Method and apparatus for testing acoustical devices, including h

Details Method and apparatus for testing acoustical devices, including h Method and apparatus for testing acoustical devices, including h

1994-10-13

1997-12-30

Ramirez, Ellis B.

Boots, shoes, and leggings

G06F 1700

Patent

active

057037973

ABSTRACT:
A method and apparatus for testing hearing aids under condition of actual use where a microprocessor is programmed to generate a warbled pure tone and analyses of the signal as processed by the device. The generated signal and a amplified signal by the hearing aid are analyzed by use of a digital Fourier transform (DFT) to arrive at the transfer function of the device in an setting approximating the environment of use and independent of extrinsic noise.

REFERENCES:
patent: 4885708 (1989-12-01), Yamaguchi et al.

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