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YMF744B
February 3, 1999
-39-
(1) Volume for MIDI
MIDI Vol. (26h)
01234567
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
Master 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)
01234567
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
Master 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.