EP 1212751 A1 20020612 - METHOD FOR SUPPRESSING SPURIOUS NOISE IN A SIGNAL FIELD
Title (en)
METHOD FOR SUPPRESSING SPURIOUS NOISE IN A SIGNAL FIELD
Title (de)
VERFAHREN ZUR UNTERDRÜCKUNG VON STÖRRAUSCHEN IN EINEM SIGNALFELD
Title (fr)
PROCEDE D'ATTENUATION DE BRUITS PARASITES DANS UN CHAMP DE SIGNAL
Publication
Application
Priority
- AT 0000230 W 20000828
- AT 155999 A 19990910
Abstract (en)
[origin: WO0120598A1] The invention relates to a method for suppressing spurious noise in a signal field (S2), e.g. in a speech signal spectrum, containing a plurality of signal components which each adopt a value of a signal level and are assigned to an ordinate area (T, F). According to said method, the distribution function (P2(E)) of the signal field is first determined. As a function of the signal level, said distribution function indicates the size of the fraction of those signal components whose signal level is lower than their argument value (E). The signal level values are then modified, based on a comparison between the distribution function (P2(E)) and a reference distribution function which has been obtained from a distribution function that was determined for a set of reference models, whereby the sequence of signal components remains unchanged with regard to their energy level and signal components whose original signal levels are identical, are assigned the same modified signal levels.
IPC 1-7
IPC 8 full level
G10L 15/00 (2006.01); G10L 15/20 (2006.01); G10L 21/02 (2006.01); G10L 21/0208 (2013.01)
CPC (source: EP US)
G10L 21/0208 (2013.01 - EP US)
Citation (search report)
See references of WO 0120598A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 0120598 A1 20010322; AT 408286 B 20011025; AT A155999 A 20010215; DE 50008440 D1 20041202; EP 1212751 A1 20020612; EP 1212751 B1 20041027; JP 2003509730 A 20030311; US 2002173276 A1 20021121
DOCDB simple family (application)
AT 0000230 W 20000828; AT 155999 A 19990910; DE 50008440 T 20000828; EP 00958032 A 20000828; JP 2001524096 A 20000828; US 9423702 A 20020308