Title :
Application of Wavelet in Speech Processing of Cochlear Implant
Author :
Tian, Guan ; Shuli, Yu ; Datian, Ye
Author_Institution :
Dept. of Biomedical Eng., Tsinghua Univ., Beijing
Abstract :
Cochlear implant bypasses damaged hair cells and stimulates the auditory nerve directly in the cochlea. Wavelets are especially useful for speech processing of CI, since in the case of wavelets one speaks of a constant-Q filter bank as well as the cochlea. In this paper, a continuous wavelet has application in the filter bank design and an effective result is obtained. Also the lifting scheme, the so-called second generation of wavelet, is adopted, combined with pitch extraction algorithm, to extract fundamental frequency of speech signal. Veracious result is obtained, which shows the great potential of wavelet an lifting scheme in the application in speech processing strategy for cochlear implants based on characteristics of Chinese language
Keywords :
ear; prosthetics; speech processing; wavelet transforms; Chinese language; cochlear implant; constant-Q filter bank; continuous wavelet; fundamental frequency extraction; lifting scheme; pitch extraction algorithm; speech processing; wavelet second generation; Band pass filters; Biomedical engineering; Cochlear implants; Continuous wavelet transforms; Filter bank; Frequency; Hair; Natural languages; Speech processing; Wavelet transforms; Wavelet Lifting Scheme Cochlear Implant;
Conference_Titel :
Engineering in Medicine and Biology Society, 2005. IEEE-EMBS 2005. 27th Annual International Conference of the
Conference_Location :
Shanghai
Print_ISBN :
0-7803-8741-4
DOI :
10.1109/IEMBS.2005.1615687
