Reference sounds

Water wall

Water falls directly against hard material which creates a relatively high-frequency sound. The sound is reflected and reinforced against the wall, and once again toned  by the material.

Solbjerg Plads, Köpenhamn

The sea

The sea. Recording from the west coast of Denmark.

Beech hedge

Beech hedge in winter season. Recorded in Solbacken, Malmö.

Aspen tree and birch

Aspen tree and birch. Recorded in Stadsskogen, Uppsala.

Absorption and reflection

Documentation of a central square area with and without snow. Traffic intensity was similar on both occasions.

Snow absorbs sounds, as well as organic soil and peat for example. A greener city therefore gives a lower background noise and creates the best conditions for a more relevant audio environment, where completely new sounds will be able to come out.


Masking of the highway

Simplified simulation of how a roadside area can be experienced, depending on the design of the noise barrier and the vegetation. Exactly the same traffic noise has been used in two different scenarios. Especially aspen and other poplars in windy conditions give a strong masking effect. Visual aspects are also important. A noise barrier that is a completely straight raises associations to the road and the large and fast scale available there. An organic and human scale in the shape gives a naturalness that makes it easier to accept the masking.

Makadam 0-20

What does makadam sound like in the size 0-20?

Recorded by Per Hedfors in Krusenberg as part of the dissertation Site Soundscapes – Landscape architecture in the light of sound

Södervärns bus station, Malmö

Mask / Audio noise at Södervärns bus station, Malmö

A room of water noise creates variation in this traffic-intensive location and moves focus.

Gatukontoret, Malmö stad


Sound is more than just levels. The high noise of Gavleån are draining sounds from the transient road altogether, but the levels still doesn’t seem not to be intrusive.

Alleys of Gamla Stan

Reflection and resonance in narrow alleys reinforces local sounds, while, for example, surrounding traffic is excluded. The alleys also sound different depending on the shape.

Walking and cycling tunnel

The tunnel’s reflections reflect and create a strong boost and clear, almost musical tone when the bikes passes. The sound response provides a contact and interaction with the architecture – you can often hear how children and others try the acoustics with different exclamations. How does concrete sound?

Playground, Kungsgatan, Malmö

Documentation of a playground – a sonotop.

A wide green boardwalk dominates the wide space that Kungsgatan in Malmö constitutes. Kungsgatan is an example of how broader transit routes might look if you choose to prioritize traffic in future cities. A greener city provides many benefits – also acoustically, because the local and relevant sounds come out better.