EP 0310636 B1 19920909 - DISTANCE MEASUREMENT CONTROL OF A MULTIPLE DETECTOR SYSTEM
Title (en)
DISTANCE MEASUREMENT CONTROL OF A MULTIPLE DETECTOR SYSTEM
Publication
Application
Priority
US 3429787 A 19870403
Abstract (en)
[origin: WO8807740A1] Apparatus for detecting a fundamental frequency in speech utilizing a plurality of voiced detectors and selecting (104, 105) one of those detectors to make the voicing decision utilizing distance measurement values with each value generated by one of the voiced detectors. The voiced detector selected is the one which generated the best distance measurement value. The distance measurement value may be the Mahalanobis distance value or Hotelling's two-sample T<2> statistic. Two types of voiced detectors are disclosed: statistical voiced detectors (103) and discriminant voiced detectors (107). The disclosed statistical voiced detector adapts to changing speech environments by detecting changes in the voice environment in response to classifiers that define certain attributes of the speech.
IPC 1-7
IPC 8 full level
G10L 11/00 (2006.01); G10L 11/04 (2006.01); G10L 11/06 (2006.01); G10L 15/02 (2006.01); G10L 25/93 (2013.01)
CPC (source: EP)
G10L 25/93 (2013.01)
Citation (examination)
- IEEE Transactions on Acoustics, Speech, and Signal Processing, volume ASSP-24, no. 3, June 1976, (New York, US), B.S. Atal et al.: "A pattern recognition approach to voiced-unvoiched-silence classification with applications to speech recognition", pages 201-212 see page 201, right-hand column, lines 14-26
- ICASSP 86 Proceedings, IEEE-IECEJ-ASJ International Conference on Acoustics, Speech, and Signal Processing, 7-11 April 1986, Tokyo, Japan, volume 1 of 4, IEEE, (New York, US), D.P. Prezas et al.: "Fast and accurate pitch detection using pattern recognition and adaptive time-domain analysis", pages 109-112 see pages 110, 111: "Final voicing and pitch"
Designated contracting state (EPC)
AT BE DE FR GB IT NL
DOCDB simple family (publication)
WO 8807740 A1 19881006; AT E80488 T1 19920915; AU 1242988 A 19881102; AU 602957 B2 19901101; CA 1336212 C 19950704; DE 3874471 D1 19921015; DE 3874471 T2 19930225; EP 0310636 A1 19890412; EP 0310636 B1 19920909; HK 108993 A 19931022; JP H01502853 A 19890928; JP H0795238 B2 19951011; SG 59693 G 19930709
DOCDB simple family (application)
US 8800123 W 19880111; AT 88901684 T 19880111; AU 1242988 A 19880111; CA 562766 A 19880329; DE 3874471 T 19880111; EP 88901684 A 19880111; HK 108993 A 19931014; JP 50156088 A 19880111; SG 59693 A 19930507