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Multimedia Tools and Applications

, Volume 78, Issue 21, pp 30749–30767 | Cite as

Adaptive recognition of different accents conversations based on convolutional neural network

  • Jiang Zhong
  • Pan ZhangEmail author
  • Xue Li
Article
  • 130 Downloads

Abstract

In this paper, an adaptive recognition of different accents conversations is proposed based on Convolutional Neural Network(CNN), which is used to deal with dialogue speech recognition problems that contain different accents in the CALL_CENTER environment. For the first time, the Mel-Frequency Cepstral Coefficients (MFCC) feature and the SPECTROGRAM feature are combined as the input of CNN to train the speakers’ voice feature model and to estimate the change point. Then, an accent classification method based on weighted fusion feature is proposed, and we introduced the IFLY voice recognition system to propose different accent dialogue recognition models based on speaker segmentation. In the experiments, a real database about the dialogue voice related to insurance sales and real estate sales industry is used to be dataset. After a comparative experiment, the results show that the word error rate for speech recognition after speaker segmentation and accent classification was reduced by 20% compared to the original speech recognition word error rate.

Keywords

Combined feature Speaker segmentation Accent classification Speech recognition 

Notes

Acknowledgements

The authors acknowledge the National Key Research and Development Program of China (Grant No.2017YFB1402400), National High Technology Research and Development Program of China (Grant: 2015AA015308), Social Undertakings and Livelihood Security Science and Technology Innovation Funds of CQ CSTC (Grant: cstc2017shmsA0641), the National Nature Science Foundation of China (Grant: 61762025).

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.College of Computer ScienceChongqing UniversityChongqingChina
  2. 2.Key Laboratory of Dependable Service Computing in Cyber Physical Society, Ministry of EducationChongqing UniversityChongqingChina
  3. 3.China United Network Communications Co., Ltd. Xi’an BranchXi’anChina
  4. 4.School of Information Technology and Electrical EngineeringUniversity of QueenslandBrisbaneAustralia

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