This movie demonstrates an open-ear headphone. The sound was recorded by an omnidirectional miniature condenser microphone I am holding. I am exposed to a babble noise consisting of 20 speakers through headphones. The attenuation of the leakage sound exceeds 40dB under the 3 kHz frequency range.

Loud sounds! Interactive measurement of acoustic properties using several test sounds. The tool is accessible in my GitHub repository below.
github.com/HidekiKawaha...
A MATLAB live script makes any sounds relevant for acoustic measurement test signals.
interactiveSafeGuardingOCOCO.mlx
Have fun!

Preview of my presentation at Cocosda 2024. The pdf copy of this presentation has links to related materials. drive.google.com/file/d/1x2vg...