Not sure. I'll try tapping on it and will see...Does it happen when you are not moving?
Does "can hear taps but nothing else" mean that you don't hear the noise on any of your tests 1, 2, 3 & 4 ?, or maybe only on 3 and 4?Ok, here are some things I tried:
1. Remove and change power adapter and cable - no effect.
2. Tapping on camera while recording at stop - no effect (can hear taps but nothing else)
3. Night/Day - no difference.
4. Different mount - no difference.
After I listened closer, it almost sounds like some kind of interference (maybe my phone LTE?)
Also, I can drive the same stretch of road and get/not get the noise.
Does "can hear taps but nothing else" mean that you don't hear the noise on any of your tests 1, 2, 3 & 4 ?, or maybe only on 3 and 4?
I suspect the spring in the memory card holder may be able to rattle, maybe try a different card...
Are you using it with wi-fi on or off? On mine I can hear more electronic noise from the voltage regulators when Wi-Fi is on, however the microphone doesn't pick that up, I need to use my ears to hear it.
Sorry, I meant to say that the noise is there even after tests 1 -4. None of the items mentioned stopped the noise.Could not reproduce the the noise by any of 1 - 4. I will try today with my phone OFF.
So you are now saying that even when the car is not moving and the engine is switched off so that there is nothing to cause vibrations, you can still hear the noise?Sorry, I meant to say that the noise is there even after tests 1 -4. None of the items mentioned stopped the noise.
I'll reiterate, it's the mic...