Simulation and measurement of sound field control in array loudspeaker system

Abstract:
In this paper, the factors affecting the directivity of line-array loudspeaker are studied, such as frequency, the number of dot array elements, the spacing of dot array elements and the way of amplitude weighting, and the relevant theoretical analysis and simulation and measurement are carried out. On this basis, a 200~12800Hz one octave frequency division speaker array system is designed, COMSOL software is used to conduct simulation experiments, and six groups of physical array loudspeakers are made. CLIO is used as a measuring tool to conduct actual experiments in a semi-silenced room, and a sound field model is constructed. The directivity relationship and influencing factors of broadband acoustic tunable directivity loudspeaker array is studied, the test results are statistically analyzed, and the differences between ideal design and actual measurement are summarized.