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. 27, 1982
Filed:
Nov. 07, 1979
Applicant:
Inventors:
Toshikazu Yoshimi, Tokorozawa, JP;
Hiroshi Ono, Tokyo, JP;
Assignee:
Pioneer Electronic Corporation, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03F / ; H03G / ;
U.S. Cl.
CPC ...
330126 ; 333 / ;
Abstract
An audio amplifier device is disclosed by which an audio signal is separated in frequency into three or more signal components and the high frequency component or components and/or the low frequency component or components are attenuated automatically while a middle frequency component is amplified without attenuation.