Technical Facilities

Measuring Chambers/Laboratories

  • Semi-anechoic chamber class 1 (6m x 10m x 5m, lower frequency limit 100Hz)
  • Reverberation room (volume 125m3)
  • Electronics laboratory

Measuring Equipment

  • 8 Four-Audio measuring sets, 5 of which are mobile racks 
  • B&K 1/2" and 1/4" microphones for laboratory measurements
  • B&K hand-held spl meter
  • B&K tapping machine
  • Norsonic 229 dodecahedron loudspeaker
  • Norsonic 121 environmental noise analyzer
  • Norsonic 110
  • Norsonic 823-2 sound measuring system
  • Norsonic Nor1220 1/4" measuring microphones
  • Four-Audio robot ELF for the automatic measurement of balloon data of loudspeakers
  • NTI Acoustilizer
  • Rhode & Schwarz UPD for measuring electronics
  • Audio Precision for measuring electronics
  • XY-desk for automatically scanning sound fields in horns and horn drivers

Audio Equipment in the Laboratories

  • Amplifiers: Crown I-Tech 12000 HD, Crown Reference, 2x AD-Systems 2404
  • Controllers: 2x Four-Audio  HD2, 2x Dynacord DSP 244, 2x HK-Audio Firnet

Software

Measurement

  • Monkey Forest for acoustical and electronical measurements
  • EASERA

Simulation

  • EASE
  • EASE Speaker Lab
  • SAOS-NP
  • Matlab
  • BEM solver in Matlab
  • Directivity simulation in Matlab
  • Directivity simulation of mulit-driver loudspeakers in Matlab
  • Bassyst
  • AJ-Horn

CAD

  • Rhino 4
  • Deskproto 5

Computers

  • PC cluster for BEM simulations with 5 CPUs each with 4GB RAM

Prototyping

  • ABS 3D printer Alphacam Dimension (tray size 10" x 10" x 12")
  • CNC milling machine for woodworking
  • CNC milling machine for metalworking
  • Wood workshop