RandomGenerator

.idea/.name

@@ -0,0 +1 @@
+procedural-musix

.idea/codeStyles/Project.xml

@@ -0,0 +1,10 @@
+<component name="ProjectCodeStyleConfiguration">
+  <code_scheme name="Project" version="173">
+    <JetCodeStyleSettings>
+      <option name="CODE_STYLE_DEFAULTS" value="KOTLIN_OFFICIAL" />
+    </JetCodeStyleSettings>
+    <codeStyleSettings language="kotlin">
+      <option name="CODE_STYLE_DEFAULTS" value="KOTLIN_OFFICIAL" />
+    </codeStyleSettings>
+  </code_scheme>
+</component>

.idea/codeStyles/codeStyleConfig.xml

@@ -0,0 +1,5 @@
+<component name="ProjectCodeStyleConfiguration">
+  <state>
+    <option name="USE_PER_PROJECT_SETTINGS" value="true" />
+  </state>
+</component>

src/main/kotlin/AudioSink.kt

@@ -18,6 +18,7 @@ class AudioSink : Thread() {
         get() = chunks.size
 
     fun enqueueChunk(chunk: AudioChunk) {
+        println(chunk.tick)
         chunks.add(chunk.toBytes())
     }
 

src/main/kotlin/Main.kt

@@ -3,6 +3,7 @@ import Params.TWO_PI
 import Params.as_samples
 import filter.Compressor
 import filter.Limiter
+import java.lang.StrictMath.pow
 import kotlin.math.cos
 import kotlin.math.pow
 import kotlin.math.sin
@@ -35,7 +36,24 @@ class SineWaveGenerator(var tone: Float) : StepGenerator() {
     }
 }
 
-
+class RandomGenerator(var tone: Float) :StepGenerator() {
+    val N = 200
+    val loudness = fun(i:Int): Double {
+        return i.toDouble().pow(-0)
+    }
+    var loudnessSum = 0.0
+    init {
+        for (i in 1 .. N)
+            loudnessSum+=loudness(i)
+    }
+    override fun generateSingle(time: Float): Float {
+        var p : Double = 0.0
+        for (i in 1 .. N) {
+            p += sin(time * toFrequency(tone) * TWO_PI * i) * loudness(i)
+        }
+        return (p/loudnessSum).toFloat()
+    }
+}
 
 fun main(args: Array<String>) {
     val sink = AudioSink()
@@ -46,7 +64,7 @@ fun main(args: Array<String>) {
     gen.globalEffects.add(Compressor(as_samples(.4f).toInt())::apply)
     gen.globalEffects.add(Limiter(.9f)::apply)
 
-    gen.generators.add(Chain(SineWaveGenerator(0f)::generate, ArrayList()))
+    gen.generators.add(Chain(RandomGenerator(0f)::generate, ArrayList()))
 
     sink.enqueueChunk(gen.nextChunk())