Design and directivity measurement of variable-directivity loudspeaker
* Präsentierender Autor
Zusammenfassung:Sound field reproduction is usually conducted by omnidirectional or fixed directivity loudspeaker arrays. Preceeding investigations show that better reproduction performance can be achieved in the listening area when variable-directivity loudspeakers are used, while at the same time the sound field outside of the array can be controlled. Therefore, this study presents the design of a variable directivity loudspeaker using a combination of a monopole and a dipole. Directivities of the dipole part, monopole part and the whole loudspeaker are measured independently in a hemi-anechoic room using a turntable. Directivity control settings were measured and compared against theoretical expectations. Furthermore, the performance of a 32 loudspeaker array is evaluated.