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/*
* Copyright 2009 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.UnitOutputPort;
import com.jsyn.unitgen.Circuit;
import com.jsyn.unitgen.EnvelopeAttackDecay;
import com.jsyn.unitgen.PinkNoise;
import com.jsyn.unitgen.UnitVoice;
import com.jsyn.util.VoiceDescription;
import com.softsynth.shared.time.TimeStamp;
/**
* Cheap synthetic cymbal sound.
*/
public class NoiseHit extends Circuit implements UnitVoice {
EnvelopeAttackDecay ampEnv;
PinkNoise noise;
private static final int NUM_PRESETS = 3;
public NoiseHit() {
// Create unit generators.
add(noise = new PinkNoise());
add(ampEnv = new EnvelopeAttackDecay());
noise.output.connect(ampEnv.amplitude);
ampEnv.export(this, "Amp");
// Make the circuit turn off when the envelope finishes to reduce CPU load.
ampEnv.setupAutoDisable(this);
usePreset(0);
}
@Override
public void noteOff(TimeStamp timeStamp) {
}
@Override
public void noteOn(double freq, double ampl, TimeStamp timeStamp) {
noise.amplitude.set(ampl, timeStamp);
ampEnv.input.trigger();
}
@Override
public UnitOutputPort getOutput() {
return ampEnv.output;
}
@Override
public void usePreset(int presetIndex) {
int n = presetIndex % NUM_PRESETS;
switch (n) {
case 0:
ampEnv.attack.set(0.001);
ampEnv.decay.set(0.1);
break;
case 1:
ampEnv.attack.set(0.03);
ampEnv.decay.set(1.4);
break;
default:
ampEnv.attack.set(0.9);
ampEnv.decay.set(0.3);
break;
}
}
static class MyVoiceDescription extends VoiceDescription {
static String[] presetNames = {
"ShortNoiseHit", "LongNoiseHit", "SlowNoiseHit"
};
static String[] tags = {
"electronic", "noise"
};
public MyVoiceDescription() {
super("NoiseHit", presetNames);
}
@Override
public UnitVoice createUnitVoice() {
return new NoiseHit();
}
@Override
public String[] getTags(int presetIndex) {
return tags;
}
@Override
public String getVoiceClassName() {
return NoiseHit.class.getName();
}
}
public static VoiceDescription getVoiceDescription() {
return new MyVoiceDescription();
}
}
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