Ravichander Vipperla
Ravichander Vipperla
Senior Engineer, Samsung AI Centre, Cambridge, UK
Dirección de correo verificada de samsung.com
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On the Vulnerability of Automatic Speaker Recognition to Spoofing Attacks with Artificial Signals.
F Alegre, R Vipperla, N Evans, B Fauve
Proc. Eusipco, 2012
622012
Spoofing countermeasures for the protection of automatic speaker recognition systems against attacks with artificial signals.
F Alegre, R Vipperla, N Evans
Proc. Interspeech, 2012
502012
Longitudinal study of ASR performance on ageing voices
R Vipperla, S Renals, J Frankel
492008
A new speaker verification spoofing countermeasure based on local binary patterns
F Alegre, R Vipperla, A Amehraye, N Evans
462013
Speech input from older users in smart environments: Challenges and perspectives
R Vipperla, M Wolters, K Georgila, S Renals
International Conference on Universal Access in Human-Computer Interaction …, 2009
442009
Ageing voices: The effect of changes in voice parameters on ASR performance
R Vipperla, S Renals, J Frankel
EURASIP Journal on Audio, Speech, and Music Processing 2010 (1), 525783, 2010
382010
Collaborative joint training with multitask recurrent model for speech and speaker recognition
Z Tang, L Li, D Wang, R Vipperla
IEEE/ACM Transactions on Audio, Speech, and Language Processing 25 (3), 493-504, 2016
272016
Speech overlap detection and attribution using convolutive non-negative sparse coding
R Vipperla, J Geiger, S Bozonnet, D Wang, N Evans, B Schuller, G Rigoll
International Conference on Acoustics, Speech and Signal Processing, 2012
272012
Online Non-Negative Convolutive Pattern Learning for Speech Signals
D Wang, R Vipperla, N Evans, TF Zheng
IEEE Transactions on Signal Processing, 1-1, 2011
262011
Online pattern learning for non-negative convolutive sparse coding
D Wang, R Vipperla, N Evans
Twelfth Annual Conference of the International Speech Communication Association, 2011
212011
Convolutive Non-Negative Sparse Coding and New Features for Speech Overlap Handling in Speaker Diarization.
J Geiger, R Vipperla, S Bozonnet, N Evans, B Schuller, G Rigoll
Proc. Interspeech, 2012
172012
Robust speech recognition in multi-source noise environments using convolutive non-negative matrix factorization
R Vipperla, S Bozonnet, D Wang, N Evans
CHiME workshop, Interspeech, 2011
172011
Spoken Dialogue Interfaces for Older People
R Vipperla, M Wolters, S Renals
Advances in Home Care Technologies, Assistive Technology Research Series 31 …, 2012
162012
Age recognition for spoken dialogue systems: Do we need it?
M Wolters, R Vipperla, S Renals
Tenth Annual Conference of the International Speech Communication Association, 2009
142009
Phone Adaptive Training for Speaker Diarization.
S Bozonnet, R Vipperla, N Evans
Proc. Interspeech, 2012
132012
Direct posterior confidence for out-of-vocabulary spoken term detection.
D Wang, S King, J Frankel, R Vipperla, N Evans, R Troncy
ACM Transactions on Information Systems 30 (3), 2012
122012
Speech Overlap Detection Using Convolutive Non-Negative Sparse Coding: New Improvements and Insights.
J Geiger, R Vipperla, N Evans, B Schuller, G Rigoll
Proc. Eusipco, 2012
112012
Automatic Speech Recognition for ageing voices
R Vipperla
University of Edinburgh, 2011
92011
Augmentation of adaptation data
R Vipperla, S Renals, J Frankel
Proc. Interspeech, 2010
62010
Evolutionary discriminative confidence estimation for spoken term detection
J Tejedor, A Echeverría, D Wang, R Vipperla
Multimedia tools and applications 62 (1), 5-34, 2013
42013
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