Sensing and modeling human networks
Sensing and modeling human networks
Speech "Siglet" Detection for Business Microscope (concise contribution)
PERCOM '08 Proceedings of the 2008 Sixth Annual IEEE International Conference on Pervasive Computing and Communications
Speaker Siglet Detection for Business Microscope
ICMLA '08 Proceedings of the 2008 Seventh International Conference on Machine Learning and Applications
A privacy-sensitive approach to modeling multi-person conversations
IJCAI'07 Proceedings of the 20th international joint conference on Artifical intelligence
Real-time speaker identification and verification
IEEE Transactions on Audio, Speech, and Language Processing
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"Business Microscope" visualizes interactions among knowledge workers in organization by sensing their face-to-face communication using sensornet. To analyze the workers' communication in detail, speaker recognition for each node is needed. In the conventional studies, specific speaker-dependent training samples and acoustic model are required to recognize each speaker. In this work, speaker recognition using speaker-independent universal acoustic model is proposed. This method utilizes synchronous sensing of sensornet to extract the cepstral difference in acoustic channel and allows all speakers in the system to use same single acoustic model. The universal acoustic model constructed from 41 channel filterbank MFCC and large-sized LBG codebook achieved speaker recognition accuracy of 97.32% on test inputs of O.2s for four speakers. With the synchronization error (