The Study Of Loudness Compensation Technology For Hearing Aid Based On DSP

For the country’s ageing rapidly increasing, hearing reasons to beconcerned about the elderly and domestic brand of hearing aid market are almostentirely foreign occupation, making research of the digital hearing aidtechnology the immediate problem. Therefore, this article focuses on languagestudy on sound compensation technology and implementation.This article combines characteristics of speech signal and basics of speechsignal processing, on the premise of the current compression technology,presented based on multi-channel filtering theory of loudness compensationalgorithm. For hearing impairment in the elderly patients with auditory dynamicrange, based on the appropriate hearing aid fitting for loudness compensationformulas that patients gain curve, known to the appropriate size of the gain forthe voice channel, will analyze the channel voice data is multiplied by thecorresponding frequency gain comprehensive, respectively, will be compensatedafter the Speech Data. By MATLAB simulation, the algorithm can achieve voiceloudness compensation. Finally TMS320V5509A based platform for digitalhearing aids, including software and hardware implementation, the algorithmachieves the effect of compensation on the platform of DSP hearing aidoperation system.The band segmentation algorithm for speech signal, enabling more accuratechannel gain compensation, while reducing time to achieve perfect for voiceloudness compensation, can be applied to your hearing aid devices.