Online Exclusives

Freudenberg's Soundtex reduces noise in high traffic areas

By Karen McIntyre, senior editor | September 10, 2013

Airports, train stations add porous material to ceiling installations.

Shenyang Taoxian International Airport has used Freudenberg’s Soundtex technology to reduce noise in the service halls in a recent expansion. With more than 11 million passengers per year, Shenyang Taoxian is a regional hub for China Southern Airlines.
To reduce noise in the service halls and keep aircraft noise out of the building, the airport built 80,000 square meters of Soundtex material into the metal ceiling. The 0.2 mm thick substrate improves room acoustics and shortens reverberation time, according to Perry Liao, sales responsible for SoundTex and Freudenberg & Vilene in Suzhou. The expansion at the airport was inaugurated in mid-August.
Favored in airport buildings for its effective sound absorption, simple installation and lack of harmful substances or flammability, Soundtex is a porous sound-absorbing material, which converts sound energy into thermal energy by creating friction between the oscillating particles of the sound-propagating medium (air) and the strucutre of the porous material. In addition to sound absorption, Soundtex features a low material thickness meaning substantial savings in transport and storage, high running lengths, cost-efficient installation, a reduced risk of condensation water forming in the ceiling cavity and compatibility with integrated cooling and heating systems.

Soundtex has previously been used in projects in highly-frequented areas all over the world including the Rajiv Gandhi International Airport in Hyderabad, India or at the main Station in Berlin.