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Train horn vs police car siren


legsbluetrain

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Nice vids, I believe a siren is much more louder than a train horn in real life. But in any case, it's the Doppler effect that makes things louder than they actually are when they are approaching you.

 

Higher frequencies are more easily heard over lower frequencies. The horns on some trains will deafen you up close.

 

- A

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