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Automatic speech recognition method and system based on artificial intelligence

A technology of automatic speech recognition and artificial intelligence, applied in speech recognition, speech analysis, instruments, etc., can solve problems such as low efficiency of professional vocabulary recognition and inaccurate recognition of professional vocabulary, so as to reduce professional misunderstandings, improve professionalism, and improve search speed effect

Active Publication Date: 2021-06-11
深圳奇实科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention provides an automatic speech recognition method and system based on artificial intelligence to solve the problems of inaccurate recognition of professional vocabulary and low recognition efficiency of professional vocabulary existing in the prior art

Method used

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  • Automatic speech recognition method and system based on artificial intelligence
  • Automatic speech recognition method and system based on artificial intelligence
  • Automatic speech recognition method and system based on artificial intelligence

Examples

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Comparison scheme
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Embodiment 1

[0081] Embodiments of the present invention provide a method for automatic speech recognition based on artificial intelligence, figure 1 It is a flow chart of an artificial intelligence-based automatic speech recognition method in an embodiment of the present invention, please refer to figure 1 , the method includes the following steps:

[0082] Step S101, receiving a voice signal to be recognized;

[0083] Step S102, preprocessing the speech signal to be recognized to obtain a speech input signal;

[0084] Step S103, converting the voice input signal from the time domain to the frequency domain, and extracting voice feature parameters;

[0085] Step S104, randomly sampling the speech characteristic parameters to obtain several sample characteristic parameters;

[0086] Step S105, input the sample feature parameters into the acoustic model and the language model, and obtain the recognition result through decoding and searching;

[0087] Step S106, input the recognition res...

Embodiment 2

[0098] On the basis of Embodiment 1, after describing and outputting the corresponding text, it includes:

[0099] Inputting the outputted text into the spelling error correction model to obtain the text after error correction;

[0100] Output the corrected text as the final text.

[0101] The working principle and beneficial effects of the above technical solution are as follows: the solution adopted in this embodiment is a process of spelling error correction for the input text. After passing through the acoustic model and the language model, the output text may have spelling errors and other forms. The problem is that in order to ensure the accuracy and professionalism of automatic speech recognition, it is necessary to correct the spelling of the output text later. By setting the spelling error correction model, it is ensured that the final output text has no formal spelling errors and the accuracy of automatic speech recognition is improved. .

Embodiment 3

[0103] On the basis of embodiment 1, described vocabulary classification template construction method comprises:

[0104] Acquire a large number of professional vocabulary belonging to different industries;

[0105] The professional vocabulary is classified and trained according to the industry to which the professional vocabulary belongs using a convolutional neural network;

[0106] A classification result is obtained, and the classification result is stored in a classification database to form a vocabulary classification template.

[0107]The working principle of the above technical solution is: the solution adopted in this embodiment is a description of the construction method of the vocabulary classification template. By obtaining a large number of professional vocabulary in different industries, the convolutional neural network is used to classify and train the above-mentioned professional vocabulary based on the industry. Classify, and store the classification results...

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Abstract

The invention discloses an automatic speech recognition method and system based on artificial intelligence. The method comprises the steps: comparing vocabularies in a recognition result with professional vocabularies in a vocabulary classification template by employing the vocabulary classification template, acquiring the proportion of the professional vocabularies in the vocabularies in the recognition result, and judging whether professional vocabulary speech recognition is needed or not according to the proportion. According to the scheme provided by the invention, the accuracy and accuracy of the recognition of the professional vocabularies can be improved, particularly the accuracy, precision and specialty of video conference records in the professional field are enhanced, and the specialty of enterprises in the related professional field is improved, More importantly, misunderstanding of vocabulary recognition caused by automatic voice recognition of professional vocabularies is reduced, and heavy loss caused by misunderstanding of voice recognition is prevented. Meanwhile, on the basis of the vocabulary classification template, the search rate of the professional vocabularies is improved, and then the recognition efficiency of the automatic voice for the professional vocabulary is improved.

Description

technical field [0001] The invention relates to the technical field of artificial intelligence, in particular to an artificial intelligence-based automatic speech recognition method and system. Background technique [0002] Automatic Speech Recognition (ASR for short) is a technology for converting human speech into text. Speech recognition is a multidisciplinary field, which is closely connected with many disciplines such as acoustics, phonetics, linguistics, digital signal processing theory, information theory, and computer science. Due to the diversity and complexity of speech signals, speech recognition systems can only obtain satisfactory performance under certain restrictions, or can only be applied to certain specific occasions. [0003] The goal of automatic speech recognition technology is to enable computers to "dictate" continuous speech spoken by different people, which is commonly known as "voice dictation machine", which is a technology that realizes the conve...

Claims

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Application Information

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IPC IPC(8): G10L15/26G10L15/02G10L15/16G10L15/06G10L15/08G10L15/18G10L21/0208G10L25/57
CPCG10L15/26G10L15/02G10L15/16G10L15/063G10L15/08G10L15/18G10L21/0208G10L25/57G10L2015/0631G10L2015/0633
Inventor 张子奇聂鹏
Owner 深圳奇实科技有限公司
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