MyApp(){
lpf.type(LOW_PASS); // Set filter to low-pass response
lpf.res(4); // Set resonance amount to emphasize filter
env.attack(0.01); // Set short (10 ms) attack
env.decay(0.4); // Set longer (400 ms) decay
tmr.freq(120./60.*4.); // Set timer frequency to 120 BPM
tmr.phaseMax(); // Ensures timer triggers on first sample
modCutoff.period(30); // Set period of cutoff modulation
modCutoff.phase(0.5); // Start half-way through cycle
freq.lag(0.1); // Lag time of portamento effect
step=0;
}
void onAudio(AudioIOData& io){
tmr.period(0.25);
// Set time taken to reach new frequency value
freq.lag(0.1);
while(io()){
if(tmr()){
// Set new target frequency of one-pole
freq = pow(2, rnd::uniS(1.))*440;
}
// Use smoothed output of one-pole for oscillator frequency
src.freq(freq());
float s = src();
io.out(0) = io.out(1) = s * 0.2f;
}
}
