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:
Nov. 23, 2004
Filed:
Jan. 02, 2003
Applicant:
Inventor:
William N. Buchele, Los Gatos, CA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K 5/00 ;
U.S. Cl.
CPC ...
H03K 5/00 ;
Abstract
An adaptive speech filter ( ) for conditioning speech signals to increase signal to noise ratio in a relatively noisy environment. The adaptive speech filter ( ) has a preamp circuit ( ), a high pass adaptive filter circuit ( ), an output buffer circuit ( ), a peak detector amplifier/filter circuit ( ), a peak detector circuit ( ) and a voltage regulator circuit ( ), embodied in an application specific integrated circuit ( ). The adaptive speech filter ( ) is intended for input to telephones, radios, and the like.