1. VARIABLE STIMULATION RATES FOR COCHLEAR IMPLANTS.
- Author
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Adiloglu, Kamil, Herzke, Tobias, and Backus, Bradford
- Subjects
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ACOUSTIC stimulation , *COCHLEAR implants , *ACOUSTIC signal processing , *ELECTRODES , *AUDIO frequency - Abstract
State-of-the-art cochlear implants perform a frame-based signal processing on the incoming audio signal with a fixed frame-size. In the end of the signal processing chain, a stimulation pattern is generated for the current frame. As a consequence, the electrodes in the array are stimulated with a fixed rate independent of their frequency bands. In other words, the stimulation rate is dependent on and mostly equal to the frame rate of the incoming audio frames. In the context of the ABCIT (Advanced Binaural Cochlear Implant Technology) project, we have developed a research interface for cochlear implants (Adiloglu et.al. IWAENC 14), which is now being extended with a capability to stimulate at a variable rate. Different methods of adapting the stimulation rate depending on the input signal are possible and will be evaluated with subjects in the future. One possible strategy to adapt the stimulation rate depends on fundamental frequency (F0) tracking. Here, we present how the adaptive stimulation part has been implemented and present first objective measurement results. [ABSTRACT FROM AUTHOR]
- Published
- 2015