Title:
METHOD FOR INCREASING THE COMPREHENSIBILITY OF SPEECH
Document Type and Number:
WIPO Patent Application WO/2014/138758
Kind Code:
A3
Abstract:
The invention relates to a method for increasing the comprehensibility of speech in an audio signal (6), which consists of a mixture of interference noises (3) and speech signals (5), in digital electroacoustic communications systems (1). The comprehensibility of speech is achieved by reducing the volume of the interference noises (3) from the position of a speaker (4). To record the audio signal (6), at least two microphone channels are used, which transmit the audio signal (6) to an evaluation unit (8), in which the interference noise (3) is minimised in an electronic manner and the generated speech signal (5) is reproduced by the communications system (1) by means of an output unit (9). The operation of the communications system (1) and/or of the evaluation unit (8) is ensured by operating software. The evaluation unit (8) comprises: - a first module (12), particularly a DOA estimation module (12), for determining the direction of the speech signal (5); - a second module (13), particularly a GSC beamforming module (13), for determining and separating the speech signal (5) from the interference noises (3); and - a third module (14), particularly a multichannel post-filter module (14), for subtracting the interference noise (3) from the speech signal (5).
Inventors:
PFEIFENBERGER LUKAS (AT)
Application Number:
PCT/AT2014/000045
Publication Date:
December 18, 2014
Filing Date:
March 10, 2014
Export Citation:
Assignee:
COMMEND INTERNAT GMBH (AT)
International Classes:
G10L21/0216
Foreign References:
| EP2562752A1 | 2013-02-27 |
Other References:
BAI MINGSIAN R ET AL: "Using a Steered-Response Power-Phase Transform to Optimize Speech Pickup in Reverberant Environments", JAES, AES, 60 EAST 42ND STREET, ROOM 2520 NEW YORK 10165-2520, USA, vol. 56, no. 4, 1 April 2008 (2008-04-01), pages 280 - 291, XP040508472
XIAOYU MA ET AL: "Study on 2-dimensional microphone circular array speech enhancement algorithm based on the DOA", PROCEEDINGS OF 2011 INTERNATIONAL CONFERENCE ON ELECTRONIC & MECHANICAL ENGINEERING AND INFORMATION TECHNOLOGY, 1 August 2011 (2011-08-01), pages 2505 - 2508, XP055126724, ISBN: 978-1-61-284087-1, DOI: 10.1109/EMEIT.2011.6023608
XIAOYU MA ET AL: "Study on 2-dimensional microphone circular array speech enhancement algorithm based on the DOA", PROCEEDINGS OF 2011 INTERNATIONAL CONFERENCE ON ELECTRONIC & MECHANICAL ENGINEERING AND INFORMATION TECHNOLOGY, 1 August 2011 (2011-08-01), pages 2505 - 2508, XP055126724, ISBN: 978-1-61-284087-1, DOI: 10.1109/EMEIT.2011.6023608
Attorney, Agent or Firm:
KRAUSE, Peter (Baden, AT)
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