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:
Dec. 04, 2012
Filed:
Sep. 09, 2008
Applicants:
Esfandiar Zavarehei, Cambridge, GB;
David Hargreaves, Cambridge, GB;
Inventors:
Esfandiar Zavarehei, Cambridge, GB;
David Hargreaves, Cambridge, GB;
Assignee:
Cambridge Silicon Radio Limited, Cambridge, Cambridgeshire, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G10L 19/02 (2006.01); G10L 19/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Methods of encoding a signal using a perceptual model are described in which a signal to mask ratio parameter within the perceptual model is tuned. The signal to mask ratio parameter is tuned based on a function of the bitrate of the part of the signal which has already been encoded and the target bitrate for the encoding process. The tuned signal to 5 mask ratio parameter is used to compute a masking threshold for the signal which is then used to quantise the signal.