Musik im Raum - ZKM
Musik im Raum - ZKM
Musik im Raum - ZKM
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fig. 3: The loudspeaker panel<br />
Marije Baalman „How to Control 840 Channels“<br />
fig. 4: Hardware setup<br />
fed to three speakers, where each speaker emits an increasing bandwidth of the sound (first up to<br />
5.5 kHz, second 10 kHz and third 17 kHz), to <strong>im</strong>prove the radiation characteristic of the speaker<br />
panel. To drive these speakers a cluster of 15 Linux computers is used. Each computer computes the<br />
loudspeaker signals for 56 loudspeaker channels. Each computer is equipped with an RME HDSP<br />
MADI sound card. Each MADI output is connected to a MADI to ADAT bridge (RME ADI648),<br />
which is mounted inside the wall, so that the ADAT cables can be kept short (up to 10 meters). The<br />
input to the system is multiplexed to each MADI sound card with the use of MADI bridges (RME<br />
MADI bridge). A general overview of the hardware setup is given in figure 4.<br />
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