| 摘要 |
PURPOSE:To generate sound with feeling of distance almost without distortion, by providing two orthogonal acoustic amplifying plates and a support plate and producing acoustic resistance, delay sound an tweet phenomena. CONSTITUTION:A speaker fitting hole 3 and a duct hole 4 are opened on a buffle plate 2. A duct 6 is projected backward so that the duct 4 can be enclosed to form cubic opening of the duct 4. The 1st amplifying plate 13 is projected backward to the hole 3 of the duct 6. A support plate 16 is projected backward between the holes 3 and 4 of the buffle plate 2, and the 2nd amplifying plate 17 is projected downward to a direction almost orthogonal to the plate 13 from the rear end of the plate 16, and the lower end ridge is closed to the plate 13 to form a gap b. Through this constitution, the plate 16 acts like an acoustic resistance to sound pressure from the back of a speaker 5, and a type of delay sound is formed through the vortex of the sound pressure. Simultaneously, with the tweet phenomenon at the gap b produces new sound. |
