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| Cheap Wavefield Synthesis |
Wavefield Synthesis is a sound spatialisation technique in wich an array of identical loudspeakers is used to physically recreate the sound waves of virtual sound sources. It is an application of the principle that a spherical wave emitted by a sound source may be recreated by secondary sources sitting along the wave front.
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Implementation |
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The sound emitted by the virtual source is fed into one delay line per speaker, recreating the delay between the virtual sound-source and the secondary source (the loudspeaker). The amplitude is reduced to simulate the amplitude reduction of a spherical wave. These geometric calculations are implemented in JAVA and transmitted to SuperCollider3 using the OSC protocol. SC3 receives the messages and interpolates the delay times.
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Setup |
There are 24 PMC DB1-A speakers, which are connected to three Hammerfall HDI-8 D/A converters. These are connected via ADAT to a MOTU 2408 interface. The Macintosh runs SuperCollider3 and the JAVA Application at the same time.
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