Here’s a quick project I had the idea for after reading that the “swear bleep” sound is actually fairly standardized at 1,000Hz.
Using a Teensy & audio shield, I soldered on a microphone scavenged from the junk drawer.
With a half an hour’s tinkering, I had the teensy’s FFT monitoring a few frequency bins around 1,000Hz, and firing the output.
If you’re looking for a bleeped out electronics video, there’s really only one choice of channel.
And what better way to show the indicated signal than Mehdi’s most famous feature:
Here’s a vid of it in action:
I wasn’t expecting this bit, but in hindsight there’s no reason why it shouldn’t. When I was replaying the above video, the detector happily triggered again on the 2nd generation audio:
The Teensy is really a nice platform to make this happen, cheap and very arduino compatible, and there’s a ton of work gone into those audio & FFT libraries. It was a joy to play with.