I thought I'd read studies on this, but it turns out it was on sample frequency rather then bit depth.
However, seeing as in audio bit depth only affects dynamic range, you'd have to be listening to something with an extreme dynamic range to hear it. I can see why higher bit depth is useful in recording, but not in playback.
However, seeing as in audio bit depth only affects dynamic range, you'd have to be listening to something with an extreme dynamic range to hear it. I can see why higher bit depth is useful in recording, but not in playback.