EP 1850328 A1 20071031 - Enhancement and extraction of formants of voice signals
Title (en)
Enhancement and extraction of formants of voice signals
Title (de)
Verstärkung und Extraktion von Sprachsignalformanten
Title (fr)
Renforcement et extraction de formants de signaux de parole
Publication
Application
Priority
- EP 06008675 A 20060426
- EP 06013126 A 20060626
Abstract (en)
A method for extracting the formants of an audio signal comprises the following steps: a.) applying a frequency conversion on an audio signal in order to determine the envelope of the signal, b.) enhancing the formant tracks via filtering in the spectral domain.
IPC 8 full level
G10L 21/02 (2006.01); G10L 25/15 (2013.01)
CPC (source: EP)
G10L 21/0364 (2013.01); G10L 25/15 (2013.01)
Citation (search report)
- [XY] US 4820059 A 19890411 - MILLER JAMES D [US], et al
- [X] US 2005165608 A1 20050728 - SUZUKI MASANAO [JP], et al
- [X] EP 0742548 A2 19961113 - MITSUBISHI ELECTRIC CORP [JP]
- [Y] US 4477925 A 19841016 - AVERY JAMES M [US], et al
- [YA] EP 1600947 A2 20051130 - HONDA RES INST EUROPE GMBH [DE]
- [Y] US 6223151 B1 20010424 - KLEIJN WILLEM BASTIAAN [SE], et al
- [A] US 2005197832 A1 20050908 - VANDALI ANDREW [AU], et al
- [A] RAO P ET AL: "Speech formant frequency estimation: evaluating a nonstationary analysis method", SIGNAL PROCESSING, AMSTERDAM, NL, vol. 80, no. 8, August 2000 (2000-08-01), pages 1655 - 1667, XP004222586, ISSN: 0165-1684
- [A] POTAMIANOS A ET AL: "Speech formant frequency and bandwidth tracking using multiband energy demodulation", ACOUSTICS, SPEECH, AND SIGNAL PROCESSING, 1995. ICASSP-95., 1995 INTERNATIONAL CONFERENCE ON DETROIT, MI, USA 9-12 MAY 1995, NEW YORK, NY, USA,IEEE, US, vol. 1, 9 May 1995 (1995-05-09), pages 784 - 787, XP010625350, ISBN: 0-7803-2431-5
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA HR MK YU
DOCDB simple family (publication)
DOCDB simple family (application)
EP 06013126 A 20060626; JP 2007061984 A 20070312