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. 11, 2011
Filed:
Jun. 24, 2009
Lars G. Liljeryd, Solna, SE;
Kristofer Kjoerling, Solna, SE;
Per Ekstrand, Stockholm, SE;
Fredrik Henn, Bromma, SE;
Lars G. Liljeryd, Solna, SE;
Kristofer Kjoerling, Solna, SE;
Per Ekstrand, Stockholm, SE;
Fredrik Henn, Bromma, SE;
Coding Technologies Sweden AB, Stockholm, SE;
Abstract
Methods and an apparatus for enhancement of source coding systems utilizing high frequency reconstruction (HFR) are introduced. The problem of insufficient noise contents is addressed in a reconstructed highband, by using Adaptive Noise-floor Addition. New methods are also introduced for enhanced performance by means of limiting unwanted noise, interpolation and smoothing of envelope adjustment amplification factors. The methods and apparatus used are applicable to both speech coding and natural audio coding systems.