|Table of Contents|

Adaptive Frequency Transform for Speaker Identification

《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

Issue:
2010年02期
Page:
182-186
Research Field:
Publishing date:

Info

Title:
Adaptive Frequency Transform for Speaker Identification
Author(s):
LI Yan-ping14TANG Zhen-min1DING Hui12ZHANG Yan13
1.School of Computer Science and Technology,NUST,Nanjing 210094,China;2.School of Mathematics and Information Engineering,Jiaxing University,Jiaxing 314001,China;3.School of Information Technology,Jinling Institute of Technology,Nanjing 210006,China;4.College of Telecommunication and Information Engineering,Nanjing Univesity of Posts andTelecommunications,Nanjing 210003,China
Keywords:
speaker identification adaptive frequency transform discriminative feature non-uniform sub-bands
PACS:
TN912.34
DOI:
-
Abstract:
A novel method for speaker identification based on adaptive frequency transform is proposed here.According to the fact that the speaker information is non-uniformly distributed in frequency bands,the discrimination power between frequency components and individual characteristics is examined and the speaker information is quantified based on Fisher’s F-ration.A new adaptive frequency filter is designed,which can improve the frequency resolution in high contribution frequency domain,reduce the frequency resolution in low contribution frequency domain,and extract the discriminative feature DFCC(Discriminative frequency cepstral coefficient).In a clean environment,the results from the experiments on different testing materials indicate that the recognition rates based on DFCC increases by 1.45% on average than on traditional MFCC(Mel frequency cepstral coefficient),which confirms that the proposed feature is stable and independent of spoken contents.Furthermore,in the noise environment of different SNR levels,the experiment results demonstrate that the recognition rate increases by 6.37% on average,which confirms the effectiveness of discrimination and robustness of DFCC.

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Last Update: 2010-04-30