When Sara plays the tuba over the telephone with her mother, they play in perfect sync. Presumably her mother lives in the UK. Given the distance between the UK and the US West Coast, the time it would take for the signal to travel back and forth would make it very difficult to stay synchronized. Her mother would have to play the keyboard early to account for the signal travel time, so it would appear synced on Sara's end as it does in the movie. But her mother would hear Sara playing with double the delay. Plus, if they both have their phones on speaker, the sound of the instruments would also start to reverb over the call.
Since 1988, with transoceanic fiber-optic cables, the delay is under 1/10th of a second which the human brain is too slow to notice.
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05/03/2025 alle ore 07:08
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