Patent ID: 9064501
Filing Date: 2015-06-23
Classification: G10L,H04R

Abstract:
1. A speech processing device, comprising: a speech detector that detects speech of individual speakers from acoustic signals; a total-amount-of-speech calculator that calculates, for each of all pairs of the speakers and for each of segments defined by dividing a determination time period, a total amount of speech on the basis of the detected speech, the total amount of speech being a sum of amounts of speech of the pair of speakers in the segment; an established-conversation calculator that calculates, for each of the pairs of the speakers and for each of the segments, a degree of established conversation on the basis of the detected speech, the degree of established conversation being a value indicating a rate of a time when one of the pair of the speakers gives speech and the other of the pair of the speakers gives no speech; a long-time feature calculator that calculates, for each of the pairs of the speakers, a long-time feature obtained by integrating the degrees of established conversation calculated for the pair of the speakers within the determination time period; and a conversational-partner determining unit that extracts a conversation group holding conversation from the speakers, on the basis of the calculated long-time features, wherein the established-conversation calculator excludes, for each of the pairs of the speakers, the degree of established conversation of the segment with the sum of amounts of speech lower than a first threshold from the calculation of the long-time feature for the pair of the speakers, and the conversational-partner determining unit determines that the speakers of the pair with the long-time feature greater than or equal to a second threshold belong to the same conversation group.