Areas of Interest: Speech Signal Processing/Analysis, Speech Enhancement, Source Localization, Speaker Recognition, Pattern Recognition/Machine learning

Brief Bio:

Dhananjaya N. holds a doctorate (2011) and a master's degree (MS by Research, 2004) in the area of speech signal processing, both from the Dept. of Computer Science and Engineering, Indian Institute of Technology (IIT) Madras. He obtained his bachelor's degree in Electronics and Communications (E&C) in the year 1998 from The National Institute of Engineering (NIE), Mysore University. He has worked for 3 years at Tata Infotech Ltd. (TIL), Bangalore immediately after his bachelor's. He has been working as a Research Associate at the Speech and Vision Lab, International Institute of Information Technology (IIIT) Hyderabad since 2007. He is a member of the Institute of Electrical and Electronics Engineers (IEEE) and the Computer Society of India (CSI).

Visits Abroad:

• 2006 : Toulouse, France - To attend MMUA-2006 and ICASSP-2006
• 2000 : Prague, Czech Republic - Through TIL Bangalore for System Installation
• 1999 : Prague, Czech Republic - Through TIL Bangalore for onsite development
• Muscat, Barcelona, Prague, Toulouse, Marseilles, Paris : As tourist

Invited Talks:

• Nov 2011, RIT Kottayam, Kerala : Invited talk on Speech Analysis, as part of the Short-term Training Programme (STP) on 'Recent Trends in Audio and Speech Processing' sponsored by the Directorate of Technical Education, Kerala.
• Nov 2008, RIT Kottayam, Kerala : Invited talk on Speech Technology, as part of the Short-term Training Programme (STP) on 'Recent Trends in Audio and Speech Processing' sponsored by the Directorate of Technical Education, Kerala.
• Sept 2008, NIT Suratkal, Karnataka : Invited talk on Speech Signal Processing, as part of the short-term teacher's training programme (STTP) on Signal, Speech and Image Processing sponsored by AICTE/MHRD, Govt. of India.
• 2006, Toulouse, France : Talk on Speaker Verification using Limited Amount of Data, as part of the EU Project on Cross Cultural Initiative
  
• 2005, CAIR Bangalore : Invited talk on MELP - Mixed excitation Linear Prediction codec.
  
• 2004, Kothamangalam, Kerala : Invited talk on Speech Technology, as part of the Teacher's Training Programme sponsored by AICTE, Govt. of India.

Sponsored Projects (involved):

• 2010-ongoing: Virtual Labs, MHRD, Govt. of India, at IIIT Hyderabad
  
• 2007-2010 : Development of Phonetic Engine for Indian Languages, TDIL, MIT, Govt. of India.
  
• 2005-2007 : Speech Coding: DRDO-IITM MoU, CAIR, Bangalore
  
• 2004-2005 : EU Project: Indo-German-Italian Cross Cultural Initiative

Conferences/Workshops coordination:

• ICISIP 2004, Chennai
  
• ICISIP 2005, Chennai
• WISP 2006, IIT Madras, Chennai
• WISP 2007, IIIT Hyderabad
• WISP 2009, IIIT Hyderabad
• WISP 2010, IIIT Hyderabad

1. Chetana Prakash, Dhananjaya N. and Suryakanth V Gangashetty, "Analysis of acoustic events in speech signals using Bessel series expansion", 2013. [More] [Digital]
2. B. Yegnanarayana and Dhananjaya N, "Spectro-temporal analysis of speech signals using zero-time windowing and group delay function", 2013. [More]
3. Vinay Kumar Mittal, Dhananjaya N. and B. Yegnanarayana, "Effect of Tongue Tip Trilling on the Glottal Excitation Source", 2012. [More] [Digital]
4. Dhananjaya N., B. Yegnanarayana and Peri Bhaskararao, "Acoustic analysis of trill sounds", 2012. [More] [Digital]
5. Chetana Prakash, Dhananjaya N. and Suryakanth V Gangashetty, "Detection of Glottal Closure Instants from Bessel Features using AM-FM Signal", 2011. [More] [Digital]
6. Chetana Prakash, Dhananjaya N. and Suryakanth V Gangashetty, "Exploring Bessel Features for Detection of Glottal Closure Instants", 2011. [More] [Digital]
7. Chetana Prakash, Dhananjaya N. and Suryakanth V Gangashetty, "Bessel features for Detection of Voice Onset Time using AM-FM Signal", 2011. [More] [Digital]
8. B. Yegnanarayana, Dhananjaya N., Anand Joseph Xavier M. and Suryakanth V Gangashetty, "Decomposition of speech signals for analysis of aperiodic components of excitation", 2011. [More] [Digital]
9. Dhananjaya N., Suryakanth V Gangashetty and B. Yegnanarayana, "Acoustic-phonetic information from excitation source for refining manner hypotheses of a phone recognizer", 2011. [More] [Digital]
10. Dhananjaya N, "Signal processing for excitation-based analysis of acoustic events in speech", 2011. [More] [Digital]
11. Dhananjaya N. and B. Yegnanarayana, "Voiced/nonvoiced detection based on robustness of voiced epochs", 2010. [More] [Digital]
12. Dhananjaya N., S. Rajendran and B. Yegnanarayana, "Features for automatic detection of voice bars in continuous speech", 2008. [More] [Digital]
13. Dhananjaya N. and B. Yegnanarayana, "Speaker change detection in casual conversations using excitation source features", 2008. [More] [Digital]
14. B. Yegnanarayana, S. Rajendran, Hussien Seid Worku and Dhananjaya N, "Analysis of glottal stops in speech signals", 2008. [More] [Digital]
15. C. Krishna Mohan, Dhananjaya N. and B. Yegnanarayana, "Video Shot Segmentation Using Late Fusion Technique", 2008. [More] [Digital]
16. B. Yegnanarayana, C. Chandra Sekhar, S. Palanivel, V. Suresh, Anil Kumar Sao and Dhananjaya N, "Issues in the Development of an Audio-Video based Person Authentication System", 2006. [More]
17. Dhananjaya N. and B. Yegnanarayana, "Correlation-Based Similarity Between Signals for Speaker Verification with Limited Amount of Speech Data", 2006. [More] [Digital]
18. C. Krishna Mohan, Dhananjaya N., Suryakanth V Gangashetty and B. Yegnanarayana, "Sports video classification using autoassociative neural network models", 2006. [More]
19. Dhananjaya N., Guruprasad S. and B. Yegnanarayana, "Speaker Segmentation Based on Subsegmental Features and Neural Network Models", 2004. [More] [Digital]
20. Dhananjaya N, "Speaker segmentation using excitation source features", 2004. [More] [Digital]
21. Guruprasad S., Dhananjaya N. and B. Yegnanarayana, "AANN models for speaker recognition based on difference cepstrals", 2003. [More] [Digital]