YMF744B
February 3, 1999
-39-
(1) Volume for MIDI
MIDI Vol. (26h)
0
1
2
3
4
5
6
7
mute
mute
mute
mute
mute
mute
mute
mute
0
0000h
0000h
0000h
0000h
0000h
0000h
0000h
0000h
mute
-52dB
-42dB
-36dB
-32dB
-30dB
-28dB
-26dB
1
0000h
0029h
0082h
0103h
019Bh
0206h
028Ch
0335h
mute
-42dB
-32dB
-26dB
-22dB
-20dB
-18dB
-16dB
2
0000h
0082h
019Bh
0335h
0515h
0666h
080Eh
0A24h
mute
-36dB
-26dB
-20dB
-16dB
-14dB
-12dB
-10dB
3
0000h
0103h
0335h
0666h
0A24h
0CC5h
1013h
143Dh
mute
-32dB
-22dB
-16dB
-12dB
-10dB
-8dB
-6dB
4
0000h
019Bh
0515h
0A24h
1013h
143Dh
197Ah
2013h
mute
-30dB
-20dB
-14dB
-10dB
-8dB
-6dB
-4dB
5
0000h
0206h
0666h
0CC5h
143Dh
197Ah
2013h
2861h
mute
-28dB
-18dB
-12dB
-8dB
-6dB
-4dB
-2dB
6
0000h
028Ch
080Eh
1013h
197Ah
2013h
2861h
32D6h
mute
-26dB
-16dB
-10dB
-6dB
-4dB
-2dB
0dB
M
a
ster Vol. (22h)
7
0000h
0335h
0A24h
143Dh
2013h
2861h
32D6h
3FFFh
The default is Master = 4, MIDI = 4 (-12dB).
(2) Volume for Voice
Voice Vol. (04h)
0
1
2
3
4
5
6
7
mute
mute
mute
mute
mute
mute
mute
mute
0
0000h
0000h
0000h
0000h
0000h
0000h
0000h
0000h
mute
-56dB
-46dB
-40dB
-36dB
-34dB
-32dB
-30dB
1
0000h
0019h
0052h
00A3h
0103h
0146h
019Bh
0206h
mute
-46dB
-36dB
-30dB
-26dB
-24dB
-22dB
-20dB
2
0000h
0052h
0103h
0206h
0335h
0409h
0515h
0666Eh
mute
-40dB
-30dB
-24dB
-20dB
-18dB
-16dB
-14dB
3
0000h
00A3h
0206h
0409h
0666h
080Eh
0A24h
0CC5h
mute
-36dB
-26dB
-20dB
-16dB
-14dB
-12dB
-10dB
4
0000h
0103h
0335h
0666h
0A24h
0CC5h
1013h
143Dh
mute
-34dB
-24dB
-18dB
-14dB
-12dB
-10dB
-8dB
5
0000h
0146h
0409h
080Eh
0CC5h
1013h
143Dh
197Ah
mute
-32dB
-22dB
-16dB
-12dB
-10dB
-8dB
-6dB
6
0000h
019Bh
0515h
0A24h
1013h
143Dh
197Ah
2013h
mute
-30dB
-20dB
-14dB
-10dB
-8dB
-6dB
-4dB
M
a
ster Vol. (22h)
7
0000h
0206h
0666h
0CC5h
143Dh
187Ah
2013h
2861h
The default is Master = 4, Voice = 4 (-16dB).
(2) SB Mixer
®
AC’97
The volume of CD, Line and MIC are applied to this case. AC’97 volume are not updated automatically
when these values are changed. Thus, the SB Mixer values need to be written to the AC’97 register with
the software.