Method for the recording of acoustic parameters for the...

Details Method for the recording of acoustic parameters for the... Method for the recording of acoustic parameters for the...

2005-01-04

2005-01-04

Hindenburg, Max F. (Department: 3736)

Surgery

Diagnostic testing

Ear or testing by auditory stimulus

Reexamination Certificate

active

06837857

ABSTRACT:
Acoustic parameters of an ear are recorded by measuring the impedance of the ear canal. A first pressure microphone measures the sonic pressure. A second pressure microphone measures the sonic pressure through a calibrated acoustic resistance. The sound energy flux is determined by the difference between the measured sonic pressures. The impedance is calculated from these results.

REFERENCES:
patent: 4289143 (1981-09-01), Canavesio et al.
patent: 4809708 (1989-03-01), Geisler et al.
patent: 5526819 (1996-06-01), Lonsbury et al.
patent: 5792072 (1998-08-01), Keefe
patent: 6118875 (2000-09-01), M.o slashed.ller et al.

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