A time-domain digital simulation of hearing aid response.
A time-domain digital simulation of an in-the-ear (ITE) hearing aid has been developed. The stimulation allows modeling of nonlinear effects such as compression and amplifier distortion in addition to linear processing and acoustics. The simulation includes a microphone, two-channel compression processing, an amplifier with clipping distortion, a receiver, an ear canal and ear drum, and feedback and direct sound transmission through the vent. Simulation results for a linear hearing aid are similar to those obtained for frequency-domain representations of the analog system. Examples of responses for nonlinear systems are also provided.
Center for Research in the Speech and Hearing Sciences, City University of New York, Graduate School, NY 10036.
J M
JM
Kates
D000162:Acoustics; D000703:Analog-Digital Conversion; D004867:Equipment Design; D006310:Hearing Aids; D006801:Humans; D008432:Mathematical Computing; D008962:Models, Theoretical; D012815:Signal Processing, Computer-Assisted