Presentation and DSP Implementation of Wavelet Zero-cross Stimulation Strategy for Cochlear Implants
- VernacularTitle:电子耳蜗的小波过零刺激方案及其DSP实现
- Author:
Hongyun LIU
;
Weidong WANG
- Publication Type:Journal Article
- Keywords:
cochlear implants;
wavelet zero-cross stimulation;
doubled frequency interval
- From:
Chinese Medical Equipment Journal
2003;0(11):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To introduce the wavelet zero -cross stimulation algorithm and based on which to design and implement the cochlear implants. Methods Through DSP and ICETEK-VC5416, the WZS speech coding strategy was simulated, and also the presented WZS strategy was compared to CIS strategy by hardware implementation and computer simulation. Results The processed audio signals, output from eight channels, were synthesized and played through loudhailer and could be heard with high fidelity. Conclusion The wavelet zero-cross stimulation(WZS) strategy, which generates stimulating pulsatile series at zero-cross points in the domain of wavelet transform, can keep the temporal correlation and coherence of speech remained in stimulating pulsatile series and reflects the characteristic of temporal coding for cochlea.
