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A new portable sound processor for the University of Melbourne/Nucleus Limited multielectrode cochlear implant
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1992
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Mini Speech ProcessorSmsp UsersBiomedical EngineeringSpeech RecognitionHearing AidsPhoneticsNew ProcessorCochlear Implant CommunicationHealth SciencesSpeech PerceptionAudiologyHuman HearingSpeech TechnologyHearing LossBioelectronicsAuditory PhysiologySpeech ProcessingCochlear ImplantArtsCochlear Implantation
A new processor, called the spectral maxima sound processor (SMSP), has been developed for the University of Melbourne/Nucleus Limited multielectrode cochlear implant. The SMSP uses a 16‑channel bandpass filterbank to select the six strongest spectral peaks every 4 ms and stimulates the corresponding electrodes, and its performance is being compared to the Mini Speech Processor. Early users of the SMSP achieved significantly higher vowel, consonant, and word recognition scores than with the Mini Speech Processor.
A new processor, called the spectral maxima sound processor (SMSP), has been developed for the University of Melbourne/Nucleus Limited multielectrode cochlear implant. The SMSP analyses sound signals by means of a bandpass filterbank having 16 channels which are allocated tonotopically to the implanted electrodes. Every 4 ms, typically, the six channels with the largest amplitudes are selected, and six corresponding electrodes are activated. In an ongoing study the performance of the SMSP is being compared with that of the Mini Speech Processor (MSP). Some results of speech perception tests from the first two SMSP users are presented, in which scores for the recognition of vowels, consonants, and words all showed significant increases over the corresponding MSP scores.