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:
Dec. 27, 2005
Filed:
Oct. 05, 2001
Applicants:
Shawn X. Gao, Cerritos, CA (US);
Daniel J. Freed, Santa Monica, CA (US);
Inventors:
Shawn X. Gao, Cerritos, CA (US);
Daniel J. Freed, Santa Monica, CA (US);
Assignee:
House Ear Institute, Los Angeles, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R029/00 ;
U.S. Cl.
CPC ...
Abstract
A hearing test device is capable of presenting a variety of acoustical or vibratory stimuli and can be easily calibrated. Transfer functions for the device are calculated at two different attenuation levels to derive the characteristic impedance and sensitivity of the acoustic or vibratory transducer. The predicted sound pressure level emitted by the transducer may then be calculated as a function of input signal and attenuation.