ArXiv
Prasanna Kumar Muthukumar and Alan W Black,
"Recurrent Neural Network Postfilters for Statistical Parametric Speech Synthesis" 
[arXiv:1601.07215]
Interspeech 2015
Alan W Black and
Prasanna Kumar Muthukumar,
"Random Forests for Statistical Speech Synthesis" 
Pallavi Baljekar, Sunayana Sitaram,
Prasanna Kumar Muthukumar, and Alan W Black,
"Using Articulatory Features and Inferred Phonological Segments in Zero Resource Speech Processing"
ArXiv
Prasanna Kumar Muthukumar and Alan W Black,
"A Deep Learning Approach to Data-driven Parameterizations for Statistical Parametric Speech Synthesis" 
[arXiv:1409.8558] [code]
ICASSP 2014
Prasanna Kumar Muthukumar and Alan W Black
"Automatic Discovery of a Phonetic Inventory for Unwritten Languages for Statistical Speech Synthesis" 
[pdf]
The code that I used for this paper is
here. It is not very well documented though. So if you plan to use this, shoot me an email and I can tell you the best way to use this for your task.
Interspeech 2013
Prasanna Kumar Muthukumar, Alan W Black, and H. Timothy Bunnell
"Optimizations and Fitting Procedures for the Liljencrants-Fant model for Statistical parametric Speech Synthesis" 
[pdf]
Speech Prosody 2012
Stefan Steidl, Tim Polzehl, H. Timothy Bunnell, Ying Dou,
Prasanna Kumar Muthukumar, Daniel Perry, Kishore Prahallad, Callie Vaughn, Alan W. Black, and Florian Metze
"Emotion Identification for Evaluation of Synthesized Emotional Speech" 
[pdf]
ICASSP 2012
Alan W Black, H. Timothy Bunnell, Ying Dou,
Prasanna Kumar Muthukumar, Florian Metze, Daniel Perry, Tim Polzehl, Kishore Prahallad, Stefan Steidl, and Callie Vaughn
"Articulatory Features for Expressive Speech Synthesis" 
[pdf]
JHU Workshop 2011
Alan W Black, H. Timothy Bunnell, Ying Dou,
Prasanna Kumar Muthukumar, Florian Metze, Daniel Perry, Tim Polzehl, Kishore Prahallad, Stefan Steidl, and Callie Vaughn
"New Parameterization for Emotional Speech Synthesis: Final Report" 
[pdf]
Speech Synthesis Workshop 7  (2010)
Gopalakrishna Anumanchipalli,
Prasanna Kumar Muthukumar, Udhyakumar Nallasamy, Alok Parlikar, Alan W Black, and Brian Langner.
"Improving Speech Synthesis for Noisy Environments" 
[pdf]