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:
Oct. 24, 1995
Filed:
Aug. 17, 1994
Applicant:
Inventor:
Tsunao Hasegawa, Tokorozawa, JP;
Assignee:
Pioneer Electronic Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
369124 ; 3647241 ;
Abstract
A PCM digital audio signal playback apparatus is provided for multiplying a PCM digital audio signal to n times the sampling rate, interpolating extra sampling points with zero signals, and spline-function interpolating with an FIR digital filter. Accordingly, a sound reproduced from the output audio signal of the apparatus will be more natural as compared with common high-cut filtering with a high-cut filter.