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Diffstat (limited to 'src/com/jsyn/instruments/DualOscillatorSynthVoice.java')
| -rw-r--r-- | src/com/jsyn/instruments/DualOscillatorSynthVoice.java | 301 |
1 files changed, 301 insertions, 0 deletions
diff --git a/src/com/jsyn/instruments/DualOscillatorSynthVoice.java b/src/com/jsyn/instruments/DualOscillatorSynthVoice.java new file mode 100644 index 0000000..c81041f --- /dev/null +++ b/src/com/jsyn/instruments/DualOscillatorSynthVoice.java @@ -0,0 +1,301 @@ +/* + * Copyright 2010 Phil Burk, Mobileer Inc + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package com.jsyn.instruments; + +import com.jsyn.ports.UnitInputPort; +import com.jsyn.ports.UnitOutputPort; +import com.jsyn.unitgen.Add; +import com.jsyn.unitgen.Circuit; +import com.jsyn.unitgen.EnvelopeDAHDSR; +import com.jsyn.unitgen.FilterFourPoles; +import com.jsyn.unitgen.MorphingOscillatorBL; +import com.jsyn.unitgen.Multiply; +import com.jsyn.unitgen.UnitVoice; +import com.jsyn.util.VoiceDescription; +import com.softsynth.math.AudioMath; +import com.softsynth.shared.time.TimeStamp; + +/** + * Synthesizer voice with two morphing oscillators and a four-pole resonant filter. + * Modulate the amplitude and filter using DAHDSR envelopes. + */ +public class DualOscillatorSynthVoice extends Circuit implements UnitVoice { + private Multiply frequencyMultiplier; + private Multiply amplitudeMultiplier; + private Multiply detuneScaler1; + private Multiply detuneScaler2; + private Multiply amplitudeBoost; + private MorphingOscillatorBL osc1; + private MorphingOscillatorBL osc2; + private FilterFourPoles filter; + private EnvelopeDAHDSR ampEnv; + private EnvelopeDAHDSR filterEnv; + private Add cutoffAdder; + + private static MyVoiceDescription voiceDescription; + + public UnitInputPort amplitude; + public UnitInputPort frequency; + /** + * This scales the frequency value. You can use this to modulate a group of instruments using a + * shared LFO and they will stay in tune. Set to 1.0 for no modulation. + */ + public UnitInputPort frequencyScaler; + public UnitInputPort oscShape1; + public UnitInputPort oscShape2; +// public UnitInputPort oscDetune1; +// public UnitInputPort oscDetune2; + public UnitInputPort cutoff; + public UnitInputPort filterEnvDepth; + public UnitInputPort Q; + + public DualOscillatorSynthVoice() { + add(frequencyMultiplier = new Multiply()); + add(amplitudeMultiplier = new Multiply()); + add(amplitudeBoost = new Multiply()); + add(detuneScaler1 = new Multiply()); + add(detuneScaler2 = new Multiply()); + // Add tone generators. + add(osc1 = new MorphingOscillatorBL()); + add(osc2 = new MorphingOscillatorBL()); + + // Use an envelope to control the amplitude. + add(ampEnv = new EnvelopeDAHDSR()); + + // Use an envelope to control the filter cutoff. + add(filterEnv = new EnvelopeDAHDSR()); + add(filter = new FilterFourPoles()); + add(cutoffAdder = new Add()); + + filterEnv.output.connect(cutoffAdder.inputA); + cutoffAdder.output.connect(filter.frequency); + frequencyMultiplier.output.connect(detuneScaler1.inputA); + frequencyMultiplier.output.connect(detuneScaler2.inputA); + detuneScaler1.output.connect(osc1.frequency); + detuneScaler2.output.connect(osc2.frequency); + osc1.output.connect(amplitudeMultiplier.inputA); // mix oscillators + osc2.output.connect(amplitudeMultiplier.inputA); + amplitudeMultiplier.output.connect(filter.input); + filter.output.connect(amplitudeBoost.inputA); + amplitudeBoost.output.connect(ampEnv.amplitude); + + addPort(amplitude = amplitudeMultiplier.inputB, PORT_NAME_AMPLITUDE); + addPort(frequency = frequencyMultiplier.inputA, PORT_NAME_FREQUENCY); + addPort(oscShape1 = osc1.shape, "OscShape1"); + addPort(oscShape2 = osc2.shape, "OscShape2"); +// addPort(oscDetune1 = osc1.shape, "OscDetune1"); +// addPort(oscDetune2 = osc2.shape, "OscDetune2"); + addPort(cutoff = cutoffAdder.inputB, PORT_NAME_CUTOFF); + addPortAlias(cutoff, PORT_NAME_TIMBRE); + addPort(Q = filter.Q); + addPort(frequencyScaler = frequencyMultiplier.inputB, PORT_NAME_FREQUENCY_SCALER); + addPort(filterEnvDepth = filterEnv.amplitude, "FilterEnvDepth"); + + filterEnv.export(this, "Filter"); + ampEnv.export(this, "Amp"); + + frequency.setup(osc1.frequency); + frequencyScaler.setup(0.2, 1.0, 4.0); + cutoff.setup(filter.frequency); + // Allow negative filter sweeps + filterEnvDepth.setup(-4000.0, 2000.0, 4000.0); + + // set amplitudes slightly different so that they never entirely cancel + osc1.amplitude.set(0.5); + osc2.amplitude.set(0.4); + // Make the circuit turn off when the envelope finishes to reduce CPU load. + ampEnv.setupAutoDisable(this); + // Add named port for mapping pressure. + amplitudeBoost.inputB.setup(1.0, 1.0, 4.0); + addPortAlias(amplitudeBoost.inputB, PORT_NAME_PRESSURE); + + usePreset(0); + } + + /** + * The first oscillator will be tuned UP by semitoneOffset/2. + * The second oscillator will be tuned DOWN by semitoneOffset/2. + * @param semitoneOffset + */ + private void setDetunePitch(double semitoneOffset) { + double halfOffset = semitoneOffset * 0.5; + setDetunePitch1(halfOffset); + setDetunePitch2(-halfOffset); + } + + /** + * Set the detuning for osc1 in semitones. + * @param semitoneOffset + */ + private void setDetunePitch1(double semitoneOffset) { + double scale = AudioMath.semitonesToFrequencyScaler(semitoneOffset); + detuneScaler1.inputB.set(scale); + } + + /** + * Set the detuning for osc2 in semitones. + * @param semitoneOffset + */ + private void setDetunePitch2(double semitoneOffset) { + double scale = AudioMath.semitonesToFrequencyScaler(semitoneOffset); + detuneScaler2.inputB.set(scale); + } + + @Override + public void noteOff(TimeStamp timeStamp) { + ampEnv.input.off(timeStamp); + filterEnv.input.off(timeStamp); + } + + @Override + public void noteOn(double freq, double ampl, TimeStamp timeStamp) { + frequency.set(freq, timeStamp); + amplitude.set(ampl, timeStamp); + ampEnv.input.on(timeStamp); + filterEnv.input.on(timeStamp); + } + + @Override + public UnitOutputPort getOutput() { + return ampEnv.output; + } + + // Reset to basic voice. + public void reset() { + osc1.shape.set(0.0); + osc2.shape.set(0.0); + ampEnv.attack.set(0.005); + ampEnv.decay.set(0.2); + ampEnv.sustain.set(0.5); + ampEnv.release.set(1.0); + filterEnv.attack.set(0.01); + filterEnv.decay.set(0.6); + filterEnv.sustain.set(0.4); + filterEnv.release.set(1.0); + cutoff.set(500.0); + filterEnvDepth.set(3000.0); + filter.reset(); + filter.Q.set(3.9); + setDetunePitch(0.02); + } + + @Override + public void usePreset(int presetIndex) { + reset(); // start from known configuration + int n = presetIndex % presetNames.length; + switch (n) { + case 0: + break; + case 1: + ampEnv.attack.set(0.1); + ampEnv.decay.set(0.9); + ampEnv.sustain.set(0.1); + ampEnv.release.set(0.1); + cutoff.set(500.0); + filterEnvDepth.set(500.0); + filter.Q.set(3.0); + break; + case 2: + ampEnv.attack.set(0.1); + ampEnv.decay.set(0.3); + ampEnv.release.set(0.5); + cutoff.set(2000.0); + filterEnvDepth.set(500.0); + filter.Q.set(2.0); + break; + case 3: + osc1.shape.set(-0.9); + osc2.shape.set(-0.8); + ampEnv.attack.set(0.3); + ampEnv.decay.set(0.8); + ampEnv.release.set(0.2); + filterEnv.sustain.set(0.7); + cutoff.set(500.0); + filterEnvDepth.set(500.0); + filter.Q.set(3.0); + break; + case 4: + osc1.shape.set(1.0); + osc2.shape.set(0.0); + break; + case 5: + osc1.shape.set(1.0); + setDetunePitch1(0.0); + osc2.shape.set(0.9); + setDetunePitch1(7.0); + break; + case 6: + osc1.shape.set(0.6); + osc2.shape.set(-0.2); + setDetunePitch1(0.01); + ampEnv.attack.set(0.005); + ampEnv.decay.set(0.09); + ampEnv.sustain.set(0.0); + ampEnv.release.set(1.0); + filterEnv.attack.set(0.005); + filterEnv.decay.set(0.1); + filterEnv.sustain.set(0.4); + filterEnv.release.set(1.0); + cutoff.set(2000.0); + filterEnvDepth.set(5000.0); + filter.Q.set(7.02); + break; + default: + break; + } + } + + private static final String[] presetNames = { + "FastSaw", "SlowSaw", "BrightSaw", + "SoftSine", "SquareSaw", "SquareFifth", + "Blip" + }; + + static class MyVoiceDescription extends VoiceDescription { + String[] tags = { + "electronic", "filter", "analog", "subtractive" + }; + + public MyVoiceDescription() { + super(DualOscillatorSynthVoice.class.getName(), presetNames); + } + + @Override + public UnitVoice createUnitVoice() { + return new DualOscillatorSynthVoice(); + } + + @Override + public String[] getTags(int presetIndex) { + return tags; + } + + @Override + public String getVoiceClassName() { + return DualOscillatorSynthVoice.class.getName(); + } + } + + public static VoiceDescription getVoiceDescription() { + if (voiceDescription == null) { + voiceDescription = new MyVoiceDescription(); + } + return voiceDescription; + } + + +} |