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. 11, 2005
Lars Gustaf Liljeryd, Solna, SE;
Kristofer Kjörling, Solna, SE;
Per Ekstrand, Stockholm, SE;
Fredrik Henn, Bromma, SE;
Lars Gustaf Liljeryd, Solna, SE;
Kristofer Kjörling, Solna, SE;
Per Ekstrand, Stockholm, SE;
Fredrik Henn, Bromma, SE;
Coding Technologies Sweden AB, Stockholm, SE;
Abstract
The present invention provides a new method and an apparatus for spectral envelope encoding. The invention teaches how to perform and signal compactly a time/frequency mapping of the envelope representation, and further, encode the spectral envelope data efficiently using adaptive time/frequency directional coding. The method is applicable to both natural audio coding and speech coding systems and is especially suited for coders using SBR [WO 98/57436] or other high frequency reconstruction methods.