GiaThnYgeia wrote: > I don't see how the previous got linked to a previous thread so I am > reposting with additional clarification. > > OK, I did some testing on an other machine with a testing installation, > downloaded FMIT (an instrument tuner that will pickup audio input/analog > and tell you all kinds of stuff about the wave that is fed). > Same exact behavior, hardware only lists two audio inputs and are both > unplugged. The lower the db threshold for sound recording the more > apparent the sound becomes. Each knock on the box shows corresponding > amplification of that noise. > > Ok, so I picked up 2-3 live debian based USB sticks I have. I plugged > then in to 3 different machines, downloaded FMIT and run it. Similar > results. So it has nothing to do with my configuration of stuff. I say > if some software is picking up sound from your environment and records > it when no inputs are plugged in I would call this a "security" issue > not a malfunction. > > What is there MORE to post so it can be reproduced? Blank live debian > installations adding FMIT in 3 machines Jessie + Stretch (one on UPS, > one on mains-plug, on laptop) if you allow it to see a wide spectrum of > frequencies it records noise (mostly hi-freq) and only hardware inputs > are unplugged. Where is the noise coming from? > > It probably has nothing to do with the program itself but its > dependencies and some code feeding in wrong data as audio input. But it > is actual sound
I was interested in your mainboard - perhaps it has integrated mic. Do you have pavucontrol installed? Go to input devices and mute the mic regards