EP 2353302 A1 20110810 - ACOUSTIC VOICE ACTIVITY DETECTION (AVAD) FOR ELECTRONIC SYSTEMS
Title (en)
ACOUSTIC VOICE ACTIVITY DETECTION (AVAD) FOR ELECTRONIC SYSTEMS
Title (de)
AKUSTICHE SPRACHAKTIVITÄTSERFASSUNG (AVAD) FÜR ELEKTRONISCHE SYSTEME
Title (fr)
DÉTECTION ACOUSTIQUE D ACTIVITÉ VOCALE (AVAD) POUR SYSTÈMES ÉLECTRONIQUES
Publication
Application
Priority
- US 2009062129 W 20091026
- US 10842608 P 20081024
Abstract (en)
[origin: WO2010048635A1] Acoustic Voice Activity Detection (AVAD) methods and systems are described. The AVAD methods and systems, including corresponding algorithms or programs, use microphones to generate virtual directional microphones which have very similar noise responses and very dissimilar speech responses. The ratio of the energies of the virtual microphones is then calculated over a given window size and the ratio can then be used with a variety of methods to generate a VAD signal. The virtual microphones can be constructed using either an adaptive or a fixed filter.
IPC 8 full level
H04R 3/00 (2006.01)
CPC (source: EP)
G10L 25/78 (2013.01); G10L 2021/02165 (2013.01); H04R 3/005 (2013.01)
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 MK MT NL NO PL PT RO SE SI SK SM TR
DOCDB simple family (publication)
WO 2010048635 A1 20100429; AU 2009308442 A1 20100429; AU 2016202314 A1 20160505; CA 2741652 A1 20100429; CN 102282865 A 20111214; EP 2353302 A1 20110810; EP 2353302 A4 20160608
DOCDB simple family (application)
US 2009062129 W 20091026; AU 2009308442 A 20091026; AU 2016202314 A 20160413; CA 2741652 A 20091026; CN 200980151512 A 20091026; EP 09822855 A 20091026