Freshly fallen snow is an effective sound dampener. The explanation lies in the structure of the snowflakes. Freshly fallen snow tends to have a soft and loose texture. This characteristic allows the snow to deform under the pressure of sound waves, dissipating energy and reducing the reflection of sound. ”There is nothing in the world […]
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A major survey in France : Noise in Bars & Restaurants
At EIAS 2023 a poster session was presented and lots of great studies were shared. Studies from Education, Healthcare and Office segments were covered at the same time as studies about sound environments in restaurants and bars. A poster including a survey from France revealed that restaurant owners risk lower income because of noise. The […]
Research and Development in Acoustics at Ecophon, EIAS 2023
In May 2023, it was again time for EIAS, Ecophon International Acoustics Seminar. We were utterly proud to once more host an event, focusing on development in room acoustics AND sharing a great time with some of the brightest minds within the field of acoustics. A bit more than 200 guests and 25 speakers from […]
Hungary’s Journey Towards Standardization in Room Acoustics: An Interview with Csaba Huszty
Standardization in Room Acoustics Room acoustics and electroacoustic systems are critical components of building design that can impact the quality of sound and speech intelligibility in various environments, from concert halls to classrooms and offices. In Hungary, the journey towards standardization in this area began over a century ago, but it wasn’t until 2020 that […]
The large Epidauros Theatre – how did it sound with an audience and skene?
For practical reasons, most measurements of acoustics in ancient Greek theatres are made without an audience. Under those conditions much of the sound reaching the listener is in the form of reflections from the curved stone risers that form the seating. These reflections would be attenuated or eliminated by the audience. Let´s explore the Epidauros […]
Listening tests: linking objective room acoustic parameters with subjective human perception
Daniel de la Prida from Carlos III University in Madrid presented about his study into listening tests. He focussed on tests that can be used for linking objective room acoustic parameters with subjective human perception. Such tests have been in use for many years. However, different research usually employs different test protocols, with different operational […]
Acoustics for restaurants in Brazil – Overview and a Study case
Brazil is known as a country with rich and varied gastronomy. Studies from 2022 indicate that there are about 736,000 restaurants in Brazil, and 56% were opened in the last three years. São Paulo, is the largest city in the country and was selected by Traveller’s Choice as the seventh-best gastronomic destination in the world. […]
Wave-based virtual acoustics integrated into the building design process
Finnur Pind is a co-founder and CEO of Treble Technologies. At EIAS 2023 he presented the background of wave-based virtual acoustics and the merits of what they claim to be a paradigm shift within the area of virtual sound. An acoustic design platform called Treble. Wave-based virtual acoustics The core of the platform, as described, […]
The effect of sound absorbers and diffusers in ordinary public rooms
Introduction Emma Arvidsson, Researcher and PhD ”Acoustic Design with Regard to Human Perception” presented her recent Phd study at EIAS2023. She focused on the objective and subjective aspects of acoustic design in ordinary rooms. Aiming to optimize room acoustics and examining the effects of different sound absorbers and diffusers. ‘Acoustic design plays a crucial role […]
Problems of Absorption Coefficients as input data for room acoustic simulations
Cheol-Ho Jeong, Associate Professor of acoustics at the Technical University of Denmark, talked at EIAS 2023 about the problems of using absorption coefficients as input data for room acoustic simulations. Cheol-Ho has since his professorship in 2011 among many things engaged himself regarding the difficulties surrounding the use of the absorption coefficient, as defined by […]
