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Assembly and Characterization of an External Driver for the Generation of Sub-Kilohertz Oscillatory Flow in Microchannels
Published on: January 28, 2022
The rotary subwoofer: a controllable infrasound source.
Joseph Park1, Milton Garcés, Bruce Thigpen
1Infrasound Laboratory, University of Hawaii, Kailua-Kona, Hawaii 96740, USA. jpark@isla.hawaii.edu
The Journal of the Acoustical Society of America
|April 10, 2009
Summary
A novel rotary subwoofer achieves high infrasonic sound pressure levels by generating greater acoustic particle velocities than conventional devices. This study presents performance data and a predictive model for this innovative acoustic transducer.
Area of Science:
- Acoustics
- Mechanical Engineering
- Signal Processing
Background:
- Conventional subwoofers face limitations in projecting low-frequency infrasonic signals at high sound pressure levels.
- High acoustic particle velocities are crucial for achieving significant sound pressure levels in acoustic transducers.
Purpose of the Study:
- To characterize the measured performance of a novel rotary subwoofer.
- To develop a predictive model for the sound pressure levels generated by the rotary subwoofer.
Main Methods:
- Experimental measurement of acoustic performance metrics.
- Development of a physics-based model to correlate input parameters with output sound pressure levels.
Main Results:
- The rotary subwoofer demonstrates the capability to project infrasonic signals at high sound pressure levels.
- Measured acoustic particle velocities are significantly higher compared to conventional transducers.
- A model is presented that accurately predicts the sound pressure levels based on rotary subwoofer characteristics.
Conclusions:
- The rotary subwoofer represents a significant advancement in acoustic transducer technology for infrasound generation.
- The developed model provides a valuable tool for designing and optimizing systems utilizing rotary subwoofers.
- This technology has potential applications in areas requiring high-intensity infrasound projection.
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