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:
Jun. 08, 2004
Filed:
Oct. 17, 2000
Richard W. Harris, Provo, UT (US);
Keith L. Davis, Salt Lake City, UT (US);
Other;
Abstract
The present invention provides a switch method and apparatus that is switchable among a plurality of operational modes by attenuating an input audio signal detected by the apparatus. The apparatus includes a microphone which converts the input audio signal to an input electrical signal (IES), a first memory which stores a threshold value, a second memory which stores at least one parameter set, a selector which is responsive to the first memory and to the IES for selecting a first parameter set as an enabled parameter set, and a signal conditioner coupled to the IES, the signal conditioner being responsive to the IES and to an enabled parameter set for producing a conditioned electrical signal (CES). An alternative switch method and apparatus switchable among a plurality of operational modes by attenuating an input audio signal detected by the apparatus includes a microphone which converts the input audio signal to an IES, a signal envelope detector (SED) coupled to the IES, the SED having a first time constant, wherein the SED produces a SED output in response to the IES, a noise envelope detector (NED) coupled to the IES, the NED having a second time constant that is greater than the first time constant, the NED produces a NED output in response to the IES, a first memory which stores at least one parameter set, a selector which is responsive to the SED output and to the NED output for selecting a first parameter set as an enabled parameter set, and a signal conditioner coupled to the IES, the signal conditioner being responsive to the IES and to an enabled parameter set for producing a CES.