Hey there-
I received some files that were recorded in 48k/24bit. When I bring the vocal file into a multitrack session that is 44.1k/16bit I get this subtle ringing at high frequencies. When I bring the same file into a session where the multitrack is 48k/24bit, the ringing is not present. I've tried converting by mixing down the raw file from the 48k/24bit session to a 44.1k/16bit file but I still ended up with the ringing.
Any ideas what's going on and how I can remedy this issue?

Here are links to files (15 seconds each) for comparison if you want to have a listen:
http://withoutreservation.com/share/test-48k.wav
http://withoutreservation.com/share/test-441k.wav

Thanks!
Kent