| 摘要 |
PROBLEM TO BE SOLVED: To provide a resonant trunk radiation type speaker capable of radiating sound waves of good quality in an acoustic field abound with presence by making the radiation direction of reproduced sound waves a three-dimensional space, twisted back and forth, laterally, and vertically, and further, making a resonance point resonating with a specific frequency dispersed.SOLUTION: Both lower ends of a Moebius ring type resonant trunk 1 are connected to both upper sides of a box-like resonant trunk 2, and a cavity 5 of the box-like resonant trunk 2 is communicated with a cavity 4 of the Moebius ring type resonant trunk 1. A square cross section of the Moebius ring type resonant trunk 1 is twisted along a ring circumferential direction, and a square ABCDat a lower end connected to one side of the box-like resonant trunk 2 is inverted by 180 degrees relative to a square ABCDon the other side. The vibration applied to the box-like resonant trunk 2 by a voice coil 111 and a magnetic circuit 112 is transmitted to the Moebius ring type resonant trunk 1 as well, and reproduced sound waves are radiated toward a three-dimensional space, twisted back and forth, laterally, and vertically. |
