Go to this website on different devices (laptops, speakers, etc). Choose different sounds for each. Then press PLAY NOW - the sounds will be synchronized.
*Metronome and delay tools can help synchronize. Note: synchronization depends on the device. Slower devices will have more delay, that's just how it is.
*The 1-2-3-4 sounds are connected, so the speakers should be positioned in a circle or a line. Piano A/B/C should also be separated per speaker.
Sync time: 0.000
No audio
Roundtrip time: 10.00ms
Can't sync? Add manual delay: