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:
Oct. 09, 2007
Filed:
Sep. 30, 2005
Peter M. Pavlov, Plantation, FL (US);
Jason D. Mcintosh, Weston, FL (US);
Graeme P. Johnson, Plantation, FL (US);
Peter M. Pavlov, Plantation, FL (US);
Jason D. McIntosh, Weston, FL (US);
Graeme P. Johnson, Plantation, FL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
The invention concerns a method () and system () for suppressing receiver audio regeneration. The method () includes the steps of receiving a communication signal (), at a Radio Frequency (RF) unit (), demodulating the communication signal to an audio signal (), monitoring a volume level of the audio signal (), and shifting the pitch of the audio signal when the volume level reaches a predetermined threshold (), and playing the pitch-shifted audio signal out of a speaker to produce a pitch-shifted acoustic signal (). The method can shift the pitch of the audio signal to produce a pitch-shifted acoustic signal with signal properties suppressing regeneration of the acoustic signal onto the audio signal at the RF unit. The amount of pitch-shifting can be a function of the volume level.