To create a virtual sound environment by Wave Field Synthesis with a line of loudspeakers surrounding the audience, the Technical University of Berlin equipped a lecture room with 110 of our 8-channel HD2-modules.
The 880-channel audio for the lecture room is processed on 16 WFS-PCs, each one provided with a 64-channel MADI-interface, connecting to local MADI-to-ADAT converters over coaxial cable. An 8-channel ADAT interface embedded in each HD2-module receives the 24-bit audio data via optical fibre.

Installed WFS system

Installation in progress

Single module

Each module contains

• an ADAT interface
• a HD2 loudspeaker management system for loudspeaker equalization and protection
• an Ethernet connection for controlling the module via a remote PC
• 2 x 5 power amplifiers

The HD2 loudspeaker management system provides

• precision limiters in each channel (peak and RMS for the power amp, peak and temp. for the loudspeakers)
• amplitude and phase equalization with FIR filters
• additional IIR filters for room equalization
• remote control via Ethernet, DHCP
• for more details, see this page