Comment on Magnetic bass detection?
OwOarchist@pawb.social 1 month ago
Maybe just stick with audio recording, but use a more directional microphone? (And use foam to isolate it from any vibrations in the walls/floor.)
Comment on Magnetic bass detection?
OwOarchist@pawb.social 1 month ago
Maybe just stick with audio recording, but use a more directional microphone? (And use foam to isolate it from any vibrations in the walls/floor.)
Directional gets kinda tricky in the low frequency range :/
OwOarchist@pawb.social 1 month ago
Interferometry, maybe?
Two microphones, side by side. Signals that come from directly in front (or directly behind, unfortunately) will hit both microphones simultaneously. But sounds coming from the side or any other angle will hit each microphone at slightly different times. If you then have a hardware or software solution to filter out any sound waves that don’t match, you’ve got a highly directional microphone that should work well in any frequency range. (Can also use this setup with 3 microphones if it needs to be 3D and filter out noise from above and below as well.)
There are commercially available setups that do this, but in theory it shouldn’t be too hard to build your own, either. I mean, in theory, you could just feed the outputs of both mics through an and-gate transistor into a single output, and that very simple hardware would do the filtering for you – you’ll only get the outputs from when both mics pic up the same sound at the same time.
Thats a very good idea, thank you ill look into it!