EP 2980800 A1 20160203 - Noise level estimation
Title (en)
Noise level estimation
Title (de)
Geräuschpegelschätzung
Title (fr)
Estimation du niveau de bruit
Publication
Application
Priority
EP 14179096 A 20140730
Abstract (en)
Embodiments of the present invention relate to noise level estimation. A method for noise level estimation is disclosed. The method comprises responsive to an increase of a signal level of a noise signal, calculating an impulsive noise probability of the noise signal, the impulsive noise probability indicating a likelihood that the noise signal is an impulsive noise. The method also comprises determining a variable smoothing factor for noise level estimation based on the impulsive noise probability, the variable smoothing factor being associated with a previous estimated level of the noise signal. The method further comprises smoothing the noise signal with the variable smoothing factor so as to determine a current estimated level of the noise signal. Corresponding system and computer program product are also disclosed.
IPC 8 full level
G10L 21/0216 (2013.01)
CPC (source: EP)
G10L 21/0216 (2013.01); G10L 21/0264 (2013.01); G10L 21/034 (2013.01); G10L 25/03 (2013.01)
Citation (search report)
- [XYI] EP 2234105 A1 20100929 - HARMAN BECKER AUTOMOTIVE SYS [DE]
- [X] US 2010239098 A1 20100923 - CHRISTOPH MARKUS [DE]
- [Y] EP 2149879 A1 20100203 - FUJITSU LTD [JP]
- [A] WO 2013006175 A1 20130110 - NUANCE COMMUNICATIONS INC [US], et al
- [A] EP 2750130 A1 20140702 - NXP BV [NL]
- [A] GODSILL S J ET AL: "STATISTICAL RECONSTRUCTION AND ANALYSIS OF AUTOREGRESSIVE SIGNALS IN IMPULSIVE NOISE USING THE GIBBS SAMPLER", IEEE TRANSACTIONS ON SPEECH AND AUDIO PROCESSING, IEEE SERVICE CENTER, NEW YORK, NY, US, vol. 6, no. 4, 1 July 1998 (1998-07-01), pages 352 - 372, XP000785365, ISSN: 1063-6676, DOI: 10.1109/89.701365
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
DOCDB simple family (application)
EP 14179096 A 20140730