| 摘要 |
<p>A speech processing device which can accurately extract a conversation group from among a plurality of speakers, even when a conversation group formed of three or more people is present. This device (400) comprises: a spontaneous speech detection unit (420) and a direction-specific speech detection unit (430) which separately detect, from a sound signal, uttered speech from the speakers; a conversation establishment level calculation unit (450) which calculates a conversation establishment level for each separated segment of the time being determined, for all of the pairings of two people, on the basis of the detected uttered speech; an extended-period characteristic amount calculation unit (460) which calculates an extended-period characteristic amount for the conversation establishment level of the time being determined, for each pairing; and a conversation-partner determination unit (470) which extracts a conversation group which forms a conversation on the basis of the calculated extended-period characteristic amount.</p> |
