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BTCPianoTuner / BTC Piano Tuner 🎹⚡️⛏
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2024-06-01 17:15:41

BTCPianoTuner on Nostr: In 1937, the International Standards Organization at the World’s Fair in Paris ...

In 1937, the International Standards Organization at the World’s Fair in Paris created a Comité that came up with acoustic vocabulary, measurements, and set a standard pitch of “A” at 440 cycles per second. This Comité was known as the CIA 👀
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npub1xuam6elydvex3r80vz4frjy5gacanzj09hpldumlny8ltcqq6yxsatkdnq