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AssigneeHamamatsu Foundation for Science and Technology Promotion
InventorsShigeyoshi Kitazawa, Shinya Kiriyama, Erdenebat Dashtseren, Satoshi Iwasaki
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A cochlear implant and a method of speech conversion in the cochlear implant which can provide a user with more natural-sounding reproduced speech and can regenerate a natural variation at a value near the natural period of respective channels. A method of speech conversion in a cochlear implant in which an electrode array of a plurality of electrodes is arranged within a cochlea, electrically stimulation pulses are generated by transmitting speech information sampled via a microphone to the electrodes, and the acoustic sense is reinforced by transmitting the speech information to the cochlea as electrically stimulation pulses. The method can include discriminating the speech information into respective frequency bands using a plurality of band pass filters within a signal frame being a predetermined sampling period, adding an information of a channel corresponding to the frequency band to the speech information, adjusting the number of the stimulation pulses to a frequency allowed in one channel by leaving in respective channels a speech information having a higher signal level in one channel, adjusting the number of the stimulation pulses to a frequency allowed in all channels by leaving a speech information having a higher signal level in all speech information left in respective channels, and generating the stimulation pulses by providing the left speech information to the electrode corresponding to the channel.
A method of sound conversion in a cochlear implant in which an electrode array of a plurality of electrodes is arranged within a cochlea, electrical stimulation pulses are generated by transmitting sound information sampled via a microphone to the electrodes, and the acoustic sense o the user is reinforced by transmitting the sound information to the cochlea as electrical stimulation pulses, the method comprises steps of:
A cochlear implant comprising an electrode array of a plurality of electrodes configured to be arranged within a cochlea, electrical stimulation pulse module configured to generate electrical stimulation pulses corresponding to sound sampled via a microphone and to transmit the pulses to the electrodes, whereby the acoustic sense of a user is reinforced by transmitting the sound information to the cochlea as electrical stimulation pulses, the cochlear implant further comprising:
A cochlear implant comprising an electrode array of a plurality of electrodes configured to be arranged within a cochlea, electrical stimulation pulse module configured to generate electrical stimulation pulses corresponding to sound sampled via a microphone and to transmit the pulses to the electrodes, whereby the acoustic sense of a user is reinforced by transmitting the sound information to the cochlea as electrical stimulation pulses, the cochlear implant further comprising:
Dependencies are inferred from the claim text.