Electrical audio signal processing systems and devices – Monitoring/measuring of audio devices – Testing of hearing aids
Patent
1988-04-13
1989-05-02
Isen, Forester W.
Electrical audio signal processing systems and devices
Monitoring/measuring of audio devices
Testing of hearing aids
73585, H04R 2900
Patent
active
048275247
ABSTRACT:
A device is disclosed for holding a probe tube in the ear canal of a person's ear. The device includes two members. The first member has a clip for clipping the first member to an ear lobe, and a first magnetic member coupled to the clip. The second member has a microphone coupled to a probe tube, and a housing for holding the probe tube at fixed position relative to the housing. The microphone generates amplified signals corresponding to sound conducted by the probe tube. In addition, a second magnetic member is coupled to the housing of the second member so that the second member can be held in a selected position relative to the first member by the magnetic attraction of the first and second magnetic members. The first and second magnetic members preferably each have a flat surface which enables the relative positions of the first and second members to be adjusted both angularly and laterally.
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Madsen, "Insertion Gain Optimization", Hearing Instruments, vol. 37, No. 1, pp. 28-32 (1986).
Preves and Sullivan, "Sound Field Equalization for Real Ear Measurements with Probe Microphones", Hearing Instruments, vol. 38, No. 1, pp. 28-32 (1987).
Dillon and Murray, "Accuracy of Twelve Methods for Estimating the Real Ear Gain of Hearing Aids", Ear and Hearing, vol. 8, No. 1, Williams & Wilkins Co. (1987).
Diaphon Development AB
Isen Forester W.
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