Title :
Two speech processing schemes for the University of Melbourne multi-channel cochlear implant prosthesis
Author :
Tong, Y.C. ; Chang, J.S. ; Harrison, J.M. ; Hugien, J. ; Clark, G.M.
Author_Institution :
Dept. of Otolaryngology, Melbourne Univ., Parkville, Vic., Australia
Abstract :
A series of speech perceptual studies was conducted on normally hearing subjects using synthesized acoustic signals based on two speech processing schemes: zero-crossing and filter bank. The filter bank scheme was shown to provide more speech information than the zero-crossing scheme. These schemes were implanted in a laboratory-based speech processor, which is described. A low-power switched capacitor speech spectrum analyzer embodying several novel design methodologies is also described. This spectrum analyzer can be used to implement the filter bank scheme in a wearable speech processor
Keywords :
hearing aids; speech analysis and processing; speech synthesis; University of Melbourne; filter bank scheme; laboratory-based speech processor; low power circuits; multi-channel cochlear implant prosthesis; normally hearing subjects; speech perceptual studies; speech processing schemes; switched capacitor speech spectrum analyzer; synthesized acoustic signals; wearable speech processor; zero-crossing scheme; Auditory system; Capacitors; Filter bank; Laboratories; Signal processing; Signal synthesis; Spectral analysis; Speech analysis; Speech processing; Speech synthesis;
Conference_Titel :
Circuits and Systems, 1989., IEEE International Symposium on
Conference_Location :
Portland, OR
DOI :
10.1109/ISCAS.1989.100532
