Hearing aids are devices used by hearing impaired persons to counterbalance the hearing loss. They cannot completely overcome the perceptual distortions caused by a hearing loss but assist the user to interpret speech. Continuous efforts are being made to overcome these distortions and improve the hearing experience. The recent advancements include the introduction of digital binaural hearing aids which consist of state of the art DSP algorithms and cutting-edge hardware. The focus of this paper is on software simulation of various DSP algorithms used in binaural hearing aids. Noise cancellation, controlled amplification, frequency transportation, spatial estimation and power compression algorithms are explained and simulation results for the same are specified
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