Category: General

Baltic-Nordic Acoustics Meeting 2022

On May 9-11 2022, Aalborg hosted the bi-annual Baltic Nordic-Acoustic Meeting (organized by the Nordic Acoustic Association), which this time is merged with the EUROREGIO (organized by the European Acoustics Association). The conference brought together academics, engineers, consultants, and other practitioners in the wide field of acoustics. Some of the really interesting presentations are described […]

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Thermally Activated Building Systems (TABS) and acoustics

Sustainable building practices are here to stay and the number of building projects involving Thermally Activated Building Systems (TABS) is growing rapidly. However, from an office worker’s perspective, exposed concrete walls and ceilings create acoustic environments where it’s virtually impossible to communicate and concentrate. This detailed TABS Knowledge Guide explains how acoustic ceiling coverage impacts cooling […]

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Ventilation through acoustic ceilings – What is diffuse ceiling ventilation?

Designing a holistic indoor environment can be challenging. It will often entail several compromises between quality of different aspects of well-being. It is extremely rare that a solution comes along that both enhances indoor comfort, reduces complexity of design while also saving money and lowering emissions. It definitely is extremely rare, but it happens. Diffuse […]

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Nuanced room acoustics: Technical discriptors

Room acoustics is more nuanced than what is specified in most national requirements and regulations. If you, for example, wish to create a good sound environment in an open office environment, it is often better to consider multiple parameters and not merely the absorption area or reverberation time. The four primary technical basic terms that […]

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The basics of room acoustics: Theory & terms

We at Acoustic Bulletin writes for both acousticians and sound enthusiasts of all types and levels of experience. This post is for anyone who is just entering the field of room acoustics. It contains only very simple and basic descriptions of the the main terms, but should provide enough detail to give you a firm […]

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The soundscape design pyramid: A design aspect hierarchy model

There are many factors contributing to the quality of a sound environment. Especially in complex rooms  like open offices, hospitals and learning environments. It is therefore important to have a clear understanding of how the different aspects of a design should be prioritised in relation to each other to ensure a high-quality outcome. Failing to […]

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EIAS 2015 throwback: Four presentations on room acoustic descriptors

In anticipation of the next Ecophon International Acoustic Seminar (EIAS) we bring you these 4 presentations on acoustic descriptors from EIAS 2015. Much in the world has changed since 2015, but the need for more technical descriptors in evaluating room acoustic quality is not one of them. Technical objective descriptors provides us to more accurately […]

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Study interview: The effect of absorbers and screens on the decay of speech in offices

What exactly can you expect from different kinds of acoustic treatment? Which types of treatment should be prioritised and how does one treatment affect the other? In this post we interview Dr. Valtteri Hongisto about a unique and comprehensive study that provides new insights into effective acoustic design of offices. Researchers Valtteri Hongisto, Jukka Keränen […]

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Guest post: Hearing and Listening with Human Ears

Marcia Jenneth Epstein, Ph.D. has once again contributed to Acoustic Bulletin with this guest blog post. We appreciate your work, Marcia! Read more about our guest blogger and find her other post here. Hearing is our ”second sense”. Phrases used in Western culture to demonstrate understanding – at least in English – are often visual: […]

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Listening tests in room acoustics

Last June 24th, Daniel de la Prida defended his PhD thesis [1] at the Technical University of Madrid (Spain). His research focused on the assessment of the subjective perception both in architectural and environmental acoustics. In the following, a summary of Daniel de la Prida’s research (mostly focused on room acoustics) is given. All the […]

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