The localization of acoustic sources in a room is essential in many applications, as security monitoring, video conferencing, automatic scene analysis, reverberation canceling, or robust Speech Recognition under multiple-party effect. Through the present paper the design and operation of a negative beamformer for multiple source speech separation will be presented. The problems found for its proper operation when multiple sources are present on the same band will be pointed out and the solutions found will be commented and discussed showing the results of real experiments carried out on a recording scenario.

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Bibliographic reference.  Gómez-Vilda, P. / Álvarez-Marquina, A. / Nieto-Lluís, V. / Rodellar-Biarge, V. / Martínez-Olalla, R. (2001): "Multiple source separation in the frequency domain using negative beamforming", In EUROSPEECH-2001, 2619-2622.