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:
Sep. 28, 1999
Filed:
May. 17, 1996
Applicant:
Inventors:
Thomas John Janiszewski, Clinton, NJ (US);
Michael D Turner, Madison, NJ (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G10L / ;
U.S. Cl.
CPC ...
704207 ; 704205 ; 704206 ;
Abstract
A pitch gain of the adaptive codebook portion of a vocoder's encoder is monitored to determine when an instability condition is about to occur by examining a pitch gain value and an averaged pitch gain value. When an instability is likely, the output of a gain control unit is set to an adaptive gain control value. When an instability is unlikely, the gain control unit passes the pitch gain to its output unmodified.