Audio fading out (noise reduction?)

Not sure if Innov would go for this but I'd be willing to sign an NDA and work on the firmware.

At the K2, I did a lot of reverse engineering to find where several settings are stored within the firmware. As I am not a software engineer, I used GHidra to decompile the firmware. Then I went through the procedures until I found the initialisation routines.

The firmware isn't developed by Innovv, but by the manufacturer of the DSP. Means Novatek. And they don't give out anything to work on the firmware. Rock already asked them some years ago. So major changes are not possible.

The only good news is, that the firmware of the K2, where I've found the data fields for various settings, it very similar to the K3 firmware. I verified this by changing the brightness at the K3 firmware.

So anything I wrote about how to modifiy the K2 firmware also applies to the K3 firmware.

Thanks for the info! I'd be hoping to be able to actually write an algorithm for the gain control, and another for the accelerometer issues. I'm not sure how to solve "not sensitive enough" - unless it is simply set up wrong and I can fix that, but if the sensor is just not sensitive enough at a hardware level I can't do anything there. But for my accel problem, which is that it is _too_ sensitive, when the accelerometer registers a motion event, the GPS speed can be checked over the next 5 seconds or so. If it stays consistent (bike isn't slowing down), then either no accident happened, or there was a collision but the rider is still riding, so they can hit the record button to manually save if needed. In either case, a false positive is avoided. Thats if I can reverse engineer it enough, like you said. Thanks again!

But for my accel problem, which is that it is _too_ sensitive, when the accelerometer registers a motion event, the GPS speed can be checked over the next 5 seconds or so. ....

That would be a smart idea to double check if there was an accident or not. Would prevent the false positives we always get with the G-Sensor only.

I myself disabled the G-Sensor at all, as I think it is not necessary. The 128GB card I use offers around 7 hours of recording before the oldest video gets overwritten.

If there was an accident, two options are possible:

1) I am still able to stop recording or save the video myself. In that case the crash video is save.

2) I am unable to do anything. In this case, the fire brigade will disconnect the battery to prevent a fire. That is the normal procedure of the fire brigade in traffic accidents. At least in Germany. So in any way, the camera will not run long enough to overwrite the crash video.

More important is to use the TS format, as this does not get corrupted in case the power is cut off, like MP4.