The Master Hearing Aid

James R. Curran, Jason A. Galster
2013 Trends in Amplification  
As early as the 1930s the term Master Hearing Aid (MHA) described a device used in the fitting of hearing aids. In their original form, the MHA was a desktop system that allowed for simulated or actual adjustment of hearing aid components that resulted in a changed hearing aid response. Over the years the MHA saw many embodiments and contributed to a number of rationales for the fitting of hearing aids. During these same years, the MHA was viewed by many as an inappropriate means of
more » ... g hearing aids; the audio quality of the desktop systems was often superior to the hearing aids themselves. These opinions and the evolution of the MHA have molded the modern perception of hearing aids and the techniques used in the fitting of hearing aids. This article reports on a history of the MHA and its influence on the fitting of hearing aids. Keywords hearing aid, master hearing aid, audiology Note. This instrument featured a pure tone audiometer, masking, speech testing, and the choice of several optional receivers.
doi:10.1177/1084713813486851 pmid:23686682 pmcid:PMC4070612 fatcat:qoslyqqqhvgyteemqqxbqcbwgm