4 ms·

I'd imagine fireworks + music would be difficult because of the difference in the speed of sound vs the speed of light, which would explain the out of sync expe

• aloer 6y ago
  Apparently there are software simulations for this. Something like https://www.youtube.com/watch?v=CNjggrxUQ78 https://www.youtube.com/watch?v=CNjggrxUQ78 Not sure at what distance the speed of sound vs speed of light becomes disrupting
  • TheSpiceIsLife 6y ago
    At 343 meters / 1125 feet the sound is going to be about 1 second out of sync with the light, and that's going to sound terrible. Wind direction and atmospheric pressure is going to make a small difference.
• jjk166 6y ago
  You can have fireworks go off such that the light from the next one reaches the crowd at the same time as the sound from the first. Tempo can be adjusted by changing the location/altitude where they go off. Then you only notice something off when you transition between fireworks that sound different, and even that can be mitigated by having transitions where one of the old type goes off simultaneously with one of the new type. You can't really adjust it on the fly, but you can break the show into discrete blocks that are synced to pre-recorded music, for example each song, and trigger each block on a cue to make what looks like a smooth continuous show.