Creative AWE32 - NRPN LSB 21 (Initial Filter Cutoff); NRPN LSB 22 (Initial Filter Resonance Coefficient); NRPN LSB 23 (LFO1 to Filter Cutoff)

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SB AWE32 Developer's Information Pack PART IV MIDI NRPN Implementation •• 92

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.