The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 02, 2018
Filed:
Jun. 10, 2016
Interacoustics A/s, Middelfart, DK;
Kren Rahbek Nørgaard, Middelfart, DK;
INTERACOUSTICS A/S, Middelfart, DK;
Abstract
A method for carrying out acoustic Thevenin calibration of probes or hearing aids comprises presenting a plurality of different acoustic loads, one acoustic load at a time, to the output of the probe or hearing aid, the source characteristic of which is to be determined. Each of the acoustic loads is characterized by a known acoustic input impedance and an additional frequency dependent complex correction factor ΔZ(f). By applying the method according to the present disclosure the relationship between the sound pressure and the volume velocity at the input of the acoustic load generated by the probe can be determined for a plurality of frequencies, thereby obtaining the substantially correct source characteristic of the probe or a hearing aid. Specifically the acoustic loads are the input impedance of respective waveguides or other suitable cavities, and the known acoustic input impedances are determined analytically. The correction factors are adjusted individually for each waveguide or cavity, for instance in an iterative process.
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