StereoDelayTestSynth(){
ControlMetro metro = ControlMetro().bpm(100);
ControlGenerator freq = ControlRandom().trigger(metro).min(0).max(1);
Generator tone = RectWave().freq(
freq * addParameter("frequencyRandomAmount") + 100
+ addParameter("freq")
) * SineWave().freq(50);
ADSR env = ADSR()
.attack(0.01)
.decay( addParameter("decay") )
.sustain(0)
.release(0)
.doesSustain(false)
.trigger(metro);
StereoDelay delay = StereoDelay(3.0f,3.0f)
.delayTimeLeft( 0.5 + SineWave().freq(0.2) * 0.01)
.delayTimeRight(0.55 + SineWave().freq(0.23) * 0.01)
.feedback(0.3)
.dryLevel(0.8)
.wetLevel(0.2);
Generator filterFreq = (SineWave().freq(0.01) + 1) * 200 + 225;
LPF24 filter = LPF24().Q(2).cutoff( filterFreq );
Generator outputGen = filter.input(delay.input( tone * env )) * 0.3;
setOutputGen(outputGen);
}
//--------------------------------------------------------------
void ofApp::setup(){
sliderArea = ofRectangle(0, 0, ofGetWindowWidth() / 2, ofGetWindowHeight());
///////////////////////////////
// Audio Stuff
///////////////////////////////
const int NUM_STEPS = 8;
// synth paramters are like instance variables -- they're values you can set later, by
// cally synth.setParameter()
ControlGenerator bpm = synth.addParameter("tempo",100).min(50).max(300);
ControlGenerator transpose = synth.addParameter("transpose", 0).min(-6).max(6);
// ControlMetro generates a "trigger" message at a given bpm. We multiply it by four because we
// want four 16th notes for every beat
ControlGenerator metro = ControlMetro().bpm(4 * bpm);
// ControlStepper increments a value every time it's triggered, and then starts at the beginning again
// Here, we're using it to move forward in the sequence
ControlGenerator step = ControlStepper().end(NUM_STEPS).trigger(metro);
// ControlSwitcher holds a list of ControlGenerators, and routes whichever one the inputIndex is pointing
// to to its output.
ControlSwitcher pitches = ControlSwitcher().inputIndex(step);
ControlSwitcher cutoffs = ControlSwitcher().inputIndex(step);
ControlSwitcher glides = ControlSwitcher().inputIndex(step);
// stick a bunch of random values into the pitch and cutoff lists
for(int i = 0; i < NUM_STEPS; i++){
ControlGenerator pitchForThisStep = synth.addParameter("step" + to_string(i) + "Pitch", randomFloat(10, 80)).min(10).max(80);
pitches.addInput(pitchForThisStep);
ControlGenerator cutoff = synth.addParameter("step" + to_string(i) + "Cutoff", 500).min(30).max(1500);
cutoffs.addInput(cutoff);
ControlGenerator glide = synth.addParameter("step" + to_string(i) + "Glide", 0).min(0).max(0.1);
glides.addInput(glide);
}
// Define a scale according to steps in a 12-note octave. This is a pentatonic scale. Like using
// just the black keys on a piano
vector<float> scale;
scale.push_back(0);
scale.push_back(2);
scale.push_back(3);
scale.push_back(5);
scale.push_back(7);
scale.push_back(10);
// ControlSnapToScale snaps a float value to the nearest scale value, no matter what octave its in
ControlGenerator midiNote = transpose + ControlSnapToScale().setScale(scale).input(pitches);
ControlGenerator frequencyInHertz = ControlMidiToFreq().input(midiNote);
// now that we've done all that, we have a frequency signal that's changing 4x per beat
Generator tone = RectWave().freq( frequencyInHertz.smoothed().length(glides) );
// create an amplitude signal with an ADSR envelope, and scale it down a little so it's not scary loud
Generator amplitude = ADSR(0.01, 0.1, 0,0).trigger(metro) * 0.3;
// create a filter, and feed the cutoff sequence in to it
LPF24 filter = LPF24().cutoff(cutoffs).Q(0.1);
filter.input(tone * amplitude);
// rout the output of the filter to the synth's main output
synth.setOutputGen( filter );
// build a slider for each parameter
vector<ControlParameter> synthParameters = synth.getParameters();
for(int i = 0; i < synthParameters.size(); i++){
sliders.push_back(ParameterSlider(synthParameters.at(i)));
}
auto _devices = soundStream.getDeviceList();
ofSoundStreamSettings _settings;
if (!_devices.empty()) {
_settings.setOutDevice(_devices[1]);
}
_settings.setOutListener(this);
_settings.bufferSize = 512;
_settings.sampleRate = 44100;
_settings.numInputChannels = 0;
_settings.numOutputChannels = 2;
soundStream.setup(_settings);
}
