Leveraging LSTM Models for Overlap Detection in Multi-Party Meetings
Neeraj Sajjan, Shobhana Ganesh, Neeraj Kumar Sharma, Sriram Ganapathy, Neville Ryant
Abstract
The detection of overlapping speech segments is of key importance in speech applications involving analysis of multi-party conversations. The detection problem is challenging because overlapping speech segments are typically captured as short speech utterances far-field microphone recordings. In this paper, we propose detection of overlap segments using a neural network architecture consisting of long-short term memory (LSTM) models. The neural network architecture learns the presence of overlap in speech by identifying the spectrotemporal structure of overlapping speech segments. In order to evaluate the model performance, we perform experiments on simulated overlapped speech generated from the TIMIT database, and natural multi-talker conversational speech in the augmented Multiparty Interaction (AMI) meeting corpus. The proposed approach yields improvements over a Gaussian mixture model based overlap detection system. Furthermore, as an application of overlap detection, integration of overlap detection into speaker diarization task is shown to give improvement in diarization error rate.
BibTeX
@inproceedings{icassp2018_leveraginglstmmo,
title = {Leveraging LSTM Models for Overlap Detection in Multi-Party Meetings},
author = {Neeraj Sajjan and Shobhana Ganesh and Neeraj Kumar Sharma and Sriram Ganapathy and Neville Ryant},
booktitle = {ICASSP 2018},
year = {2018}
}