Hello everyone
As part of my live setup I’ve made a couple of functions that I use to control my hardware synths. I figured they could serve as an example and starting point for others to work from.
# An important part of this code is the midi ports that
# you set for each synth. This depends entirely on your
# midi setup. I use a 4-port midi interface, and I make
# sure to connect my synths the same way every time.
# The Volca Drum has six different "sound slots" it can play
# The sound isn't determined by the note, but which channel the
# note is sent to.
define :volca do |sound|
channel = 0
case sound
when 1 then channel = 1
when 2 then channel = 2
when 3 then channel = 3
when 4 then channel = 4
when 5 then channel = 5
when 6 then channel = 6
end
midi :c1, channel: channel, port: "midiout3_(midi4x4)_3"
end
# the Roland SE-02 is a monosynth, which makes it super easy to work with
# this function is purely to make my code easier to understand by the audience.
define :se02 do |note, sustain|
midi note, port: "midiout2_(midi4x4)_2", sustain: sustain
end
# the Roland System-1M is a polysynth with up to four voices, which means
# it needs a way to handle multiple notes at a time.
define :system1m do |note, sustain|
case note
when Symbol
midi note, port: "midi4x4_1", sustain: sustain
when Numeric
midi note, port: "midi4x4_1", sustain: sustain
else
note.each do |n|
midi n, port: "midi4x4_1", sustain: sustain
end
end
end
# This fuction is used to send control signals to the synth
# which controls the different parameters, such as cutoff.
# It's not particularly clean, but it gets the job done.
# The parameters and numbers depend on the midi implementation
# of that particular synth, so give the manual a look.
define :ctrl do |synth, param, value|
se02_parameters = {
"glide" => 5,
"xmod_filter" => 16,
"xmod_osc" => 17,
"xmod_pulse" => 18,
"noise_mix" => 41,
"osc1_mix" => 48,
"osc2_mix" => 49,
"osc3_mix" => 50,
"feedback" => 51,
"lfo_rate" => 102,
"lfo_osc" => 103,
"lfo_filter" => 105,
"delay_time" => 82,
"delay_amount" => 91,
"delay_regen" => 83,
"cutoff" => 74
}
system1m_parameters = {
"mod_wheel" => 1,
"cutoff" => 3,
"glide" => 5,
"resonance" => 9,
"bitcruster_amount" => 12,
"delay_time" => 13,
"osc1_mix" => 16,
"osc2_mix" => 17,
"sub_mix" => 18,
"noise_mix" => 19,
"pitch_envelope" => 22,
"pitch_attack" => 23,
"pitch_decay" => 24,
"lfo_pitch" => 26,
"lfo_fade_time" => 27,
"lfo_filter" => 28,
"lfo_rate" => 29,
"osc1_color" => 50,
"osc1_xmod" => 52,
"osc2_color" => 55,
"osc2_tune" => 56,
"hpf_cutoff" => 79,
"reverb_amount" => 91,
"delay_amount" => 94
}
case synth
when "se02" then
if se02_parameters.has_key?(param)
midi_cc se02_parameters[param], val_f: value, port: "midiout2_(midi4x4)_2"
else
print "no such parameter"
end
when "system1m" then
if system1m_parameters.has_key?(param)
midi_cc system1m_parameters[param], val_f: value, port: "midi4x4_1"
else
print "no such parameter"
end
else
print "no such synth"
end
end
# A handy little panic button
midi_all_notes_off
