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Ravichander Vipperla
Ravichander Vipperla
Senior Applied Scientist, Amazon, Cambridge, UK
Dirección de correo verificada de amazon.com
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Cn-celeb: multi-genre speaker recognition
L Li, R Liu, J Kang, Y Fan, H Cui, Y Cai, R Vipperla, TF Zheng, D Wang
Speech Communication 137, 77-91, 2022
1252022
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, 1-10, 2010
872010
On the Vulnerability of Automatic Speaker Recognition to Spoofing Attacks with Artificial Signals.
F Alegre, R Vipperla, N Evans, B Fauve
Proc. Eusipco, 2012
842012
Nas-bench-asr: Reproducible neural architecture search for speech recognition
A Mehrotra, AGCP Ramos, S Bhattacharya, Ł Dudziak, R Vipperla, ...
International Conference on Learning Representations, 2021
782021
Longitudinal study of ASR performance on ageing voices
R Vipperla, S Renals, J Frankel
762008
A new speaker verification spoofing countermeasure based on local binary patterns
F Alegre, R Vipperla, A Amehraye, N Evans
INTERSPEECH 2013, 14th Annual Conference of the International Speech …, 2013
662013
Spoofing countermeasures for the protection of automatic speaker recognition systems against attacks with artificial signals.
F Alegre, R Vipperla, N Evans
Proc. Interspeech, 2012
632012
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
602016
Speech input from older users in smart environments: Challenges and perspectives
R Vipperla, M Wolters, K Georgila, S Renals
Universal Access in Human-Computer Interaction. Intelligent and Ubiquitous …, 2009
472009
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
382012
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
342011
Shrinkml: End-to-end asr model compression using reinforcement learning
Ł Dudziak, MS Abdelfattah, R Vipperla, S Laskaridis, ND Lane
arXiv preprint arXiv:1907.03540, 2019
272019
Bunched lpcnet: Vocoder for low-cost neural text-to-speech systems
R Vipperla, S Park, K Choo, S Ishtiaq, K Min, S Bhattacharya, A Mehrotra, ...
arXiv preprint arXiv:2008.04574, 2020
262020
Online Pattern Learning for Non-Negative Convolutive Sparse Coding.
D Wang, R Vipperla, NWD Evans
Interspeech, 65-68, 2011
222011
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
212012
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
182011
Spoken Dialogue Interfaces for Older People
R Vipperla, M Wolters, S Renals
Advances in Home Care Technologies, Assistive Technology Research Series 31 …, 2012
172012
Age recognition for spoken dialogue systems: Do we need it?
MK Wolters, R Vipperla, S Renals
INTERSPEECH, 1435-1438, 2009
172009
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
162012
Automatic Speech Recognition for ageing voices
R Vipperla
University of Edinburgh, 2011
142011
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Artículos 1–20