I’m looking at adding 2 microphones to a bone conduction headset, like this one:
For the microphones, one on each side, I’m thinking about using a basic element like these:
What I don’t know how to handle would be the vibration separation between the speak & microphone.
As a joke, I did suggest a pair of miniature microphones, which look like a normal handheld mic, as earrings.
Yes, you’re right…if you’re not careful, the microphones and bone-conduction transducers could form a feedback loop and cause a super-loud howling/whistling sound. As long as you don’t mount the microphones directly to the transducer, bone-conduction transducers are usually more resistant to feedback than speakers are.
But, it sounds like you want to mount the mics right on the transducers (because it is a convenient location). If this is really what you want to do, avoiding feedback will be difficult.
Chip
Actually, I’m thinking about using really small enclosures for the mics & amps attached to the headband behind the ear, or relocate the speker behind the ear, with the mic in front of the ear.