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Speech Endpoint Detection Based on Improvement Feature and S-Transform

  • Lu XunboEmail author
  • Zhu ChunliEmail author
  • Li XinEmail author
Conference paper
Part of the Communications in Computer and Information Science book series (CCIS, volume 924)

Abstract

In the low SNR and non-stationary noise environment, traditional feature detection methods will lead to a sharp drop in detection performance. This paper proposes an improved speech endpoint detection algorithm based on S-transform (ST). ST has the advantages of both Short Fast Fourier Transform (SFFT) and Wavelet Transform (WT). It can extract more robust MFCC features. In this paper, the ST is combined with spectral subtraction to transform the speech into the time-frequency joint domain in order to obtain a purer speech. Then the dynamic threshold updating mechanism is used to detect the noisy speech with two-parameter double threshold method. Through Matlab simulation, the improved algorithm presented in this paper is compared with two other algorithms. The experimental results reveal that this algorithm has a higher accuracy in endpoint detection. Moreover, it has a great advantage both in detection rate and error rate.

Keywords

Endpoint detection S-transform Spectral subtraction MFCC Uniform sub-band variance 

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Copyright information

© Springer Nature Singapore Pte Ltd. 2018

Authors and Affiliations

  1. 1.School of Mechatronic Engineering and AutomationShanghai UniversityShanghaiChina

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