High-efficiency voice detecting method

A speech detection and non-speech technology, applied in speech analysis, instruments, etc., can solve problems such as speech detection system performance degradation, achieve the effect of improving efficiency and robustness, and improving communication efficiency
CN103646649AActive Publication Date: 2014-03-19中科极限元(杭州)智能科技股份有限公司
4 Cites 56 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
中科极限元(杭州)智能科技股份有限公司
Publication Date
2014-03-19

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a high-efficiency voice detecting method. The method comprises the following steps: analyzing the short-time energy and the short-time zero-crossing rate of an original audio frequency on a time domain and removing parts of non-voice signals; analyzing the spectral envelop characteristic and the entropy characteristic of a preserved audio frequency signal subband on a frequency domain and further removing parts of non-voice signals; forming an audio frequency segment by continuous frames with similar characteristics in each preserved frame of audio frequency signals; calculating the average value of Mel-frequency Cepstral coefficient of each frame in each audio frequency, respectively inputting the average values into a voice gaussian mixture model and various non-voice gaussian mixture models, and performing band-level judgment on whether the audio frequency segment contains voice data according to the output probability of each model, thereby finally obtaining a voice detecting result. The method is capable of detecting voice signals from audio frequency data streams under various complex environments, and positioning the boundary between voice segment data and non-voice segment data relatively correctly.
Need to check novelty before this filing date? Find Prior Art

Description

Technical field

[0001] The invention relates to the field of intelligent information processing, in particular to an efficient voice detection method. Background technique

[0002] Voice is one of the main means for humans to communicate information. Voice detection technology has always occupied an important position in the field of voice signal processing. As a preprocessing module for voice recognition, speaker recognition, and voice coding, the voice detection system will be robust It directly affects the performance of other voice processing modules. In the face of random noise in various complex environments, how to accurately locate the voice segment data through an efficient method and effectively distinguish voice and non-voice signals has become a research hotspot at home and abroad, and has attracted more and more attention. . The voice detection system has great practical value. The high-quality robust voice detection technology has been widely used in various commu...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More