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Did they somehow find a way to make a long tap (e.g. slide something against the radiator for a continuous signal) or did they agree on two different kinds of s
by kqr 10mo ago
Did they somehow find a way to make a long tap (e.g. slide something against the radiator for a continuous signal) or did they agree on two different kinds of short taps? (Or do the pipes resonate for long but can be dampened by hand to produce a short tap?)
- cwillu 10mo agoI believe the usual thing is to essentially encode it by the spaces between the taps, rather than the taps themselves.
- kqr 10mo agoBut then how does one distinguish between letters? Something like "ETA" would be difficult to tell apart from "II".
- qingcharles 10mo agoI used this: https://en.wikipedia.org/wiki/Tap_code https://en.wikipedia.org/wiki/Tap_code