Simulating Hearing Loss Using a Transmission Line Cochlea Model

A back transformation of a linear transmission line cochlea model was developed giving rise to a new method to simulate hearing loss. To make the back transformation possible an energy reflection problem was corrected in the model of the cochlea. An inverse filter, digital signal processing, approach in the frequency domain is used for the back transformation. To effectively simulate hearing loss the inverse filter uses the entire cochlear output which is systematically combined to form the resynthesized sound. Using the inverse filter of a normal model on the output from a model that simulates a damaged ear allows for sound to be created as a hearing disabled person would hear it. Results show that the effect of damage in one region of the cochlea propagates to other parts of the cochlea thereby being a more comprehensive hearing loss simulator than traditional digital signal processing methods. The developed techniques introduce a more accurate method to simulate hearing loss and form a solid base for future work on simulating hearing loss.

Subject

Simulating Hearing Loss
Transmission Line Cochlea Model
Cochlea Model

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Student theses

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master thesis

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SHLReportLKoopFINALVersionS.pdf

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