I hold a PhD degree, in the department of Electronics and Communication Engineering (ECE), with specialization in speech processing, under the guidance of Prof. B.Yegnanarayana, from International Institute of Information Technology (IIIT), Hyderabad. During PhD, I worked on speech and speaker-specific tasks using signal processing methods and artificial neural network based approaches.

Before upgrading to PhD, I worked as a Research Assistant and was an MS Research Scholar at the same place.  During this time, I worked on developing end-to-end spoken dialogue systems for Indian languages, specifically Telugu.

I hold a Bachelor of Technology (B.Tech) degree in the department of Electrical and Electronics Engineering (EEE) from Jawaharlal Nehru Technological University (JNTU), Hyderabad.

My research interests include: 

• Speech based human-computer interactive (HCI) systems

• Artificial neural networks

• Speech recognition

• Speech signal processing, Representation of speech information, Speech features extraction

• Voice activity detection (VAD), Speech separation

• Spoofed speech detection, Distant speech detection, Mimicry speech detection

• Speaker diarization, Speaker separation, Speaker turn detection

• Speaker recognition

• Speaker verification

• Privacy preservation

• Keyword spotting

• Similarities in speech patterns

• Practical degradations and real world scenarios

• PhD Thesis

Thesis title: "Application of single frequency filtering for speech and speaker-specific tasks". Click here for pdf

• Journal papers

  • 1. Radhika Bayya, Vishala Pannala, Sudhanshu Singh, Sriram Sundar, Krishna Prapoorna Biligiri, "Time-Frequency Analysis of Acoustic Signals from Tyre-Pavement Interaction", The Journal of the Acoustical Society of America, vol. 151, no. 1, pp. 370-386, 2022. DOI: 10.1121/10.0009269.

    2. Vishala Pannala and B.Yegnanarayana, "A neural network approach for speech activity detection for Apollo corpus", Computer, Speech & Language, vol. 65, pp. 101137, 2021. DOI: 10.1016/j.csl.2020.101137.

    3. Vishala Pannala, "Processing of speech signals for robust recognition in practical environments", CSI Transactions on ICT, Springer, vol. 5, no. 2, pp. 167-178, 2017. DOI: 10.1007/s40012-016-0153-5 

• Conference papers

  • 1. B. Yegnanarayana, BHVS Narayana Murthy, JV Satyanarayana, Vishala Pannala, and Nivedita Chennupati, "Robustness and Accuracy of Time Delay Estimation in a Live Room", in Proceedings of National Conference on Communications (NCC), IEEE, pp. 1-6, July, 2021. DOI: 10.1109/ncc52529.2021.9530120.

    2. B.Yegnanarayana, Anand Joseph and Vishala Pannala, "Enhancing formant information in spectrographic display of speech", in Proceedings of INTERSPEECH, pp. 165-169, 2020. DOI: 10.21437/Interspeech.2020-2653.

    3. Vishala Pannala, G. Aneeja, Sudarsana Reddy Kadiri, and B.Yegnanarayana, "Robust Estimation of  Fundamental Frequency using Single Frequency Filtering Approach", in Proceedings of INTERSPEECH, pp. 2155-2159, 2016. DOI: 10.21437/Interspeech.2016-1401

    4. Sivanand Achanta, Nivedita Chennupati, Vishala Pannala, Mansi Rankawat, and Kishore Prahallad,  "Voice Activity Detection using Temporal Characteristics of Autocorrelation Lag and Maximum Spectral Amplitude in Sub-bands", in Proceedings of the ICON, pp. 48-55, 2014. URI: https://aclanthology.org/W14-5107

• During PhD, for the years 2015-2019, I was awarded with Visveswaraya PhD Fellowship for Electronics & IT,  Ministry of Electronics and Information Technology (MEITy), Government of India (GoI).

• Secured 3rd place in the ‘Fearless Steps Challenge Phase-01’ for the task of ‘Speech Activity Detection’, held during INTERSPEECH, 2019.

1. Enhancing formant information in spectrographic display of speech, (Virtual) Interspeech, ISCA, Shanghai, China, October 2020.

2. Robust Estimation of Fundamental Frequency using Single Frequency Filtering Approach, Interspeech, ISCA, SanFrancisco, USA, September 2016.

3. Processing of speech signals for robust recognition in practical environments, Visvesvaraya PhD Scheme Paper Presentations, IIT Bombay, October 2016.

4. Processing of Speech Signals for Recognition in Practical Environments, Google Speech PhD Summit, Google Office, London, UK,  June 2016.

My profiles:

• LinkedIn profile:  www.linkedin.com/in/vishala-pannala-5b609317

• Institute profile: http://speech.iiit.ac.in/~vishala

• ORCID profile: https://orcid.org/0000-0001-7997-9255

• Scopus profile: https://www.scopus.com/authid/detail.uri?authorId=57191862102

• Google Scholar: https://scholar.google.co.in/citations?user=x33u0HsAAAAJ&hl=en

• DBLP profile: https://dblp.org/pid/194/1252.html

Email ids:

• E-mail address: pannalavishala@gmail.com

• Alternate mail: p.vishala@alumni.iiit.ac.in