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:
Mar. 21, 2006
Filed:
Dec. 30, 2002
Applicant:
Richard Lance Willis, Lauderhill, FL (US);
Inventor:
Richard Lance Willis, Lauderhill, FL (US);
Assignee:
Motorola, Inc., Plantation, FL (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H04R 29/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A test signal is generated in a device having a sound tube and a microphone. An acoustic wave is generated in the sound tube from the test signal. The acoustic wave is received at the microphone to estimate an acoustic pressure response. The length of the sound tube is estimated by a frequency of at least one peak in the acoustic pressure response.