce a new intelligent machine that responds in a manner similar to human intelligence. Research in this field includes robotics, speech recognition, image recognition, natural language processing and expert systems, etc. Among them, speech recognition technology is an important direction in the field of computer science and artificial intelligence. [0003] Speech recognition usually converts speech signals into text a...

AI Technical Summary

Problems solved by technology

In the recognition process, it is necessary to search in a database containing a large amount of dictionary data, which requires a large amount of calculation and takes a lot of time

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