Patents Assigned to c/o Dolby International AB
  • Enhancing Performance of Spectral Band Replication and Related High Frequency Reconstruction Coding
    Publication number: 20130339023
    Abstract: The present proposes new methods and an apparatus for enhancement of source coding systems utilising high frequency reconstruction (HFR). It addresses the problem of insufficient noise contents in a reconstructed highband, by Adaptive Noise-floor Addition. It also introduces new methods for enhanced performance by means of limiting unwanted noise, interpolation and smoothing of envelope adjustment amplification factors. The present invention is applicable to both speech coding and natural audio coding systems.
    Type: Application
    Filed: August 22, 2013
    Publication date: December 19, 2013
    Applicant: c/o Dolby International AB
    Inventors: Lars G. Liljeryd, Kristofer Kjoerling, Per Ekstrand, Fredrik Henn