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Digital Loudspeaker Arrays Driven by 1-bit Signals

Loudspeaker Arrays driven by digital bitstreams are direct digital-signal to acoustic transducers, usually comprising of a digital signal processing module driving actuators. Current research efforts are focusing on topologies directly driven by multi-bit digital bitstreams. In this work, the above investigations are extended to the case of using 1-bit signals such as Sigma-Delta for driving such topologies, using time and frequency domain analysis. Simulation results will be presented for idealized actuators. Finally, an optimized architecture for such a loudspeaker will be proposed, based on this analysis.

Authors: Tatlas, Nicolas-Alexander; Mourjopoulos, John N.
Affiliation: Audiogroup, Electrical Engineering and Computer Engineering Department, University of Patras, Patras, Greece
AES Convention:116 (May 2004) Paper Number:6036 Import into BibTeX
Session Subject:Signal Processing; Audio in Broadcasting

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