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:
Mar. 13, 2007
Filed:
Oct. 01, 2002
Deepen Sinha, Chatham, NJ (US);
Masoud Alghoniemy, Alexandria, EG;
Lin Lin, Bridgewater, NJ (US);
Alex Cabanilla, Middlesex, NJ (US);
Deepen Sinha, Chatham, NJ (US);
Masoud Alghoniemy, Alexandria, EG;
Lin Lin, Bridgewater, NJ (US);
Alex Cabanilla, Middlesex, NJ (US);
iBiquity Digital Corporation, Warren, NJ (US);
Abstract
An efficient coding scheme with higher audio bandwidth and/or better audio quality at lower bitrates, wherein the scheme eliminates long-term and short-term frequency domain correlation in a signal via frequency domain predictors. The coding scheme compresses information consisting of coded low frequency components as well as a parametric representation for the high frequency components based on a non-linear model. Additionally, by working on the frequency domain representations of the signal (such as the MDCT representation which is naturally available to a PAC encoder and decoder), low pass and high pass signal components are easily obtained by windowing the appropriate ranges of frequencies in the signal. Furthermore, the power functions of the signal are replaced by corresponding convolution functions of the same order.