Kirsi Ihalainen Acoustic Interior Design for Airport Lounge

Acoustic Interior Design

Wood hanging from the ceiling sings at the frequencies of the forest.

Helsinki Airport, Kainuu Lounge, Gate 31, 5th of June 2014 – end of March 2015

Comments, experiences and photos of you with the installation can be posted with #FinnForestFreq

The installation sounds are recorded in a Finnish forest in Vesilahti, Finland. The top most heard frequencies in the forest are selected for each channel. The sounds have been analyzed and according to this information their dominating frequencies have been selected. These frequencies are played back in the installation through sound actuators that are placed inside wood. The actuators make the wood resonate and vibrate: the sound will come from the wood itself making it the speaker. Also Finnish animal sounds are heard occasionally in the space.

Acoustic Interior Design – using Invisible Speaker Audio Technology

In total the sound installation has 8 audio channels with 8 pieces of pine deadwood. The pieces of wood hang from the ceiling are sound enabled using Feonic Invisible Speakers. This audio technology uses high power but low amplitude vibration speakers to turn surfaces into speakers.

Together with the wood the frequency sounds and animal sounds will recreate a space sounding like a Finnish forest.

Finnish Forest Frequencies-­ sound installation has been exhibited previously at Spiral Garden in Tokyo, Japan in May 2014.

The acoustic interior design is sponsored by Feonic Technology and Aalto University.

An English press release about the project can be found at

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