EP 0167364 A1 19860108 - Speech-silence detection with subband coding.
Title (en)
Speech-silence detection with subband coding.
Title (de)
Sprachpausenbestimmung mit Teilbandkodierung.
Title (fr)
Détection parole-silence avec codage par sous-bandes.
Publication
Application
Priority
US 62858384 A 19840706
Abstract (en)
Speech detection is accomplished in conjunction with two-band subband encoding. A detection statistic T (i tau 0), used to estimate the short-term speech energy, is developed from energy estimates made in each subband. A speech presence energy threshold lambda ON a speech silence energy threshold lambda OFF and lambda OFF are computed which adapt to the long-term speech level. The detection statistic is compared to the thresholds to make a decision concerning the presence or absence of speech. Also disclosed are considerations for extrapolating the detection to result in an arrangement with more than two subbands.
IPC 1-7
IPC 8 full level
G10L 19/00 (2006.01); G10L 11/00 (2006.01); G10L 11/02 (2006.01); H03M 7/30 (2006.01); H04B 14/04 (2006.01)
CPC (source: EP)
G10L 25/78 (2013.01)
Citation (search report)
- [A] EP 0110467 A1 19840613 - PHILIPS KOMMUNIKATIONS IND AG [DE], et al
- [A] DE 3235279 A1 19830421 - NISSAN MOTOR [JP]
- [A] FR 2451680 A1 19801010 - SOUMAGNE JOEL
- [A] IEEE TRANSACTIONS ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING, vol. ASSP-28, no. 5, October 1980, pages 550-561, IEEE, New York, US; B.V. COX et al.: "Nonparametric rank-order statistics applied to robust-voiced-unvoiced-silence classification"
- [A] TELECOMMUNICATIONS AND RADIO ENGINEERING, vol. 4, April 1965, pages 70-72, Washington, US; V.N. TETEREV: "A combinatorial method of detecting speech signals in a background of smooth noise"
- [A] IEEE TRANSACTIONS ON COMMUNICATIONS, vol. COM-24, no. 5, May 1976, pages 563-567, New York, US; R.W. SCHAFER et al.: "Detecting the presence of speech using ADPCM coding"
Designated contracting state (EPC)
DE FR
DOCDB simple family (publication)
DOCDB simple family (application)
EP 85304627 A 19850628; JP 14687785 A 19850705