Voice identification method and apparatus thereof

A technology of speech recognition and speech recognition model, applied in speech recognition, speech analysis, instruments, etc., can solve the problems of long time consumption and poor real-time performance, and achieve the effect of improving accuracy, reducing time, and improving the scope of application

Active Publication Date: 2016-10-19
SPREADTRUM COMM (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, the recent speech recognition method using support vector machine and ITU-T G.729B VAD parameters needs to calculate the corresponding signal-to-noise ratio information, so there are problems of long time consumption and poor real-time performance

Method used

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  • Voice identification method and apparatus thereof
  • Voice identification method and apparatus thereof
  • Voice identification method and apparatus thereof

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Embodiment Construction

[0065] In the voice activity detection method in the prior art, the acoustic features of the collected audio are extracted through the voice detection module, and the constructed recognition model is used to identify the extracted acoustic features to determine whether the input sound signal is voice. Early speech recognition methods used only simple energy-based features to classify input speech data. Recently, a speech recognition method that combines support vector machines with the speech recognition parameters of the ITU-TG.729B standard has appeared, which shows better speech recognition performance than the speech recognition method that only uses the ITU-TG.729B standard .

[0066] A recent speech recognition method that combines support vector machines with ITU-T G.729B VAD parameters uses two optional feature extraction methods for speech detection in noisy environments: one is based on sub-band SNR estimate, and the other is based on long-term SNR estimates. Among...

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Abstract

A voice identification method and an apparatus thereof are disclosed. The voice identification method comprises the following steps of processing collected input sound signals and acquiring input sound data, wherein the input sound data includes a noise portion and a voice portion; carrying out characteristic extraction on the noise portion and the voice portion so as to acquire a noise characteristic vector corresponding to the noise portion and a voice characteristic vector corresponding to the voice portion; inputting the extracted noise characteristic vector into a preset noise classification model and determining a noise type which the noise portion belongs to; selecting a voice identification model associated to the determined noise type; calculating a similarity value between the voice characteristic vector and the voice identification model associated to the determined noise type; and when the similarity value is determined to be greater than a preset value threshold, identifying input sound data. By using the above scheme, a speed and real-time performance of voice identification can be increased.

Description

technical field [0001] The invention relates to the technical field of voice recognition, in particular to a voice recognition method and device. Background technique [0002] Mobile terminals refer to computer equipment that can be used on the move, broadly speaking, including mobile phones, notebooks, tablet computers, POS machines, vehicle-mounted computers, etc. With the rapid development of integrated circuit technology, mobile terminals already have powerful processing capabilities, and mobile terminals are changing from a simple communication tool to a comprehensive information processing platform, which also adds a wider development space to mobile terminals. [0003] The use of a mobile terminal usually requires a certain concentration of the user's attention. Today's mobile terminal devices are equipped with touch screens, and users need to touch the touch screens to perform corresponding operations. However, when the user cannot touch the mobile terminal device,...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L15/02G10L15/06
Inventor 孙廷玮林福辉
Owner SPREADTRUM COMM (SHANGHAI) CO LTD
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