Post #1203891
2026-04-09 07:36 UTC
@dec23k That 750 Hz bell that uses the 750 Hz gap in noise cancellation headphones seems to be all nice and good, until you look at the actual frequencies that the bell emits:
- 1980 Hz (missing sometimes?)
- 5040 Hz
- 9000 Hz
- 13300 Hz
The image below was created using Specdroid while playing the video.
Replies (1)
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@dec23k@mastodon.ie 2026-04-09 12:22
@lenaschimmel So there isn't any 750Hz audible in the video? The 1980 Hz is probably the secondary resonator, missing sometimes maybe because the rider's glove was muting it? The higher frequencies could be harmonics or other resonances.