AES $BEl5~%3%s%Y%s%7%g%s(B 2009
Paper Session A2
A2 — $BEE5$2;6AJQ494o(B
Friday, July 24, 9:15 — 10:35
$B:BD9(B: $B@>8}(B $BIR9T(B (NHK)
A2 - 1 Distributed Mechanical Parameters Describing Vibration and Sound Radiation of Loudspeaker Drive Units
The mechanical vibration of loudspeaker drive units is described by a set of linear transfer functions and geometrical data which are measured at selected points on the surface of the radiator by using a scanning technique. The mechanical vibration can be summarized to a new quantity called accumulated acceleration level (AAL) which is comparable with the sound pressure level (SPL) if no acoustical cancellation occurs. These derived parameters are the basis for modal analysis and make the relationship between mechanical vibration and sound pressure output more transparent. Finally, the usage of the distributed parameters within finite and boundary element analyses is addressed and conclusions for the loudspeaker design process are made.
A2 - 2 $BC10l;X8~@-D69-BS0h%^%$%/%m%[%s$N@_7W$H3+H/(B