void MainWindow::buttonSixPressed() {
m_currentNote = 5;
Note * note = m_sequencerController->getSequencer()->getNotes().at( 5 );
Oscillator * oscillator = note->getOscillator();
float frequency = oscillator->getFrequency();
float amplitude = note->getAmplitude();
blockSignals( true );
if( note->getWavetype() == FM ) {
FmOscillator * fm = static_cast<FmOscillator *>( oscillator );
ui->harmonicitySpinner->setEnabled( true );
ui->modIndexSpinner->setEnabled( true );
ui->harmonicitySpinner->setValue( fm->getHarmonicity() );
ui->modIndexSpinner->setValue( fm->getModulationIndex() );
} else {
ui->harmonicitySpinner->setEnabled( false );
ui->modIndexSpinner->setEnabled( false );
}
ui->frequencySpinner->setValue( frequency );
ui->amplitudeSlider->setValue( amplitude * 100.0f );
ui->bpmBox->setValue( m_sequencerController->getBpm() );
setComboBox( note->getWavetype() );
blockSignals( false );
}
int main() {
printf("Noisebox!\n");
osc.setOscType(kOSC_TYPE_SAW , SAMPLERATE);
osc.frequency = 440;
lfo.setOscType(kOSC_TYPE_SAW, SAMPLERATE);
lfo.frequency = 0.1;
if(startMidi()!=0) {
return 1;
}
if(startAudio()!=0) {
return 1;
}
cout << "\nPlaying ... press any to quit.\n";
while ( cin.peek() == EOF ) {
usleep(100*1000);
}
printf("Bye!\n");
}
// ---------------------------------------------------------------------------
// accum_samples
// ---------------------------------------------------------------------------
// helper
//
static void accum_samples( CSOUND * csound,
Oscillator & oscil, Breakpoint & bp,
double * bufbegin )
{
if( bp.amplitude() > 0 || oscil.amplitude() > 0 )
{
double radfreq = radianFreq( csound, bp.frequency() );
double amp = bp.amplitude();
double bw = bp.bandwidth();
// initialize the oscillator if it is changing from zero
// to non-zero amplitude in this control block:
if ( oscil.amplitude() == 0. )
{
// don't initialize with bogus values, Oscillator
// only guards against out-of-range target values
// in generateSamples(), parameter mutators are
// dangerous:
if ( radfreq > PI ) // don't alias
amp = 0.;
if ( bw > 1. ) // clamp bandwidth
bw = 1.;
else if ( bw < 0. )
bw = 0.;
#ifdef DEBUG_LORISGENS
/*
std::cerr << "initializing oscillator " << std::endl;
std::cerr << "parameters: " << bp.frequency() << " ";
std::cerr << amp << " " << bw << std::endl;
*/
#endif
// initialize frequency, amplitude, and bandwidth to
// their target values:
/*
oscil.setRadianFreq( radfreq );
oscil.setAmplitude( amp );
oscil.setBandwidth( bw );
*/
oscil.resetEnvelopes( bp, (double) csound->esr );
// roll back the phase:
oscil.resetPhase( bp.phase() - ( radfreq * (double) csound->ksmps ) );
}
// accumulate samples into buffer:
// oscil.generateSamples( bufbegin, bufbegin + nsamps, radfreq, amp, bw );
oscil.oscillate( bufbegin, bufbegin + csound->ksmps,
bp, (double) csound->esr );
}
}
//////////////////////////////////////////
// the magic
int audioCallback( void *outputBuffer, void *inputBuffer, unsigned int length,
double streamTime, RtAudioStreamStatus status, void *userData )
{
float *buffer = (float *) outputBuffer;
if ( status )
std::cout << "Stream underflow detected!" << std::endl;
float out = 0;
for(int i = 0; i < length; i++) {
float of = oscFreq.get();
lfo.frequency = lfoFreq.get();
if(modType==MOD_PITCH) {
osc.frequency = of - modAmount.get()*map(lfo.getSample(), -1, 1, 0, of);
} else {
osc.frequency = of;
}
float filtFreq = filterFreq.get();
if(modType==MOD_CUTOFF) {
filtFreq = filtFreq - modAmount.get()*map(lfo.getSample(), -1, 1, 40, filtFreq);
}
float s = osc.getSample();
out = filter.lores(s, filtFreq, filterRes.get());
out = distort(out*distVolume);
if(out!=out) { // NaN prevention
out = s;
}
out *= 0.7f;
if(mute) out = 0;
buffer[i*2] = out;
buffer[i*2+1] = out;
}
return 0;
}
//This function shows a part of how the modules work internally, based on a sample-by-sample model.
void modularSynthInternals(void) {
//Here we create an Oscillator
Oscillator osc;
osc.frequency = 1; //We'll set the frequency to 1 Hz
osc.setGeneratorFunction(Oscillator::sine); //Set the waveform to a sine wave.
//We are going to manually tell the oscillator that the sample rate is 40 samples per second
ModuleControlData_t controlData;
controlData.sampleRate = 40;
osc.setData(controlData);
//If the frequency is 1 Hz (1 cycle per second) and there are 40 samples per second, if we take 40 samples,
//we should expect to see a whole sine wave (0 to 1 to 0 to -1 and back to 0). So, we call getNextSample()
//40 times to advance 40 samples through the process of generating the waveform and print the result.
for (int i = 0; i < 40; i++) {
cout << osc.getNextSample() << endl;
}
}
//////////////////////////////////////////
// The main midi callback
void midiCallback( double deltatime, std::vector< unsigned char > *message, void *userData )
{
unsigned int nBytes = message->size();
for ( unsigned int i=0; i<nBytes; i++ )
std::cout << "Byte " << i << " = " << (int)message->at(i) << ", ";
if ( nBytes > 0 )
std::cout << "stamp = " << deltatime << std::endl;
if(message->at(0)==144) {
// note on
mute = false;
int oscType = message->at(1) - 36;
oscType %= 4;
osc.setOscType(oscType, SAMPLERATE);
} else if(message->at(0)==128) {
// note off
if(message->at(1)<=39) {
mute = true;
}
} else if(message->at(0)==176) {
int val = message->at(2);
switch(message->at(1)) {
case 1:
oscFreq.set(logMap(val, 0, 127, 20, 8000));
break;
case 2:
lfoFreq.set(logMap(val, 0, 127, 0.01, 100));
break;
case 3:
modAmount.set(map(val, 0, 127, 0, 1));
break;
case 4:
if(val>63) {
modType = MOD_PITCH;
} else {
modType = MOD_CUTOFF;
}
break;
case 5:
filterFreq.set(map(val, 0, 127, 50, 4000));
break;
case 6:
filterRes.set(map(val, 0, 127, 1, 10));
break;
case 7:
distVolume = logMap(val, 0, 127, 0, 10);
break;
case 8:
distGain = logMap(val, 0, 127, 0, 10);
break;
}
}
}
void processAudio(AudioBuffer &buffer) {
FloatArray left = buffer.getSamples(LEFT_CHANNEL);
FloatArray right = buffer.getSamples(RIGHT_CHANNEL);
for(int i = 0; i<buffer.getSize(); i++){
if(abs(last-target) < 0.001){
last = target;
target = noise->getNextSample()*range;
}
left[i] = last;
last += getIncrement();
right[i] = hz.voltsToSample(quantize(hz.sampleToVolts(right[i])));
}
}
int main( int argc, char ** argv ) {
if( argc <= 2 ) {
std::cout << "please provide valid command line arguments. Syntax is '/wav_writer <filename.wav> <oscillatortype>'" << std::endl;
return -1;
}
std::string filename;
filename = "res/";
filename += argv[1];
Oscillator * oscillator;
Oscillator * oscillatorTwo = 0;
if( strcmp( argv[2], "triangle" ) == 0 ) {
oscillator = new TriangleOscillator();
} else if( strcmp( argv[2], "rsaw" ) == 0 ) {
oscillator = new RisingSawtoothOscillator();
} else if( strcmp( argv[2], "additive" ) == 0 ) {
oscillator = new SineOscillator();
oscillatorTwo = new SineOscillator( 523.0f );
} else {
oscillator = new SineOscillator();
}
WavWriter wavWriter( filename );
wavWriter.setBitsPerSample( 16 );
wavWriter.setStereo( false );
int dataSize = 5 * oscillator->getSampleRate() * 2; // duration in seconds * sample rate * bytes per sample
char * data = new char[dataSize];
if( oscillatorTwo != 0 ) {
for( int i = 0; i < dataSize - 1; i+=2 ) {
ByteConverter::shortToBytes( oscillator->nextSample() / 2 + oscillatorTwo->nextSample() / 2, data, i );
}
} else {
for( int i = 0; i < dataSize - 1; i+=2 ) {
ByteConverter::shortToBytes( oscillator->nextSample(), data, i );
}
}
if( wavWriter.writeWav( data, dataSize ) ) {
std::cout << "hooray! it worked!" << std::endl;
} else {
std::cout << "aww, no worky." << std::endl;
}
delete oscillator;
if( oscillatorTwo != 0 ) {
delete oscillatorTwo;
}
return 0;
}
float getNextSample(){
float vca1 = sine->getNextSample();
vca1 += chirp->getNextSample();
vca1 *= env1->getNextSample();
float vca2 = 0.0f;
vca2 += impulse->getNextSample();
// vca2 += filter->process(noise->getNextSample());
// vca2 *= env2->getNextSample();
vca2 += noise->getNextSample();
vca2 = filter->process(vca2);
vca2 *= env2->getNextSample();
float sample = vca1*(1.0-balance) + vca2*balance;
return sample;
}
//--------------------------------------------------------------
void testApp::mousePressed(int x, int y, int button){
Oscillator newOsc;
newOsc.setup(50);
osc.push_back(newOsc);
}
void runExperiment(void) {
Input.setup(true, true);
StreamOutput output; //StreamOutput is one of the ways to get sound out of a modular synth.
//It requires a CX_SoundStream to play the sounds, which is configured below.
//Configure the sound stream. See the soundBuffer example for more information about these values.
//Also see the documentation for CX_SoundStream::Configuration.
CX_SoundStream::Configuration ssConfig;
ssConfig.api = RtAudio::Api::WINDOWS_DS;
ssConfig.outputChannels = 2;
ssConfig.sampleRate = 48000;
ssConfig.bufferSize = 4096;
ssConfig.streamOptions.numberOfBuffers = 2;
CX_SoundStream ss;
ss.setup(ssConfig);
ss.start();
output.setup(&ss); //Set the CX_SoundStream ss as the sound stream for the StreamOutput.
//Now that we have an output, we can make a really basic synthesizer:
Oscillator osc;
osc.setGeneratorFunction(Oscillator::saw); //We'll generate a saw wave.
osc.frequency = 440; //At 440 Hz (A4)
Multiplier gain;
gain.setGain(-20); //Make the output quieter by 20 decibels
osc >> gain >> output; //operator>> means that osc feeds into gain which then feeds into output.
cout << "Let's listen to a saw wave for 3 seconds" << endl;
Clock.sleep(CX_Seconds(3));
//Lets add a low pass filter to the chain.
Filter lpf;
lpf.setType(Filter::LOW_PASS);
lpf.cutoff = 600; //Set the cutoff frequency of the filter to 600 Hz, so frequencies past there get attentuated.
osc >> lpf >> gain >> output; //Reconnect things so that the osc goes through the filter.
cout << "Now a filtered saw" << endl;
Clock.sleep(CX_Seconds(3));
//Lets add an envelope
Envelope env;
env.a = 0.5; //Set the attack time to .5 seconds (i.e. 500 ms). This is the length of time needed to go from 0 to 1.
env.d = 0.5; //Decay time, to go from 1 to the sustain level
env.s = 0.4; //Sustain at .4 times the full amplitude, which is reached at the end of the attack
env.r = 1.0; //Release time, time to go from the sustain level to 0
osc >> lpf >> env >> gain >> output;
cout << "Now an amp envelope on the sound will give it a slow onset on offset." << endl;
env.attack();
Clock.sleep(CX_Seconds(3));
env.release();
Clock.sleep(CX_Seconds(2));
/* You can route the output from a modular synth into a SoundBufferOutput,
which allows you to use the sounds you make in that same way that you would
use a sound buffer, including saving them to a file. */
SoundBufferOutput sbOut;
gain >> sbOut; //Without changing the other connections, route gain into sbOut, disconnecting it from output.
sbOut.setup(44100); //Use the same sample rate as the sound stream
env.attack(); //Start by priming the evelope so that sound comes out of it.
sbOut.sampleData(CX_Seconds(2)); //Sample 1 second worth of data at the given sample rate.
env.release(); //Now relase the evelope (go from the sustain phase to the release phase
sbOut.sampleData(CX_Seconds(1)); //And sample an additional 1/2 second of data.
//Now that you're done sampling, you can use the sound buffer that you made!
sbOut.sb; // <-- This is the sound buffer. See the soundBuffer example for to see how to use it in detail.
sbOut.sb.normalize(); //Its a good idea to normalize before saving to a file to get the levels up.
sbOut.sb.writeToFile("Envelope sample.wav"); //You can save it to file, like in this example, or play it using a CX_SoundBufferPlayer.
//Now we make a relatively complex synthesizer, with two oscillators, an LFO
//modifying the frequency of one of the oscillators, an envelope modifying the cutoff frequency
//of the filter, and a mixer to combine together the oscillators.
Mixer oscMix;
osc >> gain >> oscMix; //Run the main oscillator into the mixer.
//This oscillator doubles the main oscillator, except that its frequency is modified by an LFO.
Oscillator doublingOsc;
doublingOsc.setGeneratorFunction(Oscillator::saw);
Oscillator lfo;
lfo.setGeneratorFunction(Oscillator::sine);
lfo.frequency = 5;
Multiplier lfoGain;
lfoGain.amount = 2;
Adder lfoOffset;
lfoOffset.amount = osc.frequency;
//Feed to lfo signal (which goes from -1 to 1) into a multiplier to make its range a little bigger, then add an offset to put
//it into a good frequency range. This offset will be changed along with the mainOsc frequency.
lfo >> lfoGain >> lfoOffset >> doublingOsc.frequency;
Multiplier doublingOscGain;
doublingOsc >> doublingOscGain >> oscMix; //Now run the doubliing oscillator into the mixer.
//Run a mod envelope into the filter cutoff frequency.
Envelope modEnv;
modEnv.a = .1;
modEnv.d = .1;
modEnv.s = .5;
modEnv.r = .2;
Multiplier modMult;
modMult.amount = 1000;
Adder modOffset;
modOffset.amount = 400;
modEnv >> modMult >> modOffset >> lpf.cutoff;
//Change the amp envelope settings a little
env.a = .3;
env.d = .2;
env.s = .6;
env.r = .2;
//After the mixer, filter to mixed data, attach the amp envelope, and route into the output.
oscMix >> lpf >> env >> output;
drawInformation();
while (true) {
if (Input.pollEvents()) {
while (Input.Mouse.availableEvents()) {
CX_Mouse::Event ev = Input.Mouse.getNextEvent();
if (ev.type == CX_Mouse::MOVED || ev.type == CX_Mouse::DRAGGED) {
osc.frequency = pow(ev.x, 1.3);
lfoOffset.amount = osc.frequency; //We don't set the frequency of the doubling osc directly,
//instead we set the offset for the lfo that feeds into the frequency of the doubling osc.
double g = -ev.y / 20;
gain.setGain(g);
doublingOscGain.setGain(g);
cout << "Frequency = " << osc.frequency.getValue() << endl;
cout << "Gain = " << g << endl;
}
if (ev.type == CX_Mouse::PRESSED) {
env.attack();
modEnv.attack();
}
if (ev.type == CX_Mouse::RELEASED) {
env.release();
modEnv.release();
}
}
while (Input.Keyboard.availableEvents()) {
CX_Keyboard::Event ev = Input.Keyboard.getNextEvent();
ss.hasSwappedSinceLastCheck();
while (!ss.hasSwappedSinceLastCheck())
;
switch (ev.key) {
case 'T':
osc.setGeneratorFunction(Oscillator::triangle);
doublingOsc.setGeneratorFunction(Oscillator::triangle);
break;
case 'Q':
osc.setGeneratorFunction(Oscillator::square);
doublingOsc.setGeneratorFunction(Oscillator::square);
break;
case 'I':
osc.setGeneratorFunction(Oscillator::sine);
doublingOsc.setGeneratorFunction(Oscillator::sine);
break;
case 'A':
osc.setGeneratorFunction(Oscillator::saw);
doublingOsc.setGeneratorFunction(Oscillator::saw);
break;
case 'W':
osc.setGeneratorFunction(Oscillator::whiteNoise);
doublingOsc.setGeneratorFunction(Oscillator::whiteNoise);
break;
}
}
drawInformation();
}
}
}
void init_audio_synth()
{
AudioOutput::Buffer buf;
buf.dataSize = BUFFER_SIZE * CHANNEL_NUM * sizeof(int16_t);
buf.data = (uint8_t *)&g_outBuf[0][0];
g_audioOut.add_buffer(&buf);
buf.data = (uint8_t *)&g_outBuf[1][0];
g_audioOut.add_buffer(&buf);
g_audioOut.set_source(&g_audioOutConverter);
AudioBuffer audioBuf(&g_audioBuf[0], BUFFER_SIZE);
g_audioOutConverter.set_buffer(audioBuf);
g_audioOutConverter.set_source(&g_mixer);
g_kickSeq.set_sample_rate(kSampleRate);
g_kickSeq.set_tempo(100.0f);
// g_kickSeq.set_sequence("x---x---x---x-x-x---x---x---x---xx--x--x--xxx-x-");
g_kickSeq.set_sequence("x---------x---------"); //x-x----xx---");
g_kickSeq.init();
g_kickGen.set_sample_rate(kSampleRate);
g_kickGen.set_sequence(&g_kickSeq);
g_kickGen.set_freq(50.0f);
g_kickGen.enable_sustain(false);
g_kickGen.init();
g_kickGen.set_attack(0.01f);
g_kickGen.set_release(0.6f);
g_bassSeq.set_sample_rate(kSampleRate);
g_bassSeq.set_tempo(100.0f);
g_bassSeq.set_sequence("--s>>>>p--------"); //"--s>>>p-----s>>>>>>p----");
g_bassSeq.init();
g_bassGen.set_sample_rate(kSampleRate);
g_bassGen.set_sequence(&g_bassSeq);
g_bassGen.set_freq(80.0f);
g_bassGen.enable_sustain(true);
g_bassGen.init();
g_bassGen.set_attack(0.3f);
g_bassGen.set_release(3.0f);
g_filter.set_sample_rate(kSampleRate);
g_filter.set_frequency(120.0f);
g_filter.set_q(0.4f);
g_filter.recompute_coefficients();
g_filter.set_input(&g_bassGen);
g_delay.set_sample_rate(kSampleRate);
g_delay.set_maximum_delay_seconds(0.4f);
g_delay.set_delay_samples(g_kickSeq.get_samples_per_beat());
g_delay.set_feedback(0.7f);
g_delay.set_wet_mix(0.5f);
g_delay.set_dry_mix(0.8f);
g_delay.set_input(&g_kickGen);
AudioBuffer mixBuf(&g_mixBuf[0], BUFFER_SIZE);
g_mixer.set_buffer(mixBuf);
g_mixer.set_input_count(2);
g_mixer.set_input(0, &g_delay, 0.5f);
g_mixer.set_input(1, &g_bassGen, 0.34f);
// g_mixer.set_input(2, &g_tickGen, 0.3f);
}
