YAMAHA | X G R E A D I N G P A G E

Step 2 Using NRPN to edit

1. Drum low pass filter cutoff frequency
CC#99=20 CC#98=rr (note number of the drum instrument that you wish to edit. The same goes for each message described below) CC#6: 0~64~127

This sets the cutoff frequency of the low pass filter; i.e., frequencies above this point will not be allowed through. When this is lowered, the overtones of the sound will be attenuated, producing a milder sound. (figure 1)

Figure 1

2. Drum low pass filter resonance
CC#99=21 CC#98=rr CC#6: 0~64~127

This is used to boost or attenuate the overtones in the vicinity of the cutoff frequency, thus giving a distinct character to the sound. Raising this can produce a more shrill sound or a "meowing" sound. (figure 2)

Figure 2

3. Drum EG attack rate
CC#99=22 CC#98=rr CC#6: 0~64~127

This adjusts the speed at which the sound will attack. Relative to the initial value of 64, decreasing this parameter will slow down the attack, and increasing it will speed up the attack. However, the attack will not speed up any faster than the original waveform. Also, be aware than in the case of normal voices (i.e., non-drum voices), decreasing the setting will speed up the attack, and increasing it will speed up the attack. (figure 3)

Figure 3

4. Drum EG decay rate
CC#99=23 CC#98=rr CC#6: 0~64~127

This specifies the rate at which the sound will decay after the maximum volume is reached. Decreasing this below 64 will lengthen the decay, and increasing it will shorten the decay. On the MU series etc. there are parameters called EG DECAY 1 and EG DECAY 2, but when NRPN is used, both will change by the same value. If you wish to adjust these independently, you will need to use system exclusive messages. (figure 4)

Figure 4

5. Drum instrument pitch coarse
CC#99=24 CC#98=rr CC#6: 0~64~127

This lets you adjust the pitch in semitone steps. If this value is changed drastically, some sounds may not retain their original character, but you can also take advantage of this to create new sounds.

6. Drum instrument pitch fine
CC#99=25 CC#98=rr CC#6: 0~64~127

This adjusts the pitch in steps of one cent (1/100th of a semitone). (figure 5)

Figure 5

7. Drum instrument level
CC#99=26 CC#98=rr CC#6: 0 (minimum) ~127 (maximum)

This sets the volume for each drum instrument. The default value will differ depending on the instrument. (figure 6)

Figure 6

8. Drum instrument panpot
CC#99=28 CC#98=rr CC#6: 0 (random pan) ~1 (far left) ~64 (center) ~127 (far right)

This sets the panpot for each drum instrument. The default value will differ depending on the instrument. When CC#6=0, random panning will occur, and the stereo location will change for each note. (figure 7)

Figure 7

9. Drum instrument reverb send level
CC#99=29 CC#98=rr CC#6: 0 (minimum)~127 (maximum)

This sets the amount that is sent from each instrument to reverb. Here too, the default value will differ depending on the instrument; kick drum etc. will have less reverb, and snare etc. will have more. Since the overall reverb send amount of the entire drum part is determined by CC#91, the maximum value of this parameter will be within that range.

10. Drum instrument chorus send level
CC#99=30 CC#98=rr CC#6: 0 (minimum)~127 (maximum)

This sets the amount that is sent from each instrument to the chorus effect. Again, the default value will differ depending on the instrument. Since the overall chorus send amount of the entire drum part is determined by CC#91, the maximum value of this parameter will be within that range. (figure 8)

Figure 8

11. Drum instrument variation send level
CC#99=31 CC#98=rr CC#6 (refer to the explanation)

This sets the amount that is sent from each instrument to the variation effect. However, this parameter will function differently depending on whether the connection of the variation effect is set to "System" or to "Insertion."
If the variation effect is being used as a system effect such as reverb or chorus, the send amount will be minimum for a value of CC#6=0 and maximum for 127, just as for the send setting for reverb etc. Also, the default value is generally the maximum of 127.
However if the variation effect is being used by the drum part as an insertion effect, this method does not apply. In this case, a setting of CC#6=0 will mean that this instrument will not be sent to the variation effect, thus turning it "OFF." For settings of CC#6=1~127, the effect will be "ON" regardless of whether the actual value is low or high, and the sound will be sent through the variation effect. In other words, this parameter will function as an ON/OFF switch. (figure 9)

Figure 9

12. Drum high pass filter cutoff frequency
CC#99=36 CC#98=rr CC#6: 0~64~127

This sets the cutoff frequency of the high pass filter (a filter which cuts the sound lower than a specified frequency). By lowering this value appropriately, you can sharply cut any unwanted low range of the original waveform. (figure 10)

Figure 10

13. Drum EQ Bass
CC#99=48 CC#98=rr CC#6: 0~64~127

This is an equalizer for each instrument, and specifies the boost or cut for the low range. This can be increased or decreased relative to the default value of 64, but unlike other EQ parameters (such as those for the Variation effects), the value of this parameter does not equal the dB value. Consider the value merely a guideline for relative adjustment.

14. Drum EQ treble
CC#99=49 CC#98=rr CC#6：0～64～127

This is an equalizer for each instrument, and specifies the boost or cut for the high range. This can be increased or decreased relative to the default value of 64, but unlike other EQ parameters (such as those for the Variation effects), the value of this parameter does not equal the dB value. Consider the value merely a guideline for relative adjustment. (figure 11)

Figure 11

15. Drum EQ bass frequency
CC#99=52 CC#98=rr CC#6: 4~40 (32Hz~2.0kHz）

This specifies the center frequency for the low range EQ. The effect of the EQ will be centered on the frequency you specify here. Notice that the range of the CC#6 value is different from that of other parameters. For the actual frequencies, refer to the "XG EFFECT PARAMETER TABLE" section in the specification.

16. Drum EQ treble frequency
CC#99=53 CC#98=rr CC#6: 28~58 (500Hz~16.0kHz)

This specifies the center frequency for the high range EQ. The effect of the EQ will be centered on the frequency you specify here. Notice that the range of the CC#6 value is different from that of other parameters. For the actual frequencies, refer to the "XG EFFECT PARAMETER TABLE" section in the specification. (figure 12)

Figure 12