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. 25, 1996
Filed:
Oct. 04, 1994
Applicant:
Inventor:
Yoshiyuki Yoshizumi, Nara, JP;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B / ;
U.S. Cl.
CPC ...
381 94 ; 381 56 ; 381 46 ; 381 47 ;
Abstract
An apparatus for enhancing speech sounds includes an input circuit for receiving speech sounds and for converting said speech into a speech signal; a rectifier for rectifying the speech signal; a first time constant circuit for applying a first time constant to the output of the rectifier; a second time constant circuit for applying a second time constant to the output of the rectifier; a divider for obtaining the ratio of the output of the first time constant circuit to the output of the second time constant circuit; a multiplier for multiplying the speech signal by the ratio obtained by the divider; and an output circuit for converting the output of the multiplier into speech sounds.