closes #1 add basic beats

Creates basic probabalistic beat generator - high tom, low tom, crash

Author: ianmunrobot

app/basic-beat.js

@@ -1,12 +1,14 @@
 const Tone = require('tone');
 
+// general drum compressor
 var drumCompress = new Tone.Compressor({
-		"threshold" : -12,
+		"threshold" : -30,
 		"ratio" : 6,
 		"attack" : 0.3,
 		"release" : 0.1
 	}).toMaster();
 
+// low drum part
 var drum1 = new Tone.MembraneSynth({
   "pitchDecay" : 0.016,
   "octaves" : 2,
@@ -24,6 +26,8 @@ var membranePart = new Tone.Sequence(function(time, pitch){
 membranePart.loop = true;
 membranePart.loopEnd = "1m";
 
+
+// high drum part
 var drum2 = new Tone.MembraneSynth({
   "pitchDecay" : 0.02,
   "octaves" : 10,
@@ -35,53 +39,61 @@ var drum2 = new Tone.MembraneSynth({
   "volume": -12
 }).chain(drumCompress);
 
+var dingPart = new Tone.Part(function(time, event){
+		if (Math.random() < event.prob){
+			drum2.triggerAttackRelease(event.note, event.dur, time);
+		}
+	}, [
+      {time : "0:0", note : "C5", dur : "4n + 8n", prob: 1},
+      {time : "0:2", note : "C5", dur : "8n", prob : 0.6},
+      {time : "0:2 + 4t", note : "C5", dur : "8n", prob : 0.4},
+      {time : "0:2 + 4t*2", note : "C5", dur : "8n", prob : 0.9},
+      {time : "1:0", note : "C4", dur : "4n + 8n", prob : 1},
+      {time : "1:2", note : "C5", dur : "8n", prob : 0.6},
+      {time : "1:2 + 4t", note : "C5", dur : "8n", prob : 0.4},
+      {time : "1:2 + 4t*2", note : "Eb5", dur : "8n", prob : 0.9},
+      {time : "2:0", note : "F5", dur : "4n + 8n", prob : 1},
+      {time : "2:2", note : "F5", dur : "8n", prob : 0.6},
+      {time : "2:2 + 4t", note : "F4", dur : "8n", prob : 0.4},
+      {time : "2:2 + 4t*2", note : "F5", dur : "8n", prob : 0.9},
+      {time : "3:0", note : "F5", dur : "4n + 8n", prob : 1},
+      {time : "3:2", note : "F4", dur : "8n", prob : 0.6},
+      {time : "3:2 + 4t", note : "F5", dur : "8n", prob : 0.4},
+      {time : "3:2 + 4t*2", note : "Bb4", dur : "8n", prob : 0.9}
+    ])
+  .start(0);
 
-// var membranePart2 = new Tone.Sequence(function(time, pitch){
-//   drum2.triggerAttack(pitch, time, Math.random()*0.5 + 0.5);
-// }, [null, 'D4', "Eb3", "Gb4", null, "C5", null, "Eb5", 'F5'], "16n").start(0);
-// membranePart2.loop = true;
-// membranePart2.loopEnd = "2n";
-
+dingPart.loop = true;
+dingPart.loopEnd = "2m";
 
-var bell = new Tone.MetalSynth({
+  var bell = new Tone.MetalSynth({
 			"harmonicity" : 7,
 			"resonance" : 400,
 			"modulationIndex" : 10,
 			"envelope" : {
 				"decay" : 0.4,
 			},
 			"volume" : -18
-		}).toMaster();
-		var bellPart = new Tone.Sequence(function(time, freq){
-			bell.frequency.setValueAtTime(freq, time, Math.random()*0.3 + 0.3);
-			bell.triggerAttack(time);
-		}, [150, null, 100, null, 200, 175, null, 200, null, 133, null, 200], "16t").start(0);
+		}).chain(drumCompress)
 
+var bellPart2 = new Tone.Part(function(time, event){
+  if (Math.random() < event.prob){
+    bell.frequency.setValueAtTime(event.note, time, Math.random()*0.3 + 0.3);
+    bell.triggerAttack(time);
+  }
+}, [
+  {time : "0:0", note : 150, dur : "8t", prob: 1},
+  {time : "0:0 + 8t", note : 100, dur : "8t", prob : 0.6},
+  {time : "0:0 + 8n + 16t", note : 200, dur : "16t", prob : 0.75},
+  {time : "0:0 + 8n + 8t", note : 175, dur : "8t", prob : 0.75},
+  {time : "0:1 + 8n + 16t", note : 200, dur : "8t", prob : 0.9},
+  {time : "0:1 + 16t", note : 133, dur : "8t", prob : 1},
+  {time : "0:1 + 8n + 8t", note : 200, dur : "16t", prob : 0.75}
+  ])
+.start(0)
 
-var bassPart = new Tone.Part(function(time, event){
-		if (Math.random() < event.prob){
-			drum2.triggerAttackRelease(event.note, event.dur, time);
-		}
-	}, [
-    {time : "0:0", note : "C5", dur : "4n + 8n", prob: 1},
-    {time : "0:2", note : "C5", dur : "8n", prob : 0.6},
-		{time : "0:2 + 4t", note : "C5", dur : "8n", prob : 0.4},
-    {time : "0:2 + 4t*2", note : "C5", dur : "8n", prob : 0.9},
-		{time : "1:0", note : "C4", dur : "4n + 8n", prob : 1},
-    {time : "1:2", note : "C5", dur : "8n", prob : 0.6},
-		{time : "1:2 + 4t", note : "C5", dur : "8n", prob : 0.4},
-    {time : "1:2 + 4t*2", note : "Eb5", dur : "8n", prob : 0.9},
-		{time : "2:0", note : "F5", dur : "4n + 8n", prob : 1},
-    {time : "2:2", note : "F5", dur : "8n", prob : 0.6},
-		{time : "2:2 + 4t", note : "F4", dur : "8n", prob : 0.4},
-    {time : "2:2 + 4t*2", note : "F5", dur : "8n", prob : 0.9},
-		{time : "3:0", note : "F5", dur : "4n + 8n", prob : 1},
-    {time : "3:2", note : "F4", dur : "8n", prob : 0.6},
-		{time : "3:2 + 4t", note : "F5", dur : "8n", prob : 0.4},
-    {time : "3:2 + 4t*2", note : "Bb4", dur : "8n", prob : 0.9}]).start(0);
-
-  bassPart.loop = true;
-	bassPart.loopEnd = "2m";
+bellPart2.loop = true;
+bellPart2.loopEnd = "2n"
 
 Tone.Transport.bpm.value = 72;