NDLI: Speech acquisition in meetings with an audio-visual sensor array (2005)

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Speech acquisition in meetings with an audio-visual sensor array (2005)

Content Provider	CiteSeerX
Author	Mccowan, Iain Krishna, Maganti Hari Gatica-Perez, Daniel Moore, Darren Ba, Sileye
Description	Close-talk headset microphones have been traditionally used for speech acquisition in a number of applications, as they naturally provide a higher signal-to-noise ratio-needed for recognition tasksthan single distant microphones. However, in multi-party conversational settings like meetings, microphone arrays represent an important alternative to close-talking microphones, as they allow for localisation and tracking of speakers and signal-independent enhancement, while providing a non-intrusive, hands-free operation mode. In this article, we investigate the use of an audio-visual sensor array, composed of a small table-top microphone array and a set of cameras, for speaker tracking and speech enhancement in meetings. Our methodology first fuses audio and video for person tracking, and then integrates the output of the tracker with a beamformer for speech enhancement. We compare and discuss the features of the resulting speech signal with respect to that obtained from single close-talking and table-top microphones. 1. in Proc. IEEE Int. Conf. on Multimedia (ICME
File Format	PDF
Language	English
Publisher Date	2005-01-01
Access Restriction	Open
Subject Keyword	Speech Acquisition Recognition Tasksthan Single Distant Microphone Single Close-talking Table-top Microphone Signal-independent Enhancement Small Table-top Microphone Array Hands-free Operation Mode Microphone Array Audio-visual Sensor Array Speech Enhancement Important Alternative Close-talking Microphone Close-talk Headset Microphone Person Tracking Multi-party Conversational Setting Speaker Tracking Speech Signal
Content Type	Text
Resource Type	Article

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