| Summary: | 碩士 === 國立屏東科技大學 === 木材科學與設計系所 === 97 === This study used computer simulation of software EASE 4.2 to estimate for the listening room, and investigate effects of interior decoration design and sound sources condition on the sound field. Effects of simulate conditions and scattering coefficient of wooden diffusers of Japanese Cedar for simulate seat on sound field.
Results displayed different parts of decoration room shapes would reduce sound energy reflection on sound field, improvement standing wave on low-frequency band and distributed over even the SPL in medium-high. Sound pressure level of loud-speaker at 80~120 cm had not sound defect on sound field, if sound source angle was 30o, each computer model of sound pressure level would be reduce variance and to show stability trend, clarity had to promote for each simulate seat when decoration ladder-shape of the side wall, it had to promote sound pressure at low-frequency band, and impulse response attenuation to stability on P2 simulate seat. When each conditions import wooden diffusers of Japanese Cedar, it increased absorption properties and reach even distribution of scattering properties at medium-frequency band, compare with rectangle room had diffuse field at short times for listening room, and obvious at the back simulate seats. Computer model import that wooden diffusers of Japanese Cedar of structure for 8 cm in the ceiling of folded plate and collocate decoration concave-shape of the side wall, it would be reduce sound pressure level and distributed over even at each frequency band.
|
|---|
