ZeroGravity Audio (2017)
6
MIDI Control
Besides MIDI clock data to sync the LFO, the unit also responds to program change data (PC) to
select the filter mode, and controller change data (CC) to control various filter parameters.
At power up, the default receiving channel is #1. See below to change the channel.
IMPORTANT:
To have full range MIDI control of saturation, cutoff, resonance and mix, these 4 controls have to
be turned fully counter clockwise.
Program Change:
00
No filtering
01
Low Pass (2P)
02
Band Pass (2P)
03
Hi Pass (2P)
04
Low Pass (4P)
05
Band Pass (4P)
06
Hi Pass (4P)
07 .. 127
No Filtering
Controller:
01
Cutoff
03
Resonance
08
Mix
09
Saturation
12
LFO Rate
13
LFO Multiplier
14
LFO Waveform
15
LFO Level
64
TAP
65
Sync ON/OFF
RESET
When the switch corresponding to the current filter mode is pressed 2 times rapidly, the MIDI
control values for saturation, cutoff, resonance and mix are reset.
This can be useful when for example the MIDI connection is terminated (or lost), and the last data
sent to the filter was not zero. Or there was some erroneous CC data on the filter channel.
This would cause the filter to stay at these values indefinitely and limit the range of the analog
controls.
MIDI CHANNEL
To change the receive channel, hold down the SYNC switch for a couple of seconds until it starts to
flash rapidly.
The filter is now in 'listen mode' – any MIDI data received next (PC or CC) will dictate the new
channel number. The sync switch will stop flashing.
To cancel listen mode, just press the sync switch again.
