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Audio processing method and system implantted cochlea

A sound and excitation pulse technology, applied in electrotherapy, ear support, ear therapy, etc., can solve problems such as inability to distinguish complex sound tones

Active Publication Date: 2004-09-22
UNIVERSITY OF MELBOURNE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, recent research has shown that users of cochlear implants who use what is known as spectral peak, or SPEAK, one of the most common processing strategies, cannot distinguish certain pitch of complex sounds

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  • Audio processing method and system implantted cochlea
  • Audio processing method and system implantted cochlea
  • Audio processing method and system implantted cochlea

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Embodiment Construction

[0047] Existing hearing aid devices include: a microphone that converts sound into electrical signals; a sound processor that responds to the electrical signals output by the microphone and selectively generates excitation pulses that are applied to the electrodes in the electrode array. In a multichannel cochlear implant, an electrode array is inserted into the cochlea so that different auditory nerve fibers can be stimulated at different locations within the cochlea. Typically, the electrode array includes 22 electrodes. Pulses generated by the sound processor excite different electrodes in the electrode array, depending on the frequency of the electrical signal received from the microphone. Electrodes near the base of the cochlea are excited with electrical pulses from high-frequency sound information, and electrodes near the top are stimulated with electrical pulses from low-frequency sound information. The role of the sound processor is to decompose the input signal into...

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Abstract

An auditory prosthesis device for selectively stimulating electrodes within an auditory prosthesis electrode array, comprising a transducer ( 2 ) for converting a complex acoustic sound into an electrical signal; signal processing means ( 13 ) responsive to an electrical signal and generating a temporal pattern of stimulation pulses to selected electrodes within the electrode array, the stimulation pulses being applied to each electrode at an electrode stimulation rate; feature extraction means ( 14 ) for deriving an estimate of at least one fundamental frequency of the electrical signal; and stimulation pulse adjustment means ( 15 ) for adjusting the stimulation pulses in accordance with the estimated fundamental frequency.

Description

technical field [0001] The present invention generally relates to methods of generating electrical stimuli applied to an array of hearing aid electrodes forming part of a cochlear implant. Background technique [0002] Cochlear implants are now an optional clinical device for those with profound hearing loss. A typical implant consists of inner and outer parts. The inner part includes the electrode array implanted in the cochlea, as well as auxiliary electronics that provide electrical stimulation to the still-living auditory neurons. The external device is a sound processor that converts the received sound signal into appropriate electrical excitation pulses to be applied to the electrode array. [0003] Cochlear implant technology has advanced to the point where the average user can expect to understand conversations in quiet environments without resorting to lip-reading. However, cochlear implants do not provide a satisfactory hearing experience when listening to speec...

Claims

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Application Information

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IPC IPC(8): A61N1/05A61N1/36H04R25/02
CPCA61N1/36032A61N1/36038
Inventor 休·麦克德莫特科利特·麦凯
Owner UNIVERSITY OF MELBOURNE
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