Mike Brookes’s research concentrates on the application of signal processing algorithms to speech and image processing and to software radio systems. He combines expertise in signal processing and digital system design and is interested both in the development of new algorithms and in their real-time hardware implementation.
Patrick Naylor’s interests are in the areas of speech and audio signal processing and he has worked in particular on adaptive signal processing for acoustic echo control, SIMO/MIMO acoustic system identification and equalization, classification including speech and speaker recognition, multi-channel speech enhancement and speech production modeling.
Alastair’s research interests lie in the field of spatial audio and room acoustics. He is working on the CLEAR project which will employ audio analysis and speech dereverberation in law enforcement applications.
EPSRC Research Fellow
Christine Evers’s research interests are in the area of Bayesian signal processing. She is awarded an EPSRC Postdoctoral Research Fellowship to work on “Acoustic Signal Processing and Scene Analysis for Socially Assistive Robots”, involving acoustic SLAM, multi-source tracking, and sensor fusion.
James’ research is focused on estimation of acoustic parameters such as reverberation time, direct-to-reverberant energy ratio, and clipping from speech degraded by additive, convolutive, and non-linear degradations.
Sina’s research interests are in the field of audio signal processing specialised in Spatial Audio and Room Acoustics. He is working on Source Localization for Spherical Microphone Arrays.
Leo’s research is in the area of speech enhancement. He is currently investigating methods for improving the intelligibility of very noisy speech signals.
Costas’s research interests lie in the field of audio signal processing. He is currently working on an interdisciplinary project which will employ audio analysis on knee acoustic signals in order to identify osteoarthritis and assess the disease severity on the knee joints.
Wei’s research is in the field of microphone array speech signal processing. He is currently working on speaker localisation in reverberant environments. Wei is also interested in speech enhancement and sound source separation by using single/multi-channel algorithms.
Nikolaos’s research is in the area of speech enhancement and noise reduction. Specifically, Nikolaos focuses on the enhancement of noisy speech corrupted by additive noise in low SNR levels using mathematical models in the time-frequency domain.
Constantinos’s research is in the area of dereverberation. The long-term research aim is to suggest novel dereverberation methods based on machine-learning algorithms and statistical-methods which exploit structure in data.
Peter’s research is in acoustic imaging. The aim is to develop a technique to identify objects based on their surface texture by analysing the scattering of acoustic waves when received by a sensor array.
Enzo De Sena
Postdoctoral Researcher, KU Leuven, Dept. of Electrical Engineering (ESAT), STADIUS Center for Dynamical Systems, Signal Processing and Data Analytics, Leuven, Belgium
Enzo’s research interests are in the field of multichannel audio systems, psychoacoustics of spatial hearing, room acoustics, and microphone array processing.
Gema Piñero (April-July 2016)
Assoc. Prof., Inst. Telecommunications and Multimedia Applications, Polytechnic University of Valencia, Spain.
Gema’s research interest is in applications on wireless acoustic sensor networks (WASN) with multiple loudspeakers: crosstalk cancellation, active noise control and personal sound zones.
Benjamin Cauchi (April-September 2015)
PhD Student, Fraunhofer IDMT, Oldenburg, Germany
After visiting us in 2012, Benjamin returned to Imperial to pursue his work on speech enhancement in reverberant conditions.
His research interests lie in dereverberation algorithms and their evaluation using both instrumental and subjective measures.
Niccolò Antonello (April-September 2015)
Niccolò’s research interests lie in room acoustics impedance identification, dereverberation, source localization, sound reproduction and multi-zone sound control in reverberant environments using optimization algorithms.
Christoph Nelke (October-November 2014)
PhD Student, Institute of Communication Systems and Data Processing, Aachen, Germany
Christoph is working on the enhancement of speech signals which are disturbed by wind noise.
Renata Coelho Borges (April-October 2013)
PhD Student, Digital Signal Processing Research Laboratory, Federal University of Santa Catarina, Brazil
Renata’s research is in the area of biomedical signal processing, specifically for hearing aids. It focuses on active noise control and adaptive filters for reducing the occlusion effect and acoustic feedback.
Amir Muaremi (March-August 2010)
MSc Student, ETH Zurich, Switzerland
Amir’s research interests are in clipping detection and restoration for speech signals.
Christian Fischer Pedersen (May-June 2010)
Research Postgraduate, Aalborg University, Denmark
Christian’s research interests are in deconvolution and estimation of voice source and vocal tract filter characteristics in speech. Previous research topics include user centric design methods for mobile and wireless systems, and automatic finite element mesh generation.
Rudy Rotili (January-June 2010)
Research Postgraduate, Università Politecnica delle Marche, Italy
Rudy’s research interests are in speech enhancement, blind system identification and approximate channel equalization.
Former Group Members
Hana’s research is addressing the important field of signal processing and, in particular, is investigating the relationship between metrics and perception of reverberation in audio and acoustics. This topic has applications to mobile communications with hands-free modality as well as desktop conferencing and telepresence.
Vinesh’s research dealt with the application of signal processing algorithms to speech processing particularly to the field of single-channel speech enhancement. Some of the themes explored are signal representation, eigenanalysis of speech signals, estimation techniques, minimum statistics, and speech modelling.
Research Postgraduate, Research Assistant
Clément’s research is focused on single-channel estimation of reverberation parameters as well as single-channel online dereverberation optimized for a set of defined scenarios. He also works on quantifying the impact on speech intelligibility of combined noise and reverberation.
Research Postgraduate, Research Assistant
Jason’s research is focused on acoustic signal processing and he has worked in particular on geometric inference, microphone arrays, blind system identification (SIMO/MIMO) and source localization. He was involved in the SCENIC project.
Nick’s research interests are in reverberant speech enhancement, blind system identification, approximate channel equalization, multirate signal processing and AR modeling of reverberant speech. He was involved in the CLEAR project.
Sira’s research focuses on the enhancement of low-quality speech signals. She will concentrate on improving speech intelligibility by means of a time-frequency binary mask.
Jon’s research interests are voice modelling and front-end processing for speech- and speaker recognition and pattern recognition techniques such as Markov Modelling applied to those tasks. More specifically he is interested in seeing how different components in the speech signal, such as closed and open phases in voiced speech and stops and fricatives in unvoiced speech contribute to the recognition process. Jon is currently an Assistant Professor at Reykjavik University, Iceland.
Research Associate, Research Fellow
Emanuël Habets’s research interests are in the areas of speech and audio signal processing, and he has worked in particular on speech dereverberation, microphone array processing, echo cancellation and suppression, system identification and equalization, and localization and tracking of stationary and moving acoustic sources. He is currently a professor in Perception-based Spatial Audio Signal Processing at International Audio Laboratories Erlangen (a joint institution of Fraunhofer IIS and the University of Erlangen-Nuremberg).
Mathieu’s research is focused on investigating inverse problems in a multi-channel context using estimates of channel identification error level and signal-to-noise ratio (SNR).
Research Postgraduate, Postdoctoral Researcher
Daniel’s research is in the field of spherical microphone arrays, and their potential application to parameter estimation (direction of arrival, signal-to-diffuse ratio) and speech enhancement (noise reduction and dereverberation).
Hamza’s research is in the field of array signal processing, specifically in the development of algorithms for improved signal acquisition in reverberant and noisy environments.
Andy Khong’s research interests were mainly in the area of adaptive algorithms both in time and frequency domains, as well as their analysis with applications to single and multichannel acoustic echo cancellation and
speech enhancement. He was also working on multi-modal sensor fusion for parameter security systems. He is currently an Assistant Professor at the Nanyang Technological University, Singapore.
Felicia’s research is in the area of speech enhancement, and in particular, focuses on the dereverberation of acoustic signals through equalization of a room’s acoustic impulse responses.
Shawn’s research interest is mainly on the blind multichannel acoustic system identification with robustness to common zeros, which has been considered as one of the channel identifiability conditions so far. Shawn likes everything relevant to cars, although he hasn’t been able to afford a car himself. He could also be helpful when specific softwares, eBooks or even computer games and latest movies are needed.
Research Postgraduate, Research Associate
Pradeep’s research focused on the development of time and frequency domain adaptive filtering algorithms, that are robust to changes in the sparseness of the impulse response.
Uttachai’s research focused on design and analysis of gradient-based algorithms for blind signal separation (BSS) and blind signal extraction (BSE). He is now back in Thailand for the next step of his career.
Pablo’s research is targeted towards the study of the impact of reverberation on automatic speech recognition (ASR) and design of speech recognition techniques robust to reverberation.
Dushyant’s research is in the area of Speech Enhancement and he will be developing new algorithms that take into account useful knowledge about the speech signal to be enhanced. He worked as part of a small team investigating new techniques for Speech Enhancement. He is now a researcher at Nuance Communications in Marlow, UK.
Richard’s research focuses on the use of multiple microphone arrays and the area of spatial filtering; in particular the capture and generation of sound in isolated volumes.
Mark’s research area is multichannel speech processing. He enjoys seeing theory come to life in real-time hardware, both for his research and his hobbies. As a keen musician he likes to spend time singing in choirs and jamming on the piano in his band down in the EE basement. When he’s doing none of the above he can usually be found playing snooker, in his garage tinkering with his car or on his motorbike blasting round Surrey’s quick B-roads. He is now a post doctoral researcher at Microsoft Research.
Manolis is interested in adaptive filtering and matrix analysis. In his free time he practices at aikido and reads crime novels. Manolis is currently a postgraduate researcher at Johns Hopkins University.
Yu’s research is in the area of speech enhancement, and specifically, he focuses on the enhancement of noisy speech corrupted by additive noise using mathematical models in the modulation domain or time-frequency domain.
Jimi’s research interests are in audio signal processing, but as our ears play many tricks on us, he believes we have to analyze the signal from the view of our auditory systems instead of visualizing it. In his spare time he likes to make music and perform at small gigs. He is also a die hard fan of soccer, basketball, American football and baseball. And what ever time is left he enjoys cooking, fashion and hair design.
Wancheng’s research focused on fast equalization of room acoustics, which is robust to system identification errors.