About Me

I am a Ph.D student in the Department of electrical communication engineering (ECE) at the Indian Institute of Science (IISc), since August 2013. I am a member of the Speech and Audio Group headed by Prof. T. V. Sreenivas.

Prior to joining IISc for Ph.D, I worked with Ikanos Communications India Pvt. Ltd. from July 2011 to July 2013 as a Firmware engineer working on VDSL2 systems. I obtained M.E in Signal Processing from IISc in May 2011, and B.Tech degree in Electronics and Communication Engineering from JNTU, Hyderabad in May 2009.

My research interests are in the areas of speech and audio processing, and machine learning. Specifically, I am interested in multi-channel speech processing, speech source localization, self-localization of microphone arrays, acoustic scene analysis, compressed sensing and sparse signal processing applied to speech and audio.

Contact Details

Srikanth Raj Chetupalli
Ph.D Student,
Dept. of Electrical Communication Engineering,
Indian Institute of Science, Bangalore.
email: srajATeceDOTiiscDOTernetDOTin

Publications.

Journal publications

Srikanth Raj Chetupalli, and T. V. Sreenivas, ‘‘Joint spatial filter and time-varying MCLP for dereverberation and interference suppression of a dynamic/static speech source,’’ Manuscript submitted to IEEE/ACM Transactions on Audio, Speech, and Language Processing.

Srikanth Raj Chetupalli, and T. V. Sreenivas, ‘‘Late Reverberation Cancellation Using Bayesian Estimation of Multi-Channel Linear Predictors and Student's t-Source Prior,’’ IEEE/ACM Transactions on Audio, Speech, and Language Processing, Vol. 27, No. 6, Mar 2019.

Srikanth Raj Chetupalli, T. V. Sreenivas, ‘‘Joint Bayesian Estimation of Time-Varying LP Parameters and Excitation for Speech,’’ IEEE Signal Processing Letters, Vol 24, No. 4, April 2017.

Conference publications

Srikanth Raj Chetupalli, and T. V. Sreenivas, ‘‘Clean speech AE-DNN PSD constraint for MCLP based reverberant speech enhancement,’’ accepted for presentation at European Signal Processing Conference (EUSIPCO), Coruna, Spain, 2-6 Sep, 2019.

Srikanth Raj Chetupalli, Anirban Bhowmick, and T. V. Sreenivas, ‘‘Ad-hoc mobile array based audio segmentation using latent variable stochastic model,’’ accepted for presentation at European Signal Processing Conference (EUSIPCO), Coruna, Spain, 2-6 Sep, 2019.

Srikanth Raj Chetupalli, T. V. Sreenivas, and Anand Gopalakrishnan, ‘‘Comparison of low-dimension speech segment embeddings: Application to speaker diarization,’’ National conference on communications (NCC), Bangalore, India, 20-23 Feb, 2019.

Srikanth Raj Chetupalli, and T. V. Sreenivas, ‘‘Linear Prediction Based Diffuse Signal Estimation for Blind Microphone Geometry Calibration,’’ International workshop on Acoustic signal enhancement (IWAENC), Tokyo, Japan, 17-20 Sep, 2018.

Srikanth Raj Chetupalli, Ashwin Ram and T. V. Sreenivas, ‘‘Robust offline trained neural network for TDOA based sound source localization,’’ National Conference on Communications (NCC), IIT Hyderabad, India, 25-28 Feb, 2018.

Amit Kumar Verma, Hemendra Tomar, Srikanth Raj Chetupalli, and T. V. Sreenivas, ‘‘Non-Linear Filtering for Feature Enhancement of Reverberant Speech,’’ IEEE TECON 2017, Penang, Malaysia, 5-8 Nov, 2017.

Neeraj Sharma, Shreepad Potadar, Srikanth Raj Chetupalli, T. V. Sreenivas, ‘‘Mel-Scale Sub-band Modelling for Perceptually improved Time-Scale Modification of Speech and Audio Signals,’’ National Conference on Communications, Chennai, India, 2-4 Mar, 2017.

Srikanth Raj Chetupalli, Anand Gopalakrishnan, and T. V. Sreenivas, ‘‘Feature Selection and Model Optimization for Semi-supervised Speaker Spotting,’’ European Signal Processing Conference (EUSIPCO), Budapest, Hungary, Aug 29-Sep 2, 2016.

Srikanth Raj Chetupalli, and T. V. Sreenivas, ‘‘Successive Approximation Algorithm for LPC Estimation Using Sparse Residual Constraint,’’ National Conference on Communication (NCC), Mumbai, India, Feb 27-Mar 1, 2015.

Srikanth Raj Chetupalli, and T. V. Sreenivas, ‘‘Time Varying Linear Prediction using Sparsity Constraints,’’ IEEE International Conference on Acoustics, Speech, and Signal Processing, Florence, Italy, 4-9 May, 2014.

Ch. Srikanth Raj, and T. V. Sreenivas, ‘‘Joint Pitch-Analysis Formant-Synthesis framework for CS recovery of speech,’’ in Proc. of INTERSPEECH, Portland Oregon, USA, 9-13 Sep, 2012.

Ch. Srikanth Raj, and T. V. Sreenivas, ‘‘Time-varying signal adaptive transform and IHT recovery of compressive sensed speech,’’ in Proc. of INTERSPEECH, Florence, Italy, 28-31 Aug, 2011.

Ch. Srikanth Raj, and T. V. Sreenivas, ‘‘Compressive Sensing for Music signals: Comparison of transforms with coherent dictionaries,’’ in Proc. of 42nd AES International Conference, Ilmenau, Germany, 22-24 Jul, 2011.

NEWS

I was awarded TCS fellowship. More details can be found here