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colopods

colopods

				Summary The proposed project reduces the power consumption of the external processor of the LAURA Cochlear Implant system. The Laura Cochlear Implant is an implantable device for the deaf and profoundly hearing impaired that electrically stimulates the auditory nerve fibres. The operation of the internal part of the LAURA cochlear implant system is controlled by an external speech processing system the size of a normal hearing aid. In this speech processor the sound signal is processed into stimulation commands that are transmitted to the internal part. A low power implementation will make operation from standard hearing aid battery cells possible. This will mean a fundamental upgrading of the LAURA cochlear implant system and will allow a stronger position for Antwerp Bionic Systems on the world market. It is expected that the redesign of the cochlear hearing aid Digital Signal Processor in a low power technology will reduce the processor's power consumption by a factor of 10. Through' gained know-how and experience in low power optimisation, low power DSP design techniques the speech processing can be further optimised using dedicated processing architectures. ABS has two alternatives for the low power I.C. technology for the actual implementation: a low power, high speed IMEC pilot process and a mainstream PHILIPS process that would be operated at a low voltage yielding a low power, low speed technology. Since both technologies have their own drawbacks and advantages, a pre-study is incorporated in the project to select the most appropriate technology. Objectives Selection of a future oriented low-power technology enabling future power reduction through integration of analog modules. Design of a speech processor IC yielding a power reduction of 90% compared to the 3.3 Volt implementation. Gain low-power design know-how for further power reduction of the system. Participants ABS (B) Design Story Public Deliverables

   

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