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Design and Implementing an Evaluator Platforn for Cochlear Implent Devices

Asadian, Saeed | 2021

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 54365 (05)
  4. University: Sharif University of Technology
  5. Department: Electrical Engineering
  6. Advisor(s): Hajipour, Sepideh; Molaei, Behnam
  7. Abstract:
  8. The auditory system with its unique features has been considered by researchers in the past and its various parts from the outside of the body to its internal parts have been studied. The auditory nervous system, as the most important part of the auditory system, is responsible for receiving and processing information from the ear. The auditory system has different anatomical and physiological characteristics. The result of these characteristics is processing power in the field of time and frequency, which has received more attention in this dissertation. This processing power is most evident in the central auditory nervous system. This section includes nerve neurons and synapses from the ear to the prefrontal cortex. Cochlear implant is an electronic device that restores part of hearing to the deaf through electrical stimulation of the inner ear. In effect, the device shortens the normal human auditory pathway and directly stimulates the sensory cells of the auditory nerve by sending an electrical signal to an array of electrodes implanted by cochlear surgery. Subjective tests are performed on cochlear implant patients to assess how well this process of stimulating neurons can transmit the received sound conceptually and without noise. Finding people with these conditions, subjectivity of the test identity, calibration of the system every time are some of the problems that have made this test complicated. Most methods of sound recovery, regardless of how the hearing system works, recover the sound, but in this dissertation, we intend to model the hearing system and also reconstruct the sound using a spectrogram. Obtained from the auditory system model, bring the recovered sound closer to the sound heard using a cochlear implant system
  9. Keywords:
  10. Auditory System ; Sound Reconstruction ; Cochlear Implant ; Spectrogram ; Deafness

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