Reverse Doppler Effect of Sound
Sam Hyeon Lee, Choon Mahn Park, Yong Mun Seo, Zhi Guo Wang, Chul, Koo Kim
TL;DR
This paper reports the experimental observation of the reverse Doppler effect in a double negative acoustic metamaterial, demonstrating unique wave behavior with negative phase velocity and positive group velocity.
Contribution
It presents the first experimental demonstration of reverse Doppler effect in acoustic metamaterials with negative phase velocity.
Findings
Frequency down-shift for approaching source
Frequency up-shift for receding source
Metamaterial exhibits negative phase velocity
Abstract
We report observation of reverse Doppler effect in a double negative acoustic metamaterial. The metamaterial exhibited negative phase velocity and positive group velocity. The dispersion relation is such that the wavelength corresponding to higher frequency is longer. We observed that the frequency was down-shifted for the approaching source, and up-shifted when the source receded.
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.