Acoustics Research Unit
Professor Carl Hopkins
Carl is Head of the Acoustics Research Unit. His research interests include the prediction and measurement of sound and vibration in and around built-up structures, with emphasis on structure-borne sound transmission.
Dr Pyoung Jik Lee
Pyoung Jik is a Lecturer in the Acoustics Research Unit. His research interests include psychoacoustics, soundscapes, environmental noise, speech privacy, impact sound insulation, and room acoustics.
Dr Gary Seiffert
Senior Research Fellow within the Unit. His main areas of expertise are in acoustic instrumentation and measurement techniques. His research interests include work in physical acoustics to investigate the possibilities of using sonic cleaning to dislodge dust and to clean industrial plant that is not easily accessible.
Dr Simone Graetzer
Simone is a Research Associate in the Acoustics Research Unit. Her research interests include speech intelligibility, speech privacy, clear speech, the effects of room acoustics and noise on talkers and listeners, and acoustical aspects of coarticulation.
For more information, visit her staff profile
Professor Barry Gibbs
His research interests include structure-borne sound, machinery noise, vibration and sound insulation. He serves on national and international standards committees and has acted as consultant in room acoustics, environmental noise and for noise control engineering.
Professor David Oldham
His research interests are the fields of noise control in building services, the enhancement of room acoustics by active techniques and computer modelling in acoustics. He is also responsible for liaison with professional institutions.
Recently retired after a distinguished career as an Environmental Health Officer with over 35 years experience of environmental protection and pollution control, Dave is an active member of the Chartered Institute of Environmental Health and the Institute of Acoustics. As Sefton's Environment Section Manager, with responsibility for noise control and prevention, he gained extensive experience of dealing with noise nuisance from a wide range of industrial, commercial and domestic sources and a comprehensive knowledge of the legal, planning and licensing issues associated with noise control. Dave is involved with the provision of CPD courses in environmental noise with Dr Gary Seiffert.
Claire Churchill graduated from the University of Salford with a research MSc in Acoustics, after completing a BSc(Hons), in Physics with Astrophysics from the University of Manchester, and a BEng(Hons) in Engineering covering artificial intelligence and pollution control from the Open University. Having worked in the acoustic test facility at the University of Salford and as a research assistant on sound quality projects funded by DTI and OFCOM, Claire is carrying out research on sound transmission through timber structures as part-time PhD study at EMPA which is funded by the Swiss government, and supervised by Prof. Carl Hopkins.
Nuno Ferreira graduated with a BSc in Civil Engineering Sciences from Universidade Nova de Lisboa (Portugal) in 2008. He completed his MSc in Environmental Acoustics at the University of Salford in 2010. He joined the Acoustics Research Unit in February 2011 as a part-time PhD student under the supervision of Prof. Carl Hopkins. His research focuses on modelling using Finite Difference Time Domain methods (FDTD) to develop and validate the approach for low-frequency room acoustics and cabin acoustics in vehicles.
Marios Filippoupolitis graduated from Patras University with a BEng and MEng in Civil Engineering. He has an MSc in Advanced Structural Analysis of Monuments and Historical Constructions from the Universities of Minho and Padova. Marios completed his MPhil in the ARU on finite element modelling of dowelled timber-joist floors that was funded by the Swiss National Science Foundation (supervised by Prof. Carl Hopkins). Marios is now registered for PhD study on structure-borne sound transmission in fragmented building structures after earthquakes. This is funded by the CDT of the University of Liverpool’s Institute for Risk and Uncertainty and Marios is supervised by Prof. Carl Hopkins and Prof. Ivan Au (Engineering).
Alessia Frescura graduated from the University of Bologna with a Bachelor and Master degree in Architecture and Building Engineering for which her thesis was a collaboration with the Audioscan practice in Barcelona concerning acoustics in eating establishments. Alessia joined the Acoustics Research Unit in October 2017 as an Early Stage Researcher (ESR) in the EU Marie Curie project, ACOUTECT, studying for a full-time PhD on psycho-physiological evaluation of human exposure to floor impact sounds in lightweight buildings. The PhD is supervised by Dr PJ Lee and Prof. Carl Hopkins.
Susumu graduated from RMIT University with first class Honours in his Bachelor of Applied Science degree in 2014. He joined the ARU as a full-time PhD student in March 2015 under the supervision of Prof. Carl Hopkins and Dr Pyoung Jik Lee. His research concerns the prediction of impact sound insulation in heavyweight buildings determined with heavy impact sources and will investigate the use of Transient Statistical Energy Analysis.
Sang Hee Park
Sang Hee graduated from Korea University with a BA in Psychology and subsequently worked as a researcher in the Korea University Medical Centre (Psychiatry Department). Sang Hee completed her MPhil in the ARU on perceptual models to explain the annoyance caused by floor impact sounds in apartment buildings (supervised by Dr Pyoung Jik Lee). Sang Hee is now registered for PhD study on psycho-physiological evaluation of people exposed to floor impact sounds in buildings and is supervised by Dr PJ Lee and Prof. Carl Hopkins.
Steffi Reinhold graduated from the Hochschule Mittweida (University of Applied Sciences) in Germany with a BSc in Physical Engineering that had a focus on Technical Acoustics. Steffi is working on acoustics at the University of Applied Sciences in Stuttgart and joined the Acoustics Research Unit in September 2013 as a part-time PhD student under the supervision of Prof. Carl Hopkins and Prof. Barry Gibbs. Her research focuses on complex time-varying structure-borne sound sources in buildings which forms part of a larger research project funded by the German government.
Thamasha Samarasinghe graduated with a BSc in Mechanical Engineering from the University of Moratuwa in 2016. She is a pending patent holder and her final year project related to biomechatronics although she specialized in thermodynamics, materials and energy engineering in her undergraduate studies. Thamasha joined the Acoustic Research Unit in October 2017 as a full-time MPhil student registered in the School of Engineering under the supervision of Prof. Carl Hopkins, Dr Gary Seiffert and Dr PJ Lee. Her research concerns airflow resistance measurements on porous materials at high temperatures.
Fabian Schöpfer graduated from the University of Applied Sciences in Rosenheim, Germany with a Dipl. Ing. In Interior Engineering and an MEng in Wood Technology. He joined the Acoustics Research Unit in September 2013 as a part-time PhD student under the supervision of Prof. Carl Hopkins and Prof. Barry Gibbs. His research focuses on the measurement and prediction of sound transmission from machinery acting as structure-borne sound sources in timber-frame buildings.
Yicheng graduated from Nanjing University in China with a BSc in Acoustics in 2012 and an MSc in Acoustics from the Chinese Academy of Sciences in 2015 where he worked on active sound and vibration control. He joined the Acoustics Research Unit in 2015 as a full-time PhD student under the supervision of Prof. Carl Hopkins and Dr PJ Lee. His research concerns sound fields inside automotive cabins.