Ultra-broadband acoustic metamaterial lens for loudspeaker directivity control
Xiuyuan Peng, Gregory Hernandez, Steven A. Cummer, Falk-Martin Hoffmann, Junfei Li · AIP Publishing · 2025
An ultra-broadband acoustic metamaterial lens enables passive loudspeaker directivity control across wide frequency ranges.
Plain English summary
Why this matters
Key findings
- An ultra-broadband acoustic metamaterial lens is presented for loudspeaker directivity control.
- Omnidirectional emission is reported between 1000 and 10,000 Hz with a 4-in full-range driver.
- A broadband sound-focusing lens is reported with consistent directivity between 2000 and 20,000 Hz.
- The method is described as advantageous for broadband passive control of loudspeaker directivity.
Limitations
The abstract does not specify design details, performance metrics beyond frequency/directivity claims, experimental setup details, efficiency, size/weight constraints, or comparisons to prior lenses beyond the stated bandwidth limitation.
Publication
- Publisher
- AIP Publishing
- Publication date
- October 13, 2025
- Research type
- Paper
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