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:
May. 15, 1990
Filed:
Oct. 26, 1988
Applicant:
Inventor:
Yoshitomo Nakano, Tokyo, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H04R / ;
U.S. Cl.
CPC ...
381 56 ; 381 46 ; 381110 ;
Abstract
A threshold level for determining whether an input audio signal is a speech or non-speech signal in a voice operated recorder is changed in accordance with the ratio of the non-speech duration of the input audio signal to a predetermined period of time so as to decrease the influence of ambient noise on the judgement between speech and non-speech signals as made by the voice operated recorder.