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:
Apr. 01, 2014
Filed:
Sep. 16, 2010
Peter V. Loeppert, Hoffman Estates, IL (US);
Paul Fielding Smith, Barlett, IL (US);
Wei-wen Dai, Elgin, IL (US);
Shawn Beus, Carpentersville, IL (US);
Peter V. Loeppert, Hoffman Estates, IL (US);
Paul Fielding Smith, Barlett, IL (US);
Wei-Wen Dai, Elgin, IL (US);
Shawn Beus, Carpentersville, IL (US);
Knowles Electronics, LLC., Itasca, IL (US);
Abstract
An interface is provided between a transducer and audio processing circuitry. The interface has a switching device coupled to the transducer. The interface also has a first signal path that is selectively coupled to transducer via the switching device and includes a first output, the first signal path being configured to selectively receive input signals from the transducer, and form a first output signal at the first output by amplifying the input signals to provide a first gain. The first output is coupled to the audio processing circuitry. A second signal path is provided that is selectively coupled to the transducer via the switching device and includes a second output. The second gain is selected to be substantially larger than the first gain. The switching device is configured to switch the input signal between the first signal path and the second signal path.