5 ms·
If it's sensitive enough to read a heart beat, then surely it can be used as a covert microphone?
by pbhjpbhj 8mo ago
If it's sensitive enough to read a heart beat, then surely it can be used as a covert microphone?
- rcxdude 8mo agodepends on the bandwidth
- rcxdude 8mo agoDepends on the bandwidth.
- Quppi 8mo agoFrom testing, it seems to require me to press my wrists quite hard against the macbook to get a somewhat accurate reading on the heartbeat. Non the less a cool project and I wasn't even aware my macbook has an accelerometer.
- gavinsyancey 8mo agoThe laptop also contains a normal microphone. You can't access this without root; if you have that you have permissions to access the real microphone.
- 1e1a 8mo agoThe sample rate is only ~800hz (probably very difficult/impossible to increase)
- pbhjpbhj 8mo agoThe fundamental frequencies of voice are below half that, I think that means you can use it to determine what is said writing it's sensitivity range.