Author(s)

Shanwei Lin

Corresponding Author

Shanwei Lin

Abstract

This study presents a new portable sound system designed for use in various locations, aiming to enhance the unique sound of Eastern and Western performance spaces. We developed novel adjustable fan-shaped acoustic resonators (60°-180° continuous adjustment) featuring a pioneering tri-layer hybrid construction combining paulownia wood frames (structural core), carbonized bamboo panels (damping layer), and frequency-tuned phosphor bronze plates (0.8-2.5mm thickness gradient), creating the first passive, non-electronic system for selective frequency enhancement in cross-cultural performances. You can use between zero and four units at once for the best sound. Computer models indicate that adding more units enhances sound quality, with one unit yielding a 15-20% improvement and three units providing a 30-43% increase in how well the room's sound matches the music style. For example, in Boston Symphony Hall, which normally has a long echo time of 1.86 seconds, three separated units can reduce the echo to 1.06 seconds and increase sound clarity by 11.2 decibels. In the Listening Rain Pavilion, which typically has a short echo time of 0.18 seconds, two or three units can increase the echo to approximately 1 second, creating the richer reverb required for Western orchestras. Our results show that it is most effective to use up to three units, as adding more does not significantly improve the outcome. This approach may help keep performances authentic, without the need for electronic amplification, and support cultural preservation.

Keywords

Multi-Device Acoustic Systems, Cross-Cultural Acoustics, Passive Resonators, Scalable Deployment, Room Acoustic Optimization, Chinese Opera, Western Symphonic Music, Adjustable Fan-Shaped Resonators, Non-Electronic Enhancement, Hybrid Material Acoustics