a device fascinating in both its concept and its application: "Helium Speech Unscrambler" https://d23ikka7d3ekew.cloudfront.net/Manufacturers/Nautronix/Helium-speech-unscrambler.pdf
@whitequark Do you know how divers deal with it while together in a bell?
@robryk nope
QOTO: Question Others to Teach Ourselves An inclusive, Academic Freedom, instance All cultures welcome. Hate speech and harassment strictly forbidden.
@robryk nope