EP 2158588 B1 20101013 - SPECTRAL SMOOTHING METHOD FOR NOISY SIGNALS
Title (en)
SPECTRAL SMOOTHING METHOD FOR NOISY SIGNALS
Title (de)
SPEKTRALGLÄTTUNGSVERFAHREN VON VERRAUSCHTEN SIGNALEN
Title (fr)
PROCÉDÉ DE FILTRAGE SPECTRAL DE SIGNAUX PARASITÉS
Publication
Application
Priority
- DE 2008001047 W 20080625
- DE 102007030209 A 20070627
Abstract (en)
[origin: US2010182510A1] A smoothing method for suppressing fluctuating artifacts in the reduction of interference noise includes the following steps: providing short-term spectra for a sequence of signal frames, transforming each short-term spectrum by way of a forward transformation which describes the short-term spectrum using transformation coefficients that represent the short-term spectrum subdivided into its coarse and fine structures; smoothing the transformation coefficients with the respective same coefficient indices by combining at least two successive transformed short-term spectra; and transforming the smoothed transformation coefficients into smoothed short-term spectra by way of a backward transformation.
IPC 8 full level
G10L 21/00 (2006.01); G06T 5/00 (2006.01); G10L 21/02 (2006.01); G10L 21/0208 (2013.01); G10L 25/24 (2013.01); G10L 25/27 (2013.01)
CPC (source: EP US)
G10L 21/0208 (2013.01 - EP US); G10L 25/24 (2013.01 - EP US); G10L 25/27 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
DOCDB simple family (publication)
US 2010182510 A1 20100722; US 8892431 B2 20141118; AT E484822 T1 20101015; DE 102007030209 A1 20090108; DE 502008001543 D1 20101125; DK 2158588 T3 20110207; EP 2158588 A1 20100303; EP 2158588 B1 20101013; WO 2009000255 A1 20081231; WO 2009000255 A9 20100514
DOCDB simple family (application)
US 66552608 A 20080625; AT 08784249 T 20080625; DE 102007030209 A 20070627; DE 2008001047 W 20080625; DE 502008001543 T 20080625; DK 08784249 T 20080625; EP 08784249 A 20080625