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Application of lifting scheme in pitch extraction for speech processing of cochlear implants based on characteristics of Chinese language

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4 Author(s)
Guan Tian ; Dept. of Biomedical Eng., Tsinghua Univ., Beijing, China ; Feng Shu ; Huang Shengyang ; Ye Datian,

Pitch extraction and estimation are very important issues in speech processing. Although frequency-domain analysis can get a good precision, its complex computing and mass memory occupation make it hardly suitable for cochlear implants based on characteristics of Chinese language. In this article, lifting scheme is adopted, combined with pitch extraction algorithm, to extract fundamental frequency of simulated signal and real speech signal. Veracious result is obtained and advantages in memory occupation as well as computing speed are found, which shows the great potential of lifting scheme in the application of pitch extraction in speech processing strategy for cochlear implants based on characteristics of Chinese language.

Published in:

Signal Processing, 2004. Proceedings. ICSP '04. 2004 7th International Conference on  (Volume:3 )

Date of Conference:

31 Aug.-4 Sept. 2004