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Randall Azhar Ali

Randall Azhar Ali

Research

Acoustics, Signal Processing

Randall Ali (Randy) is a post doctoral researcher working in the SOUNDS and SONORA projects, on the intersection of physical/numerical acoustics and signal processing. 

Biography

Randall Ali received a B.Sc. degree in electrical and computer engineering from the University of the West Indies in 2007, an M.S. degree in acoustics from the Pennsylvania State University in 2013, and a Ph.D. in electrical engineering  from KU Leuven in 2020. He has been active in both teaching and research in signal processing and acoustics, focusing on a variety of topics including room acoustic modelling, signal enhancement for assistive hearing devices, musical acoustics, and thermoacoustics. 

Active projects

Publications

International Journal Papers

  1. Rocco G., Bernardi G., Ali R., van Waterschoot T., Polo E.M., Barbieri R., Paglialonga A., "Characterization of the Intelligibility of Vowel-Consonant-Vowel (VCV) Recordings in Five Languages for Application in Speech-in-Noise Screening in Multilingual Settings", Applied Sciences, vol. 13, no. 5344, 2023, pp. 1-13.

  2. Dietzen T., Ali R., Taseska M., van Waterschoot T., "MYRiAD: A Multi-Array Room Acoustic Database", EURASIP J. Audio Speech Music Process., vol. 2023, no. 17, Apr. 2023, pp. 1--14.

  3. Ali R., van Waterschoot T., Moonen M., "An integrated MVDR beamformer for speech enhancement using a local microphone array and external microphones", EURASIP Journal on Audio, Speech, and Music Processing, no. 10, Feb. 2021, pp. 1-20.

  4. Ali R., van Waterschoot T., Moonen M., "Integration of and estimated constraints into an MVDR beamformer for speech enhancement", IEEE/ACM Transactions on Audio, Speech and Language Processing, vol. 27, no. 12, dec 2019, pp. 2288-2300.

  5. Ali R., Bernardi G., van Waterschoot T., Moonen M., "Methods of extending a generalised sidelobe canceller with external microphones", IEEE/ACM Transactions on Audio, Speech, and Language Processing, vol. 27, no. 9, Sep. 2019, pp. 1349-1364.

International Conference Papers

  1. Cakmak B., Dietzen T., Ali R., Naylor P., van Waterschoot T., "A distributed steered response power approach to source localization in wireless acoustic sensor networks", in Proc. of the 17th International Workshop on Acoustic Signal Enhancement (IWAENC 2022), Bamberg, Germany, Sep. 2022, pp. 1-5.

  2. Blochberger M., Elvander F., Ali R., Moonen M., Ostergaard J., Jensen J., van Waterschoot T., "Distributed Cross-Relation-Based Frequency-Domain Blind System Identification using Online-ADMM", in Proc. of the 17th International Workshop on Acoustic Signal Enhancement (IWAENC 2022), Bamberg, Germany, Sep. 2022, pp. 1-5.

  3. Elvander F., Ali R., Jakobsson A., van Waterschoot T., "Offline Noise Reduction Using Optimal Mass Transport Induced Covariance Interpolation", in Proc. of the 27th European Signal Processing Conference (EUSIPCO), A Coruña, Spain, Sep. 2019, pp. 1-5.

  4. Ali R., van Waterschoot T., Moonen M., "Using partial a priori knowledge of relative transfer functions to design an MVDR beamformer for a binaural hearing assistive device with external microphones", in Proc. of the 23rd International Congress on Acoustics (ICA), Aachen, Germany, Sep. 2019, pp. 1-8.

  5. Ali R., van Waterschoot T., Moonen M., "MWF-based speech dereverberation with a local microphone array and an external microphone", in Proc. of the 27th European Signal Processing Conference (EUSIPCO), A Coruña, Spain, Sep. 2019, pp. 1-5.

  6. Ali R., van Waterschoot T., Moonen M., "Completing the RTF vector for an MVDR beamformer as applied to a local microphone array and an external microphone", in Proc. of the International Workshop on Acoustic Signal Enhancement (IWAENC), Tokyo, Japan, Sep. 2018, 5 p.

  7. Ali R., van Waterschoot T., Moonen M., "Generalised Sidelobe Canceller for Noise Reduction in Hearing Devices using an external microphone", in Proc. of the 2018 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), Calgary, Canada, Apr. 2018.

  8. Ali R. Moonen M., "A contingency multi-microphone noise reduction strategy based on linearly constrained multi-channel wiener filtering", in Proc. of the 2016 IEEE International Workshop on Acoustic Echo and Noise Control (IWAENC 2016), Xi'an, China, Sept. 2016, 4 p.

Ph.D.-theses

  1. Ali R., Multi-microphone speech enhancement : An integration of a priori and data-dependent spatial information, PhD thesis, Faculty of Engineering, KU Leuven (Leuven, Belgium), Nov. 2020, 350 p.

Internal Reports

  1. Ali R., van Waterschoot T., "A frequency tracker based on a Kalman filter update of a single parameter adaptive notch filter", Internal Report 23-57, ESAT-SISTA, KU Leuven (Leuven, Belgium), 2023. Accepted for publication in 26th International Conference on Digital Audio Effects DAFX 2023.

  2. Ali R., Dietzen T., Scerbo M., Vinceslas L., van Waterschoot T., De Sena E., "Relating wave-based and geometric acoustics using a stationary phase approximation", Internal Report 23-56, ESAT-SISTA, KU Leuven (Leuven, Belgium), 2023. 10th Convention of the European Acoustics Association Forum Acusticum 2023.

  3. Blochberger M., Elvander F., Ali R., Ostergaard J., Jensen J., Moonen M., van Waterschoot T., "Distributed Adaptive Norm Estimation For Blind System Identification in Wireless Sensor Networks", Internal Report 22-112, ESAT-SISTA, KU Leuven (Leuven, Belgium), 2022. Accepted for publication in IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) .

Contact information