SPAIDE: A Real-time Research Platform for the Clarion CII/90K Cochlear Implant
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SPAIDE: A Real-time Research Platform for the Clarion CII/90K Cochlear Implant L. Van Immerseel Medical Electronics Lab, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium Advanced Bionics European Research Lab, Groenenborgerlaan 171, 2020 Antwerp, Belgium Email: [email protected]
S. Peeters Medical Electronics Lab, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium Advanced Bionics European Research Lab, Groenenborgerlaan 171, 2020 Antwerp, Belgium Email: [email protected]
P. Dykmans Advanced Bionics European Research Lab, Groenenborgerlaan 171, 2020 Antwerp, Belgium Email: [email protected]
F. Vanpoucke Advanced Bionics European Research Lab, Groenenborgerlaan 171, 2020 Antwerp, Belgium Email: [email protected]
P. Bracke Advanced Bionics European Research Lab, Groenenborgerlaan 171, 2020 Antwerp, Belgium Email: [email protected] Received 30 April 2004; Revised 19 November 2004 SPAIDE (sound-processing algorithm integrated development environment) is a real-time platform of Advanced Bionics Corporation (Sylmar, Calif, USA) to facilitate advanced research on sound-processing and electrical-stimulation strategies with the Clarion CII and 90K implants. The platform is meant for testing in the laboratory. SPAIDE is conceptually based on a clear separation of the sound-processing and stimulation strategies, and, in specific, on the distinction between sound-processing and stimulation channels and electrode contacts. The development environment has a user-friendly interface to specify sound-processing and stimulation strategies, and includes the possibility to simulate the electrical stimulation. SPAIDE allows for real-time sound capturing from file or audio input on PC, sound processing and application of the stimulation strategy, and streaming the results to the implant. The platform is able to cover a broad range of research applications; from noise reduction and mimicking of normal hearing, over complex (simultaneous) stimulation strategies, to psychophysics. The hardware setup consists of a personal computer, an interface board, and a speech processor. The software is both expandable and to a great extent reusable in other applications. Keywords and phrases: research platform, sound processing, cochlear implant.
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INTRODUCTION
The technical evolution in cochlear implant processing shows an ever-increasing complexity of both the hardware and software [1, 2]. This technological advance increases performance scores significantly but makes it difficult to implement and experiment with new sound-processing and stimulation strategies. Therefore, research tools that hide most
of the complexity of implant hardware and communication protocols have been developed recently [3, 4, 5]. They allow streaming off-line processed data from PC to implant and support all stimulation features of the implant. However, off-line processing cannot support live input from a microphone. Furthermore, it is cumbersome when an experiment consists of comparing d
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