Laurent Galbrun

Laurent Galbrun
Heriot-Watt University · School of Energy, Geoscience, Infrastructure and Society

MEng, MSc, PhD

About

33
Publications
4,842
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Citations
Introduction
Dr Laurent Galbrun is an Assistant Professor in Acoustics in the School of Energy, Geoscience, Infrastructure and Society, Heriot-Watt University, Edinburgh (UK). His expertise covers the fields of building acoustics, environmental noise and soundscapes. An engineer, he is experienced both in theoretical modelling and in carrying out experimental work, as well as in carrying out standardised measurements for consultancies.

Publications

Publications (33)
Article
This paper examines the audio-visual interaction and perception of water features used over road traffic noise, including their semantic aural properties, as well as their categorization and evocation properties. The research focused on a wide range of small to medium sized water features that can be used in gardens and parks to promote peacefulnes...
Article
Noise in hospital wards has the potential to slow down the recovery of patients. A comprehensive and systematic analysis of noise levels and noise sources has been carried out in two intensive care units and one high dependency unit in two Edinburgh hospitals (UK). Noise levels L Aeq,1min and L AFmax were measured at 1 minute intervals for 24 hour...
Article
This paper examines physical and perceptual properties of water sounds generated by small to medium sized water features that have applications for road traffic noise masking. A large variety of water sounds were produced in the laboratory by varying design parameters. Analysis showed that estimations can be made on how these parameters affect soun...
Article
This paper examines the modelling of vibration transmission through plate/beam structures typical of lightweight buildings. Key experiments have been carried out on simple structures to identify the applicability and limitations of fundamental theories. The systems tested included a single plate connected along its centre to a beam, two parallel pl...
Article
Airborne sound transmission between adjacent rooms can be predicted using the Standard EN 12354-1 (ISO 15712-1), which is equivalent to a first-order approximation of statistical energy analysis (SEA). This paper analyses airborne sound transmission between adjacent rooms in a masonry building, by comparing results obtained from EN 12354-1 to SEA p...
Article
This paper examines the use of water features for masking irrelevant speech and improving the soundscape of open-plan offices. Two laboratory experiments were carried out, as well as acoustic simulations and field tests. Experiment 1 aimed to identify the preferred sound level of water sounds against irrelevant speech. Experiment 2 examined the aud...
Article
Two ongoing and recurrent debates in the employment of academic staff are (1) how much industry experience should faculty staff have? and (2) what priority is given to research, teaching or both? Such debates take place worldwide and are particularly relevant to vocational subject areas. Through a statistical analysis of circa 200 job adverts for l...
Article
This paper examines the perceived speech intelligibility of English, Polish, Arabic, and Mandarin and, more generally, the soundscape associated to multilingual environments. Listening tests were used to evaluate three acoustic environments (an airport, a hospital, and a café) under three room acoustic conditions defined by a different speech trans...
Conference Paper
Full-text available
Noise masking has proven to be effective in reducing the annoyance of irrelevant speech in open-plan offices, and water generated sounds have been suggested as potential masking sounds. Within that context, this paper examines the use of water generated sounds as a mean of masking irrelevant speech and improving the sound environment in open-plan o...
Conference Paper
Full-text available
Research has shown that noise masking systems can successfully mitigate the detrimental effects of noise in open-plan offices. This paper provides a new approach to noise masking in open-plan offices, through the use of water sounds generated by real water features placed inside a work space. The effectiveness of water sounds in masking noise, espe...
Conference Paper
This paper analyses perceived speech intelligibility and, more generally, soundscape perception associated to four different languages. The research was carried out using listening tests involving sixty native speakers of English, Polish, Arabic, and Mandarin (fifteen participants per language). In the tests, listeners were asked to subjectively ev...
Article
This paper examines space averaging methods applied to structural level differences measured in lightweight building structures (two beam junction and single plate and beam junction). The methods studied include the averaging assuming a constant input force, the averaging based on a constant vibration level across the source element, and the arithm...
Conference Paper
This paper examines structure-borne sound transmission through a T-junction formed by a plywood worktop (source plate) and a lightweight partition. This type of structure is typically found in kitchens, where impact sound originated from a worktop can be responsible for noise complaints in adjacent places. Tests have been carried out for a variety...
Conference Paper
Vibration transmission through plate/beam structures typical of lightweight buildings is examined in this paper. Modelling difficulties are analysed and related to the several modelling choices available, including connection type, beam modelling, modal properties and material properties. A number of key experiments carried out on structures made o...
Article
Vibration transmission through platebeam structures typical of lightweight buildings is examined in this paper. Modelling difficulties are analysed and related to the several modelling choices available, including connection type, beam modelling, modal properties and material properties. A number of key experiments carried out on structures made of...
Article
A study of vibration transmission through a frame typical of timber-framed buildings was undertaken in order to establish whether or not statistical energy analysis (SEA) could be used to model such structures. Examination of individual beam junctions showed that the normal assumption that junctions are rigid was not valid and that the junctions we...

Projects

Projects (4)
Project
To understand the effect changing design elements of sound diffusers have on their diffusing properties.