Area of Interest: Speech and Language Processing

Brief Bio:

Kishore S. Prahallad is an associate professor at the International Institute of Information Technology (IIIT) Hyderabad. He is associated with IIIT Hyderabad since March 2001, and started the speech activities in Language Technologies Research Center (LTRC) at IIIT-H.  He served as a research scientist from 2001-2008, senior research scientist from 2008-2010, assistant professor from 2010-2013.

He did BE in computer science and engineering (CSE) from Deccan College of Eng. & Tech., Osmania University in 1998, MS (by Research) in 2001 from Dept. of CSE, Indian Institute of Technology (IIT) Madras, and PhD in 2010 from Language Technologies Institute (LTI), School of Computer Science, Carnegie Mellon University (CMU), USA.

His research interests are in speech and language processing, specifically in text-to-speech synthesis, and speech analytics using untranscribed speech data. His current projects include speech analytics (spoken audio search, speech summarization), building multimodal virtual assistant(s) on mobile devices for illiterate, differently-abled and tourists (specifically in the context of India and Indian languages), collection and automatic annotation of spoken data or oral narratives in ~1000 Indian languages, and learning-to-learn.

1. Gautam Varma Mantena and Kishore S. Prahallad, "Use of Articulatory Bottle-Neck Features for Query-by-Example Spoken Term Detection in Low Resource Scenarios", 2014. [More]
2. Basil George, Abhijeet Saxena, Gautam Varma Mantena, Kishore S. Prahallad and B. Yegnanarayana, "Unsupervised query-by-example spoken term detection using bag of acoustic words and non-segmental dynamic time warpingl", 2014. [More] [Digital]
3. Gautam Varma Mantena, Sivanand Achanta and Kishore S. Prahallad, "Query-by-Example Spoken Term Detection using Frequency Domain Linear Prediction and Non-segmental Dynamic Time Warping", 2014. [More] [Digital]
4. Anandaswarup Vadapalli and Kishore S. Prahallad, "Learning continuous-valued word representations for phrase break prediction", 2014. [More] [Digital]
5. Sivanand Achanta, Nivedita Chennupati, Vishala Pannala, Mansi R and Kishore S. Prahallad, "Voice Activity Detection using Maximum Spectral Amplitude in Sub-bands", 2014. [More]
6. Santosh Kesiraju, Gautam Varma Mantena and Kishore S. Prahallad, "IIIT-H System for MediaEval 2014 QUESST", 2014. [More] [Digital]
7. Gautam Varma Mantena and Kishore S. Prahallad, "IIIT-H SWS 2013: Gaussian Posteriorgrams of Bottle-Neck Features for Query-by-Example Spoken Term Detection", 2013. [More] [Digital]
8. Naresh Kumar Elluru, Anandaswarup Vadapalli, Veera Raghavendra Elluru, Hema A Murthy and Kishore S. Prahallad, "Is word-to-phone mapping better than phone-phone mapping for handling English words?", 2013. [More] [Digital]
9. Anandaswarup Vadapalli, Peri Bhaskararao and Kishore S. Prahallad, "Significance of word-terminal syllables for prediction of phrase breaks in Text-to-Speech systems for Indian languages", 2013. [More] [Digital]
10. Ronanki Srikanth, Bajibabu Bollepalli and Kishore S. Prahallad, "Duration Modelling in Voice Conversion Using Artificial Neural Networks", 2012. [More]
11. Florian Metze et al., "The Spoken Web Search Task at MediaEval 2011", 2012. [More] [Digital]
12. Kishore S. Prahallad, Naresh Kumar Elluru, Venkatesh Keri and S. Rajendran, "IIIT-H Indic Speech Databases", 2012. [More] [Digital]
13. Gautam Varma Mantena, Bajibabu Bollepalli and Kishore S. Prahallad, "SWS task: Articulatory Phonetic Units and Sliding DTW", 2011. [More] [Digital]
14. Kishore S. Prahallad and A. W. Black, "Segmentation of monologues in audio books for building synthetic voice", 2011. [More] [Digital]
15. Lakshmi kanth B, Venkatesh Keri and Kishore S. Prahallad, "Durational characteristics of phonemes in Indian languages", 2011. [More] [Digital]
16. Anumanchipalli Gopalakrishna, Kishore S. Prahallad and A. W. Black, "Festvox: Tools for creation and analyses of large speech corpora", 2011. [More] [Digital]
17. Vijayaditya P. and Kishore S. Prahallad, "Significance of vowel epenthesis in Telugu Text-to-Speech Synthesis", 2011. [More] [Digital]
18. Vijayaditya P. and Kishore S. Prahallad, "Exploiting phone-class specific landmarks for refinement of segment boundaries in TTS databases", 2011. [More] [Digital]
19. Gautam Varma Mantena, S. Rajendran, B. Rambabu, Suryakanth V Gangashetty, B. Yegnanarayana and Kishore S. Prahallad, "A Speech-Based Conversation System for Accessing Agriculture Commodity Prices in Indian Languages", 2011. [More] [Digital]
20. Bajibabu Bollepalli, Ronanki Srikanth, Sathya Adithya Thati, Bhiksha Raj, B. Yegnanarayana and Kishore S. Prahallad, "A Comparison of Prosody Modification Using Instants of Significant Excitation and Mel-cepstral Vocoder", 2011. [More]
21. Gautam Varma Mantena, S. Rajendran, Suryakanth V Gangashetty, B. Yegnanarayana and Kishore S. Prahallad, "Development of a Spoken Dialogue System for accessing Agricultural Information in Telugu", 2011. [More] [Digital]
22. Sri Harish Reddy M., Kishore S. Prahallad, Suryakanth V Gangashetty and B. Yegnanarayana, "Significance of Pitch Synchronous Analysis for Speaker Recognition using AANN Models", 2010. [More] [Digital]
23. Kishore S. Prahallad, Veera Raghavendra Elluru and Alan W. Black, "Semi-Supervised Learning of Acoustic Driven Prosodic Phrase Breaks for Text-to-Speech Systems", 2010. [More] [Digital]
24. Veera Raghavendra Elluru, Vijayaditya P. and Kishore S. Prahallad, "Speech Synthesis using Artificial Neural Networks", 2010. [More] [Digital]
25. Veera Raghavendra Elluru and Kishore S. Prahallad, "A Multilingual Screen Reader in Indian Languages", 2010. [More] [Digital]
26. Sree Harsha Yella, Vasudeva Varma and Kishore S. Prahallad, "Prominence based scoring of speech segments for automatic speech-to-speech summarization", 2010. [More] [Digital]
27. Sree Harsha Yella, Vasudeva Varma and Kishore S. Prahallad, "Significance of Anchor Speaker Segments for Constructing Extractive Audio Summaries of Broadcast News", 2010. [More] [Digital]
28. Venkatesh Keri and Kishore S. Prahallad, "A comparative study of constrained and unconstrained approaches for segmentation of speech signal", 2010. [More] [Digital]
29. Srinivas Desai, A. W. Black, B. Yegnanarayana and Kishore S. Prahallad, "Spectral mapping using artificial neural networks for voice conversion", 2010. [More] [Digital]
30. B. Mahananda, C. M. S. Raju, R. R. Patil, J. Narayana, S. Varakhedi and Kishore S. Prahallad, "Building a prototype text to speech for Sanskrit", 2010. [More] [Digital]
31. Anandaswarup Vadapalli, R. R. Patil, C. M. S. Raju, Veera Raghavendra Elluru, V. Ambati and Kishore S. Prahallad, "Rapid development of speech to speech systems for tourism and emergency services in Indian languages", 2010. [More] [Digital]
32. Kishore S. Prahallad, Veera Raghavendra Elluru and A. W. Black, "Learning Speaker-Specific Phrase Breaks for Text-to-Speech Systems", 2010. [More] [Digital]
33. Veera Raghavendra Elluru and Kishore S. Prahallad, "Database Pruning for Indian Language Unit Selection Synthesizers", 2009. [More] [Digital]
34. Srinivas Desai, Veera Raghavendra Elluru, B. Yegnanarayana, Alan W Black and Kishore S. Prahallad, "Voice Conversion Using Artificial Neural Networks", 2009. [More] [Digital]
35. Sree Harsha Yella, Kishore S. Prahallad and Vasudeva Varma, "Summarization of Broadcast News using Speaker Tracking", 2009. [More] [Digital]
36. Lavanya Prahallad, Suryakanth V Gangashetty, Kishore S. Prahallad and Raj Reddy, "Application of Automatic Language and SubjectIdentification for Universal Digital Library using Sparse Data", 2008. [More] [Digital]
37. Gopala Krishna Anumanchipalli, Kishore S. Prahallad and Alan W Black, "Significance of Early Tagged Contextual Graphemes in Grapheme Based Speech Synthesis and Speech Recognition Systems", 2008. [More] [Digital]
38. Tanuja Sarkar, Sachin Joshi, Satish Chandra Pammi and Kishore S. Prahallad, "LTS Using Decision Forest of Regression Trees and Neural Networks", 2008. [More] [Digital]
39. Veera Raghavendra Elluru, B. Yegnanarayana, Alan W Black and Kishore S. Prahallad, "Building Sleek Synthesizer for Multi-lingual Screen Reader", 2008. [More] [Digital]
40. Veera Raghavendra Elluru, Srinivas Desai, B. Yegnanarayana, Alan W Black and Kishore S. Prahallad, "Global Syllable Set for Building Speech Synthesis in Indian Languages", 2008. [More] [Digital]
41. Veera Raghavendra Elluru, B. Yegnanarayana and Kishore S. Prahallad, "Speech Synthesis Using Approximate Matching of Syllables", 2008. [More] [Digital]
42. Veera Raghavendra Elluru, Srinivas Desai, B. Yegnanarayana, Alan W Black and Kishore S. Prahallad, "Blizzard 2008: Experiments on Unit Size for Unit Selection Speech Synthesis", 2008. [More] [Digital]
43. Sachin Joshi, Kishore S. Prahallad and B. Yegnanarayana, "AANN-HMM Models for Speaker Verification and Speech Recognition", 2008. [More] [Digital]
44. Alan W Black, Christina L. Bennett, John Kominek, Brian Langner, Kishore S. Prahallad and Arthur Toth, "Blizzard 2008: Optimally using a large database for unit selection synthesis", 2008. [More] [Digital]
45. Rohit Kumar, Rashmi Gangadharaiah, Sharath Rao, Kishore S. Prahallad, Carolyn P Rose and Alan W Black, "Building a Better Indian English Voice using More Data", 2007. [More] [Digital]
46. Alan W Black et al., "CMU Blizzard 2007: A Hybrid Acoustic Unit Selection System from Statistically Predicted Parameters", 2007. [More] [Digital]
47. Anand Arokia Raj et al., "Text Processing for Text to Speech Systems in Indian Languages", 2007. [More] [Digital]
48. Kishore S. Prahallad, Arthur R Toth and Alan W Black, "Automatic Building of Synthetic Voices from Large Multi-Paragraph Speech Databases", 2007. [More] [Digital]
49. Sebsibe Hailemariam and Kishore S. Prahallad, "Extraction of Linguistic Information with the Aid of Acoustic Data to Build Speech Systems", 2007. [More] [Digital]
50. Venkatesh Keri, Sathish Chandra Pammi and Kishore S. Prahallad, "Pause Prediction from Lexical and Syntax Information", 2007. [More] [Digital]
51. Anand Arokia Raj and Kishore S. Prahallad, "Identification and Conversion on Font-Data in Indian Languages", 2007. [More] [Digital]
52. Sathish Chandra Pammi and Kishore S. Prahallad, "POS Tagging and Chunking using Decision Forests", 2007. [More] [Digital]
53. Kishore S. Prahallad, Alan W Black and Ravishankar Mosur, "Sub-phonetic modeling for capturing pronunciation variations for conversational speech synthesis", 2006. [More] [Digital]
54. Kishore S. Prahallad, Sudhakar Varanasi, Ranganatham Veluru, Bharat Krishna M and Debashish S Roy, "Significance of Formants from Difference Spectrum for Speaker Identification", 2006. [More] [Digital]
55. Kishore S. Prahallad, Suryakanth V Gangashetty, B. Yegnanarayana and D.Raj Reddy, "Problems and prospects in collection of spoken language data", 2006. [More] [Digital]
56. Prahallad Lavanya, Kishore S. Prahallad and Ganapathi Raju Madhavi, "A Simple Approach for Building Transliteration Editors for Indian Languages", 2005. [More] [Digital]
57. Kishore S. Prahallad and Black Alan, "A text to speech interface for Universal Digital Library", 2005. [More] [Digital]
58. Anumanchipalli Gopalakrishna et al., "Development of Indian Language Speech Databases for Large Vocabulary Speech Recognition Systems", 2005. [More] [Digital]
59. Tanuja Sarkar, Venkatesh Keri, Santhosh Yuvaraj and Kishore S. Prahallad, "Building Bengali Voice Using Festival", 2005. [More] [Digital]
60. Vamshi Ambati and Kishore S. Prahallad, "How can Academic Software Research and Open Source Software Engineering help each other?", 2004. [More] [Digital]
61. Sebsibe H/Mariam, Kishore S. Prahallad, Alan W Black, Rohit Kumar and Rajeev Sangal, "Unit Selection Voice for Amharic Using Festvox", 2004. [More] [Digital]
62. Rohit Kumar and Kishore S. Prahallad, "Automatic Pruning of Unit Selection Speech Databases for Synthesis without Loss of Naturalness", 2004. [More] [Digital]
63. Kishore S. Prahallad, Alan W Black, Rohit Kumar and Rajeev Sangal, "Experiments with Unit Selection Speech Databases for Indian Languages", 2003. [More] [Digital]
64. Kishore S. Prahallad and Alan W Black, "Unit Size in Unit Selection Speech Synthesis", 2003. [More] [Digital]
65. Kishore S. Prahallad, Rohit Kumar and Rajeev Sangal, "A Data-Driven Synthesis approach for Indian Languages using Syllable as Basic Unit", 2002. [More] [Digital]
66. Kishore S. Prahallad, Rajeev Sangal and M. Srinvas, "Building Hindi and Telugu Voices using Festvox", 2002. [More] [Digital]
67. B. Yegnanarayana and Kishore S. Prahallad, "AANN: an alternative to GMM for pattern recognition", 2002. [More] [Digital]
68. B. Yegnanarayana, K. Sharat Reddy and Kishore S. Prahallad, "Source and system features for speaker recognition using AANN models", 2001. [More] [Digital]
69. Kishore S. Prahallad, B. Yegnanarayana and Suryakanth V Gangashetty, "Online text-independent speaker verification system using autoassociative neural network models", 2001. [More] [Digital]
70. Kishore S. Prahallad and B. Yegnanarayana, "Speaker verification: Minimizing channel effects using auto-associative neural network models", 2000. [More] [Digital]
71. B. Yegnanarayana, Kishore S. Prahallad and A. V. N. S. Anjani, "Neural network models for capturing probability distribution of training data", 2000. [More] [Digital]
72. Kishore S. Prahallad, "Speaker verification using auto-associative neural network models", 2000. [More] [Digital]
73. Kishore S. Prahallad and B. Yegnanarayana, "Online text-independent speaker verification system", 2000. [More] [Digital]
74. Kishore S. Prahallad and B. Yegnanarayana, "Identification of handset-type using Auto Associative Neural Networks", 1999. [More] [Digital]