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:
Feb. 26, 2013
Filed:
Feb. 06, 2009
Nicolas Veau, Le Rouret, FR;
Laurent Le Faucheur, Antibes, FR;
Nicolas Veau, Le Rouret, FR;
Laurent Le Faucheur, Antibes, FR;
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
A system and method for controlling a sound level of a mobile audio device are disclosed herein. In accordance with at least some embodiments, a system includes a transducer, a phase estimator, and a sound level control. The transducer converts an electrical signal applied to the transducer into audible sound. The phase estimator estimates a phase difference between a voltage and a current of the electrical signal applied to the transducer. The sound level control controls the loudness of sound produced by the transducer based, at least in part on the estimated phase difference.