Does anyone know what are two thin horizontal lines in waveform window in audio editors? I want to make my sound louder but wo/clipping, look say here https://www.redsharknews.com/media/k2/items/src/48ed12281ae1f6453d2d5ec95b17e082.jpg, lines at approx. peaks, is this to mark headroom or something else? What if sound crosses it, does it mean clipping will occur? I can see in DAW when sound gets clipped but I'm not sure here.
If you were talking about blue lines, then:
I don't know how to describe that with terminology, but when you play quieter the waveforms is thinner and lies near that line. I believe that line is that defines an audio region minimal dynamic range (again, I'm bad at terminology, but I mean the dynamic range, like my audio interface has a -120 dB dynamic range), so your DAW also has that dynamic range and that line represents -∞ dB, so all audio content which volume level is above the minimal dynamic range is shown as waveform. If that line is mixed with audio content like this (below) then it's called a zero crossing:
So if you see only that line with no audio content – it represent silence (still some extremely quiet noises can occur). I believe you're editing a stereo file, so each channel has it's own (because I've shown in mono).