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:
Nov. 10, 2009
Filed:
Apr. 14, 2004
Klaus Geiger, Heubach, DE;
Christian Glandier, Esslingen, DE;
Rolf Helber, Schorndorf, DE;
Bruel & Kjaer Sound & Measurement A/S, Naerum, DK;
Abstract
The method comprises generating an acoustical volume velocity Q in the listening position, measuring a response quantity p, such as sound or vibration, at a suspected source position resulting from the volume velocity Q, and determining the acoustical transfer impedance Zas the response quantity p divided by the acoustical volume velocity Q, Z=p/Q. According to the invention the acoustical volume velocity Q is generated using a simulator () simulating acoustic properties of at least a head of a human being, the simulator comprising a simulated human ear () with an orifice in the simulated head and a sound source () for outputting the acoustical volume velocity Q through the orifice. The output volume velocity Q from the orifice of an ear is estimated from measurements with two microphones inside the corresponding ear canal.