SB AWE32 Developer's Information Pack
PART IV MIDI NRPN Implementation
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92
Copyright
Creative Technology Ltd., 1994-1996
Version 3.00
NRPN LSB 21 (Initial Filter Cutoff)
Realtime
: Yes
Range
: [0, 127]
Unit
: 62Hz
Filter cutoff from 100Hz to 8000Hz.
NRPN LSB 22 (Initial Filter Resonance Coefficient)
Realtime
: No
Range
: [0, 127]
The EMU8000 had a built in resonance coefficient table comprising of 16 entries. Values 0-7 will select
the first (0) entry, values 8-15 selects the second (1) entry and so on.
Coeff
Low
Low
High
High
DC
Fc(Hz)
Q(dB)
Fc(kHz)
Q(dB)
Attn(dB)
0
92
5
Flat
Flat
-0.0
1
93
6
8.5
0.5
-0.5
2
94
8
8.3
1
-1.2
3
95
10
8.2
2
-1.8
4
96
11
8.1
3
-2.5
5
97
13
8.0
4
-3.3
6
98
14
7.9
5
-4.1
7
99
16
7.8
6
-5.5
8
100
17
7.7
7
-6.0
9
100
19
7.5
9
-6.6
10
100
20
7.4
10
-7.2
11
100
22
7.3
11
-7.9
12
100
23
7.2
13
-8.5
13
100
25
7.1
15
-9.3
14
100
26
7.1
16
-10.1
15
100
28
7.0
18
-11.0
NRPN LSB 23 (LFO1 to Filter Cutoff)
Realtime
: Yes
Range
: [-64, 63]
Unit
: 56.25 cents
Positive data value causes a positive phase (from 0 to maximum) filter modulation via LFO1 with
magnitude of 3 octave at LFO peak. On the other hand, negative data value causes a negative phase (from
0 to minimum) filter modulation via LFO1 with magnitude of 3 octave at LFO peak.