STFT ALGORITHM FOR IMPLEMENTATION OF AUDITORY COMPENSATION IN HEARING AIDS

The paper presents the work on auditory compensation (also known as audiogram equalizer or loudness compensation) implemented with the help of Short Time Fourier Transform (STFT) algorithm. Auditory compensation is an important feature of the hearing aid. The hearing aid's primary functionality is to compensate the loss in the hearing level of a patient by amplifying the audio signals depending on the frequency band. The amount of amplification required for an individual is determined by the Audiometry test performed by audiologist. The STFT algorithm is employed to determine the frequency range of audio signal which is to be selectively amplified as per the audiogram. The present work uses Verilog language to implement STFT algorithm. The entire system is developed on Zynq Evaluation and Development Board (Zedboard) using Vivado.