I grabbed a friends recording to patch with mine where I had an SD card failure. The waves from his recording have some weird features which I've never seen on any recording I've done.
I've attached a screen shot. Anyone? Don't sound distorted but there is some low end funkyness. I used some multi-band compress to cut subsonics and the wave form started to look more normal but is still missing dynamic range in the negative for both channels.
see attached jpg