Title:
METHOD AND SYSTEM FOR IDENTIFYING SPEECH SOUND AND NON-SPEECH SOUND IN AN ENVIRONMENT
Document Type and Number:
WIPO Patent Application WO2006082868
Kind Code:
A3
Abstract:
In a method and system for identifying speech sound and non-speech sound in an environment, a speech signal and other non-speech signals are identified from a mixed sound source having a plurality of channels. The method includes the following steps: (a) using a blind source separation (BSS) unit to separate the mixed sound source into a plurality of sound signals; (b) storing spectrum of each of the sound signals; (c) calculating spectrum fluctuation of each of the sound signals in accordance with stored past spectrum information and current spectrum information sent from the blind source separation unit; and (d) identifying one of the sound signals that has a largest spectrum fluctuation as the speech signal.
Inventors:
YEN CHIA-SHIN
WU CHIEN-MING
LIN CHE-MING
WU CHIEN-MING
LIN CHE-MING
Application Number:
PCT/JP2006/301707
Publication Date:
December 21, 2006
Filing Date:
January 26, 2006
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD (JP)
YEN CHIA-SHIN
WU CHIEN-MING
LIN CHE-MING
YEN CHIA-SHIN
WU CHIEN-MING
LIN CHE-MING
International Classes:
G10L21/02; G10L11/02; G10L21/0272
Domestic Patent References:
| WO2001017109A1 | 2001-03-08 |
Other References:
VISSER E ET AL: "Blind source separation in mobile environments using a priori knowledge", ACOUSTICS, SPEECH, AND SIGNAL PROCESSING, 2004. PROCEEDINGS. (ICASSP '04). IEEE INTERNATIONAL CONFERENCE ON MONTREAL, QUEBEC, CANADA 17-21 MAY 2004, PISCATAWAY, NJ, USA,IEEE, vol. 3, 17 May 2004 (2004-05-17), pages 893 - 896, XP010718334, ISBN: 0-7803-8484-9
JAYARAMAN S ET AL: "Blind source separation of acoustic mixtures using time-frequency domain independent component analysis", NEURAL INFORMATION PROCESSING, 2002. ICONIP '02. PROCEEDINGS OF THE 9TH INTERNATIONAL CONFERENCE ON NOV. 18-22, 2002, PISCATAWAY, NJ, USA,IEEE, vol. 3, 18 November 2002 (2002-11-18), pages 1383 - 1387, XP010640643, ISBN: 981-04-7524-1
JAYARAMAN S ET AL: "Blind source separation of acoustic mixtures using time-frequency domain independent component analysis", NEURAL INFORMATION PROCESSING, 2002. ICONIP '02. PROCEEDINGS OF THE 9TH INTERNATIONAL CONFERENCE ON NOV. 18-22, 2002, PISCATAWAY, NJ, USA,IEEE, vol. 3, 18 November 2002 (2002-11-18), pages 1383 - 1387, XP010640643, ISBN: 981-04-7524-1
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