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Author: Emil Ærenlund

Floating Acoustic Tiles – A good Alternative?

By Emil Ærenlund Posted on August 22, 2024 Posted in Room Acoustics, Sound Absorption

Does floating acoustic ceiling panels/tiles absorb sound more effetely than a ‘normal’ acoustic ceiling? You probably already know the answer – “It depends.” A ‘floating’ acoustic panel is essentially just suspending an acoustic material in singular panels from the ceiling. …

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Impact Noise And Typical Office Walls

By Emil Ærenlund Posted on August 22, 2024 Posted in Building Acoustics, Flanking sound, Impact Noise

Folding walls are often seen in office buildings. While a folding wall Can be a great solution for making a flexible room, it does come with some acoustic weaknesses.One of these weaknesses is the impact noise if wrongly handled.The Rail …

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Standing Waves and Room Modes

By Emil Ærenlund Posted on August 22, 2024 Posted in Room Acoustics

Standing waves occuring In a rectangular room are commonly called ‘Room Modes’ and Can be split into 3 categories Axial modes – one dimensional modes occuring either along the length, width or height of the Room. Also showcased In the …

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Sound Leakage

By Emil Ærenlund Posted on August 22, 2024 Posted in Flanking sound, Noise, Sound Insulation

Be aware of acoustic weakness and help avoid poor Sound reduction performance! In walls we often find electrical outlets. If these outlets are placed right up against eachother as shown below, they may result in a weakness in the wall …

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How noisy is your home?

By Emil Ærenlund Posted on August 22, 2024 Posted in Noise

Do you ever think about how noisy your home really is? With an increase in electrical appliances in our homes, it can be hard to escape the noise inferno. The kitchen will most typically be the most noisy room in …

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Facade sound reduction and weakest link

By Emil Ærenlund Posted on August 22, 2024 Posted in Noise, Sound Insulation

Quick tip: Facades – When designing for optimal noise reduction and sufficient acoustic quality, remember to look for the weakest link in facades. Especially if the facade is towards a noisy Road.The weakest link, typically being the windows, will very …

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‘Noise Thermometer’

By Emil Ærenlund Posted on April 29, 2024 Posted in Noise

You have probably seen it sketched out before, a ‘noise thermometer!’.Allow me to give you my version, The Three P’s… my best try at making it memorable Joking aside, noise levels is a serious topic, especially the understanding of the …

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Mass Law and Mass Air Mass Resonance

By Emil Ærenlund Posted on April 29, 2024 Posted in Building Acoustics, Sound Insulation

The mass for predicting Sound Insulation. Looking into sound insulation prediction, you Will most definitely be met with the Mass Law. While the Mass Law may not offer great accuracy on its own (as sketched below for an acoustically thick …

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Noisy Brew at the office?

By Emil Ærenlund Posted on April 29, 2024 Posted in Noise, Room Acoustics

Does Coffee machines and open Office spaces mix? It depends on the overall noiselevel and peak noise value of the machine, as Well as the distance to the nearest workstations. One Can argue that the slow drip and humm of …

Noisy Brew at the office? Read more »

Reverberation time and Decay Curves

By Emil Ærenlund Posted on April 29, 2024 Posted in Building Acoustics, Room Acoustics

Reverberation time Can be measured with a noise signal or an impulse. Say a noise source is placed In a room and have reached a stationary noise, when the noise source is suddenly turned off, the decay curve can be …

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