Development of a shaded,beam steered line array loudspeaker with integral ampliication and DSP processing

摘要

The principles of shading,electrical tapering and beam-steering of arrayed transducers are now more accessible and economical through application of Digital Signal Processing (DSP) for tapering,delays and equalisation.The authors describe how DSP techniques were applied in a very brief development period to produce a loudspeaker of modest dimensions and reasonable cost incorporating transducers,processing and amplification electronics within one enclosure,and a PC based GUI for site adjustment of speaker parameters.