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. 18, 2001
Filed:
Mar. 17, 2000
Gregory R. Shaw, Calgary, CA;
Mead C. Killion, Elk Grove Village, IL (US);
Etymotic Research, Inc., Elk Grove Village, IL (US);
Abstract
A hearing test device and artifact rejection method are disclosed. The device and method may be used in, for example, distortion product otoacoustic emissions (DPOAE) testing. In one embodiment, the device presents a plurality of stimuli into the ear canal of a test subject, and receives responses from the ear canal. Depending on the noise power of each response received, the response is placed in one of a plurality of buffers or is discarded. The combination of buffers that yields the lowest noise power is then selected. The selected combination of buffers may then be used to calculate a signal to noise ratio, which may be used to determine whether the test has been passed or failed.