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Voice recognition method and device based on cosine similarity

A cosine similarity and speech recognition technology, which is applied in speech recognition, speech analysis, instruments, etc., can solve the problems of reduced recognition rate, achieve the effect of reducing errors and improving recognition rate

Pending Publication Date: 2020-03-17
CANAAN BRIGHT SIGHT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the problem in the speech recognition process in the prior art that the recognition rate is reduced due to the difference in sound level between the speech to be recognized and the reference template, the embodiment of the present invention proposes a speech recognition method and device based on cosine similarity, Reduced errors caused by different volumes and further improved the recognition rate

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  • Voice recognition method and device based on cosine similarity
  • Voice recognition method and device based on cosine similarity
  • Voice recognition method and device based on cosine similarity

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Embodiment Construction

[0095] The principle and spirit of the present invention will be described below with reference to several exemplary embodiments. It should be understood that these embodiments are given only to enable those skilled in the art to better understand and implement the present invention, rather than to limit the scope of the present invention in any way. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0096] exemplary method

[0097] Embodiments of the present invention propose a method for detecting speech endpoints based on fusion features.

[0098] figure 1 is a schematic flowchart of a method for detecting a speech endpoint based on fusion features according to an embodiment of the present invention. Such as figure 1 As shown, the method may include but not limited to the following steps, optionally, the recognition is isolated word speech recogn...

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Abstract

The embodiment of the invention provides a voice recognition method and system based on cosine similarity. The method comprises the steps of acquiring to-be-tested voice ; carrying out framing processing on the to-be-tested voice; obtaining a to-be-tested feature vector sequence by extracting the feature vector of each frame of to-be-tested voice; calculating cosine similarity between the to-be-tested feature vector sequence and at least one preset template feature vector sequence by utilizing a cosine value-based similarity algorithm; and recognizing the to-be-tested voice based on the cosinesimilarity. According to the embodiment of the invention, errors caused by the sound size difference between the recorded voice template and the voice to be detected are reduced, and the recognitionrate is improved.

Description

technical field [0001] The invention relates to the field of speech recognition, in particular to a speech recognition method and device based on cosine similarity. Background technique [0002] This section is intended to provide a background or context for implementations of the invention that are recited in the claims. The descriptions herein are not admitted to be prior art by inclusion in this section. [0003] In recent years, with the development of human-computer information interaction technology, speech recognition technology has shown its importance. In speech recognition, the Euclidean distance is usually used as a measure in the prior art to calculate the similarity between two time series for further recognition. [0004] For example, in a speech recognition system, a dynamic time warping algorithm (Dynamic Time Warping, DTW for short) is one of the key technologies in speech recognition. DTW calculates the similarity between two time series by extending and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L15/10
CPCG10L15/10
Inventor 吴威张楠赓
Owner CANAAN BRIGHT SIGHT CO LTD