On October 26, 2006, Coding Technologies had this patent application published for its coding techniques. XM uses Coding Technologies for its CODEC.
United States Patent Application
Kjorling; Kristofer ; et al.
October 26, 2006
Envelope shaping of decorrelated signals
The envelope of a decorrelated signal derived from an original signal can be shaped without introducing additional distortion, when a spectral flattener is used to spectrally flatten the spectrum of the decorrelated signal and the original signal prior to using the flattened spectra for deriving a gain factor describing the energy distribution between the flattened spectra, and when the so derived gain factor is used by an envelope shaper to timely shape the envelope of the decorrelated signal.
Kjorling; Kristofer; (Solna, SE) ; Herre; Jurgen; (Buckenhof, DE) ; Disch; Sascha; (Furth, DE) ; Villemoes; Lars; (Jarfalla, SE)
Correspondence Name and Address:
LERNER GREENBERG STEMER LLP
P O BOX 2480
Assignee Name and Adress:
Coding Technologies ABFraunhofer Gesellschaft zur Forderung der angewandten Forschung e.V.
April 12, 2006
U.S. Current Class:
U.S. Class at Publication:
H03G 5/00 20060101 H03G005/00
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