| ??? 11/28/07 11:28 Read: times |
#147497 - Speed of sound vs. speed of light Responding to: ???'s previous message |
True, but then "multipath" effects are common with RF comms...
Still, compared to RF, the echo of an acoustic signal can arrive half an eternity after the actual signal. |
| Topic | Author | Date |
| Ultrasound Data Link | 01/01/70 00:00 | |
| Not really ultrasonic. | 01/01/70 00:00 | |
| The other issue ... | 01/01/70 00:00 | |
| Echoes | 01/01/70 00:00 | |
| Speed of sound vs. speed of light | 01/01/70 00:00 | |
| multipath | 01/01/70 00:00 | |
| Signal attenuation is very big | 01/01/70 00:00 | |
| Similarity to IR remote | 01/01/70 00:00 | |
| the cheapest ultrasound transceivers ... | 01/01/70 00:00 | |
| Frequency ? | 01/01/70 00:00 | |
| Fish finder freq. | 01/01/70 00:00 | |
| Miniscule | 01/01/70 00:00 | |
| Thanks - that's useful | 01/01/70 00:00 | |
RC5 should do it | 01/01/70 00:00 |