Graduate School and Research Center in Digital Sciences

Speech overlap detection using convolutive non-negative sparse coding: New improvements and Insights

Geiger, Jürgen; Vipperla, Ravichander; Evans, Nicholas; Schuller, Björn; Rigoll, Gerhard

EUSIPCO 2012, European Signal Processing Conference, August, 27-31, 2012, Bucharest, Romania

This paper presents recent advances in the application of convolutive non-negative sparse coding (CNSC) to the problem of overlap detection in the context of conference meetings and speaker diarization. CNSC is used to project a mixed speaker signal onto separate speaker bases and hence to detect intervals of competing speech. We present new energy ratio and total energy featureswhich give significant improvements over our previous work. The system is assessed using a subset of the AMI meeting corpus. We report results which are comparable to the state of the art which support the potential of a new approach to overlap detection. An analysis of system performance highlights the importance of further work to addressesweaknesses in detecting particularly short segments of overlapping speech.

Document Bibtex

Title:Speech overlap detection using convolutive non-negative sparse coding: New improvements and Insights
Keywords:speech overlap detection, convolutive non-negative sparse coding, speaker diarization
Type:Conference
Language:English
City:Bucharest
Country:ROMANIA
Date:
Department:Digital Security
Eurecom ref:3729
Copyright: © EURASIP. Personal use of this material is permitted. The definitive version of this paper was published in EUSIPCO 2012, European Signal Processing Conference, August, 27-31, 2012, Bucharest, Romania and is available at :
Bibtex: @inproceedings{EURECOM+3729, year = {2012}, title = {{S}peech overlap detection using convolutive non-negative sparse coding: {N}ew improvements and {I}nsights}, author = {{G}eiger, {J}{\"u}rgen and {V}ipperla, {R}avichander and {E}vans, {N}icholas and {S}chuller, {B}j{\"o}rn and {R}igoll, {G}erhard }, booktitle = {{EUSIPCO} 2012, {E}uropean {S}ignal {P}rocessing {C}onference, {A}ugust, 27-31, 2012, {B}ucharest, {R}omania }, address = {{B}ucharest, {ROMANIA}}, month = {08}, url = {http://www.eurecom.fr/publication/3729} }
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