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Customizable voice wake-up method and system

A voice wake-up and wake-up word technology, which is applied in speech analysis, speech recognition, instruments, etc., can solve the problem that the wake-up word cannot be customized, and achieve high wake-up performance, less computing resource consumption, and high accuracy.

Active Publication Date: 2016-11-09
AISPEECH CO LTD
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AI Technical Summary

Problems solved by technology

[0004] Aiming at the shortcomings of the prior art that the wake-up words cannot be customized and rely on the preset language model, the present invention proposes a customizable voice wake-up method and system, which utilizes the feature that the CTC model outputs sparse posterior probabilities for efficient search, thereby completing the search for wake-up words Confidence Calculation Techniques

Method used

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Embodiment Construction

[0027] This embodiment includes: an acoustic feature extraction module, a memory network module, a classification model module, a wake-up word search module, a decision-making module, and a threshold estimation module, wherein: the acoustic feature extraction module is connected to the memory network module and outputs the acoustic feature information of the speech to be tested , the memory network module is connected to the classification model module and transmits phoneme posterior information, the classification model module is connected to the wake-up word search module and transmits the maximum similar phoneme sequence, the wake-up word search module is connected to the decision-making module and outputs the output to be tested according to the received wake-up word The speech possible solution, the decision module obtains the judgment result according to the judgment threshold from the threshold estimation module and the speech possible solution to be tested.

[0028] Thi...

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Abstract

The invention discloses a customizable voice wake-up method and a system. Through using a long and short memory network and a connection time sequence classification model, phoneme information of the voice information is modeled, the model is trained, the model after training is adopted for testing, and a possible phoneme sequence most similar to a customized wake-up word is searched in a generated Lattice network structure and serves as a judgment basis. The feature of CTC model output posteriori probability sparsity is used for high-efficiency searching, and the technique of calculating the confidence of the wake-up word is completed. On one hand, high wake-up performance can be obtained, that is, high accuracy and low error wake-up can be obtained; and on the other hand, the calculation resources of the application system are relatively little consumed.

Description

technical field [0001] The present invention relates to a technology in the field of computer-aided control, in particular to a technology based on long-short-term memory network [0002] (LSTM) and connection temporal classification model (CTC) customizable voice wake-up method and system. Background technique [0003] In recent years, with the development of information technology, multimedia information technology including voice has become more and more research focus. Speech wake-up technology is an important field in speech recognition, and is widely used in voice command control systems. The task of a customizable Voice Wake-up system is to automatically discover and locate some pre-specified command words (wake-up words) from a continuous speech. The customizable feature is reflected in the fact that the wake-up word detection model does not depend on the user-specified wake-up word, so that the user's wake-up word can be easily changed without modifying the model....

Claims

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Application Information

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IPC IPC(8): G10L15/02G10L15/06G10L15/22
CPCG10L15/02G10L15/063G10L15/22G10L2015/025G10L2015/0631G10L2015/223
Inventor 俞凯钱彦旻庄毅萌陈哲怀常烜恺
Owner AISPEECH CO LTD
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