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Text error correction method after voice conversion

A text error correction and speech conversion technology, which is applied in speech analysis, speech recognition, text database query, etc., can solve the problem of low accuracy of speech recognition

Active Publication Date: 2020-12-15
AVIC HUADONG OPTOELECTRONICS (SHANGHAI) CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problem that the accuracy rate of existing speech recognition is not high

Method used

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  • Text error correction method after voice conversion
  • Text error correction method after voice conversion

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Embodiment 1

[0037] refer to figure 1 and figure 2 , a text error correction method after voice conversion of the present embodiment, comprising the following steps:

[0038] S100, input voice information, perform voice feature extraction to obtain LPCC (Linear Prediction Cepstral Coefficient), Mel cepstral coefficient, output feature vector;

[0039] S200. Input the feature vector into the HMM (Hidden Markov Model) acoustic model, and output the phoneme information;

[0040] S300. Carry out tone-by-tone scanning in the form of single tone, two tone, three tone, and four tone, each word is first matched with the network thesaurus T1, if the match is successful, then output the text, if the match fails, then match with Standard thesaurus T2 for matching;

[0041] S400. Match each word with the thesaurus T2, if the matching is successful, output the text result, if the matching fails, continue to step S500;

[0042] S500. Judging the pronunciation of the word that fails to match, scanni...

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Abstract

The text error correction method after voice conversion comprises the following steps: S100, inputting voice information, and outputting a feature vector; s200, inputting the feature vector into an HMM acoustic model, and outputting to obtain phoneme information; s300, performing tone-by-tone scanning, matching with the network word bank T1, if the matching succeeds, outputting a text, and if thematching fails, matching with a standard word bank T2; s400, matching each word with the word bank T2, if matching succeeds, outputting a text result, and if matching fails, continuing the step S500;s500, performing pronunciation judgment on words which fail to be matched, and performing word-by-word scanning and approximate pronunciation conversion on the words; and S600, carrying out the stepsS300 and S400 on the converted words again. In the speech recognition text matching process, pronunciation replacement is conducted on words which fail to be matched, new words are formed, and speechrecognition text conversion errors caused by accent are corrected.

Description

technical field [0001] The invention belongs to the technical field of speech recognition conversion, in particular to a text error correction method after speech conversion. Background technique [0002] Talking to a machine so it can understand what you say has been a long-held dream. The image of the China Internet of Things School-Enterprise Alliance compares speech recognition to the auditory system of a machine. Speech recognition technology is a technology that allows machines to convert voice signals into corresponding text or commands through the process of recognition and understanding. [0003] Speech recognition technology mainly includes three aspects: feature extraction technology, pattern matching criteria and model training technology. The voice recognition technology of the Internet of Vehicles has also been fully cited. For example, it is safe and convenient to set the destination and direct navigation just by dictating. [0004] Speech recognition is an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F40/284G06F40/30G06F16/33G06K9/62G10L15/02G10L15/14G10L15/26G10L25/24
CPCG06F40/30G06F40/284G06F16/3344G10L15/02G10L15/144G10L15/26G10L25/24G10L2015/025G06F18/295G06F18/214
Inventor 徐涵许召辉马翼平陈年生范光宇饶蕾章弘凯
Owner AVIC HUADONG OPTOELECTRONICS (SHANGHAI) CO LTD