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Making a rickroll laser: A parametric speaker
Most speakers emit sound in all directions because they are relatively small compared to the wavelength. Audible sounds have wavelengths of up to several meters, so an acoustically "large" speaker might not even fit in your house.
- Points
- 190
- HN comments
- 61
- Submissions
- 1
- Cited by
- 0 commenters
Hardware & ElectronicsTools & Productivity2024
On Hacker News
| Submitted | Title on HN | Points | Comments |
|---|---|---|---|
| Sep 14, 2024 | Making a rickroll laser: A parametric speaker by pabs3 | 190 | 61 |
