If anyone can post an audio sample (with a link here) of an IBOC-AM using an
average AM radio please do so.

Band-scans up and down across 930 WPAT's IBOC signal (notice how it
nearly obliterates 920 WPHY and hisses in the background of 910 WRKL
and 950 WPEN):

ftp://ftp.amstereoradio.com/uploads/wpatiboc.mp3
ftp://ftp.amstereoradio.com/uploads/wpatscn2.mp3

Switching back and forth between 1530 WSAI and 1520 WWKB, when WSAI
was testing IBOC at night and WWKB happened to be broadcasting "dead
air", making the "hash" from WSAI even more noticeable (skywave
reception from New Jersey):

ftp://ftp.amstereoradio.com/iboc/wsaiiboc.mp3