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. 23, 2002
Filed:
Jul. 14, 1998
Mark Jeffrey Foladare, Kendall Park, NJ (US);
Shelley B. Goldman, East Brunswick, NJ (US);
David Phillip Silverman, Somerville, NJ (US);
Shaoqing Q. Wang, Middletown, NJ (US);
Robert S. Westrich, Middletown, NJ (US);
AT&T Corp., New York, NY (US);
Abstract
A method and system for reducing background noise during a telephone call. When a caller begins dialing a telephone number, the system receives an ambient noise level measured near the caller's telephone. The system then computes an inverse noise waveform, which corresponds to the received ambient noise level. The inverse noise waveform is then transmitted along the same telephone line used by the completed call. The inverse noise waveform reduces the ambient background noise from the caller's location for the duration of the telephone call.