defaulted start values for SoundObject

updated + reorganized examples
changed process() to analyze for analyzers
changed play() to process() for effects

java/libraries/sound/examples/Demos/Envelopes/Envelopes.pde

@@ -0,0 +1,79 @@
+/*
+This sketch shows how to use envelopes and oscillators. Envelopes are pre-defined amplitude 
+distribution over time. The sound library provides an ASR envelope which stands for attach, 
+sustain, release. The amplitude rises then sustains at the maximum level and decays slowly 
+depending on pre defined time segments.
+
+      .________
+     .          ---
+    .              --- 
+   .                  ---
+   A       S        R 
+
+*/
+
+import processing.sound.*;
+
+Sound stream;
+TriOsc triOsc;
+Env env; 
+
+// Times and levels for the ASR envelope
+float attackTime = 0.001;
+float sustainTime = 0.004;
+float sustainLevel = 0.3;
+float releaseTime = 0.4;
+
+// This is an octave in MIDI notes.
+int[] midiSequence = { 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72}; 
+int duration = 200;
+// Set the note trigger
+int trigger = millis(); 
+
+// An index to count up the notes
+int note=0; 
+
+void setup() {
+  size(640, 360);
+  background(255);
+  
+  //Create and start the Sound renderer
+  stream = new Sound(this);
+  
+  // Create triangle wave and start it
+  triOsc = new TriOsc(this);
+  //triOsc.play();
+
+  // Create the envelope 
+  env  = new Env(this); 
+  
+}
+
+void draw() { 
+  
+  // If the determined trigger moment in time matches up with the computer clock and we if the 
+  // sequence of notes hasn't been finished yet the next note gets played.
+  if ((millis() > trigger) && (note<midiSequence.length)){
+    
+    // midiToFreq transforms the MIDI value into a frequency in Hz which we use to control the triangle oscillator
+    // with an amplitute of 0.8
+    triOsc.play(midiToFreq(midiSequence[note]),0.8);
+    
+    // The envelope gets triggered with the oscillator as input and the times and levels we defined earlier
+    env.play(triOsc, attackTime, sustainTime, sustainLevel, releaseTime);
+    
+    // Create the new trigger according to predefined durations and speed it up by deviding by 1.5
+    trigger = millis() + duration;
+    
+    // Advance by one note in the midiSequence;
+    note++; 
+    
+    // Loop the sequence, notice the jitter
+    if(note == 12) {note = 0;}
+  }
+} 
+
+// This function calculates the respective frequency of a MIDI note
+float midiToFreq(int note){
+    return (pow(2, ((note-69)/12.0)))*440; 
+}