I noticed that that running alsamixer on a 50-line xterm, red appears on
my volume controls between 79 and 81. On a 24-line xterm, it appears
between 71 and 73. This seems slightly odd, though I don't know if
there's any way to tell what PC soundcard mixers happen to put out. :)
The card from lspci:
0000:00:09.0 Multimedia audio controller: Ensoniq ES1371 [AudioPCI-97] (rev 08)
Subsystem: Ensoniq Creative Sound Blaster AudioPCI64V, AudioPCI128
Flags: bus master, slow devsel, latency 64, IRQ 3
I/O ports at b000 [size=64]
Capabilities: <available only to root>