added everything

2009-01-04 14:52:21 +00:00 · 2009-01-04 14:52:21 +00:00 · 8bb1e9e6f2
commit 8bb1e9e6f2
parent cfe6c109f7
90 changed files with 1004 additions and 0 deletions
--- a/.DS_Store
+++ b/.DS_Store
--- a/README.textile
+++ b/README.textile
@ -0,0 +1,41 @@
+h1. "Live Beatbox":http://github.com/rfwatson/live-beatbox
+
+!http://rfwatson.github.com/images/beatbox.png!
+
+
+Experimental drum machine which uses vocalization to select synthetic drum hits which best match beat-boxed sound.
+
+Currently uses a combination of MFCC, SpectralCentroid and ZeroCrossing measurements to analyze and match the timbre of the sounds.
+
+In super-alpha-beta state! It may or may not work on your setup.
+
+h2. Requirements
+
+* "SuperCollider":http://supercollider.sourceforge.net
+
+* Some sort of external microphone and audio interface. I use an Edirol FA101 when building this. I haven't got it working well with the Mac's internal sound
+
+* OSX - unless you want to make the GUI stuff cross-platform.
+
+h2. Keyboard shortcuts
+
+| @F1@      | Record mode |
+| @F2@      | Preview recorded sound |
+| @F3@      | Jamming mode |
+| @Space@   | Start/stop sequencer |
+| @Return@  | Add hit to seq (while playing) |
+| @Backsp.@ | Remove hit (while playing) |
+| @Up/Down@ | Select channel |
+| @Left/Rt@ | Crossfader control |
+
+h2. TODO
+
+* Add analysis of amplitude envelope, only uses timbral analysis at the moment which while quite good it needs amp.env. comparison to be really intuitive
+* Add ability to scan and add samples via GUI, from any location
+* Improve doc
+* Lots more...
+
+h2. Contact me
+
+Via "Github":http://github.com/rfwatson
+
--- a/classes/.DS_Store
+++ b/classes/.DS_Store
--- a/classes/RFWGens.sc
+++ b/classes/RFWGens.sc
@ -0,0 +1,11 @@
+AverageOutput : UGen {
+  *ar {
+    arg in, trig=0.0, mul=1.0, add=0.0;
+    ^this.multiNew('audio', in, trig).madd(mul, add);
+  }
+  
+  *kr {
+    arg in, trig=0.0, mul=1.0, add=0.0;
+    ^this.multiNew('control', in, trig).madd(mul, add);
+  }
+}
--- a/classes/beat.sc
+++ b/classes/beat.sc
@ -0,0 +1,101 @@
+Beat {
+  classvar <maxFrames;
+  var <signal, <nframes, <server, sigbuf, <sample, sampbuf, <path, <features, fftbuf, bus, <nearest, <nearestPath;
+  
+  *initClass {
+    maxFrames = 44100; // 1 second of audio, which is more than enough.
+  }
+  
+  *newFromSignal { |signal, server, donefunc|
+    ^super.new.initFromSignal(signal, server, donefunc);
+  }
+  
+  *newFromPath { |path, server, donefunc|
+    ^super.new.initFromPath(path, server, donefunc);
+  }
+  
+  initFromSignal { |aSignal, aServer, donefunc|
+    signal      = aSignal;
+    nframes     = signal.size;
+    server      = aServer;
+    
+    // we always pass in a mono signal so no need to check here
+    sigbuf      = Buffer.alloc(server, nframes, 1);
+    sigbuf.loadCollection(signal, action: {
+      donefunc.(this)
+    });
+  }
+  
+  initFromPath { |aPath, aServer, donefunc|
+    var sndfile, rawsignal;
+    path        = aPath;
+    server      = aServer;
+    sndfile     = SoundFile.openRead(path);
+    
+    if(sndfile.numFrames > maxFrames) {
+      Error("Sound file too large.").throw;
+    } {
+      rawsignal   = Signal.newClear(sndfile.numFrames * sndfile.numChannels);
+      sndfile.readData(rawsignal);
+    
+      if(sndfile.numChannels == 1) {
+        signal = rawsignal;
+      } {
+        signal = rawsignal.clump(sndfile.numChannels).flop[0]; // channel 0
+      };
+    
+      sigbuf = Buffer.loadCollection(server, signal, 1, action: {
+        donefunc.(this)
+      });
+    };
+  }
+  
+  play { |xfade=0.0, mul=1.0|
+    var synth;
+
+    // why isnt doneAction working for me?
+    synth = Synth(\beatboxplayer, [\bufnum1, sigbuf, \bufnum2, sampbuf, \crossfade, xfade, \mul, mul]);
+    SystemClock.sched(3.0, { synth.free });
+  }
+
+  analyse { |donefunc|
+    var duration, synth;
+
+    duration  = sigbuf.numFrames / server.sampleRate;
+    
+    bus         = Bus.control(server, 22);  // 20 MFCCs, 1 Spectral Centroid, 1 ZCR
+    fftbuf      = Buffer.alloc(server, 1024, 1);
+
+    server.makeBundle(1.0) {
+      synth = Synth(\beatboxanalyzer, [\bufnum, sigbuf, \fftbuf, fftbuf, \cbus1, bus.index, \cbus2, bus.index + 20, \cbus3, bus.index + 21]);
+    };
+  
+    server.makeBundle(1.0 + duration, {
+      bus.getn(22) { |theFeatures|
+        features = theFeatures;
+        donefunc.(this);
+      };
+    });
+      
+    // 2 seconds later, free the synth, fft-buffer and the control bus.
+    SystemClock.sched(3.0 + duration) {
+      synth.free;
+      fftbuf.free;
+      bus.free;
+    };
+  }
+  
+  nearest_{ |path|
+    var sndfile, rawsignal, len;
+
+    nearestPath = path;
+    sndfile     = SoundFile.openRead(path);
+    rawsignal   = Signal.newClear(sndfile.numFrames * sndfile.numChannels);
+    sndfile.readData(rawsignal);
+    sample      = rawsignal.clump(2).flop[0];
+    
+    sampbuf = Buffer.readChannel(server, path, channels: [0], action: { |buf|
+      sampbuf = buf;
+    });
+  }
+}
--- a/classes/box.sc
+++ b/classes/box.sc
@ -0,0 +1,379 @@
+BeatBox {
+  var <>basepath;
+  
+  var w, <layout, <scope, <server, beats, nchannels, seq, data, recbutton;
+  var onsetListener, statusText, thresholdText, lagText, scope, <lowerStatus;
+  var fftbuf, recbuf, synth, isListening, isRecording, isJamming, recStart;
+  var jambutton;
+  
+  *new { |basepath|
+    ^super.new.init(basepath);
+  }
+  
+  init { |aBasePath|
+    basepath = (aBasePath ? "/l/cm2/coursework/task3") ++ "/";
+        
+    w = SCWindow("Beatbox Beta 1", Rect(200, 700, 520, 558), resizable: false);
+
+    // keyboard shorts    
+    w.view.keyDownAction_{ |...args| 
+      var shift = args[2];
+      var code = args.last;
+
+      code.switch(
+        36, { // enter
+            seq.setCurrentHit;  
+        },
+        13, { // backspace
+            seq.clearCurrentHit;
+        },
+        49, {
+          // move to seq
+          seq.mainbutton.value_((seq.mainbutton.value + 1) % 2).doAction;
+        },
+        122, {
+          if(recbutton.enabled) {
+            recbutton.value_((recbutton.value + 1) % 2).doAction;  
+          }
+        },
+        120, {
+          this.preview;
+        },
+        99, {
+          if(jambutton.enabled) {
+            jambutton.value_((jambutton.value + 1) % 2).doAction;  
+          }
+        },
+        123, {
+          // move to seq
+          if(seq.xfadeval > 0.0) {
+            seq.xfadeslid.value_(seq.xfadeval - 0.1).doAction;
+          }
+        },
+        124, {
+          // move to seq
+          if(seq.xfadeval < 1.0) {
+            seq.xfadeslid.value_(seq.xfadeval + 0.1).doAction;
+          }
+        },
+        126, { // move to seq
+          seq.currentChannel = (seq.currentChannel - 1) % seq.numChannels;
+          seq.selects[seq.currentChannel].value_(1).doAction;
+        },
+        125, { // move to seq
+          seq.currentChannel = (seq.currentChannel + 1) % seq.numChannels;          
+          seq.selects[seq.currentChannel].value_(1).doAction;
+        }
+      )
+    };
+    
+    layout      = FlowLayout(w.view.bounds);
+    w.view.decorator = layout;
+    
+    nchannels   = 8;
+    
+    server      = Server.local;
+    server.doWhenBooted {
+      recbuf    = Buffer.alloc(server, server.sampleRate);  
+      fftbuf    = Buffer.alloc(server, 512);
+    };
+    
+    isListening = false;
+    isRecording = false;
+    isJamming   = false;
+    beats       = Array.newClear(nchannels);
+    
+    File.use(basepath ++ "data.sc", "r") { |file|
+      data = file.readAllString.interpret;
+    };
+        
+    this.initDisplay;
+  }
+  
+  initDisplay {
+    recbutton = SCButton(w, Rect(5, 5, 100, 25))
+      .states_([
+        [ "Record (F1)", Color.black, Color.green ],
+        [ "Stop (F1)", Color.white, Color.red ],
+      ])
+      .action_{ |button| this.switch(button) }
+      .keyDownAction_{ nil };
+      
+    SCButton(w, Rect(5, 5, 100, 25))
+      .states_([
+        [ "Preview (F2)", Color.black, Color.green ],
+      ])
+      .action_{ |button| this.preview(button) }
+      .keyDownAction_{ nil };
+      
+    jambutton = SCButton(w, Rect(5, 5, 100, 25))
+      .states_([
+        [ "Jam (F3)", Color.black, Color.green ],
+        [ "Stop (F1)", Color.white, Color.red ],
+      ])
+      .action_{ |button| this.jam(button.value) }
+      .keyDownAction_{ nil };
+
+      
+    layout.nextLine;
+    layout.nextLine;
+      
+    SCStaticText(w, Rect(5, 5, 200, 25))
+      .string_("Threshold")
+      .font_(Font("Helvetica-Bold", 12));
+
+
+    SCStaticText(w, Rect(200, 5, 30, 25))
+      .string_("Lag")
+      .font_(Font("Helvetica-Bold", 12));
+      
+    layout.nextLine;
+      
+    SCSlider(w, Rect(5, 5, 100, 25))
+      .step_(0.1)
+      .value_(0.3)
+      .action_{ |slider| 
+        var value = slider.value.clip(0.1, 1.0);
+        synth.set(\threshold, value);
+        thresholdText.string_(value.asString);
+      }
+      .keyDownAction_{ nil };
+      
+    thresholdText = SCStaticText(w, Rect(5, 5, 95, 25))
+      .string_("0.3");
+      
+    SCSlider(w, Rect(200, 5, 100, 25))
+      .step_(0.05)
+      .value_(0.1)
+      .action_{ |slider| 
+        var value = slider.value.clip(0.1, 1.0);
+        synth.set(\lag, value);
+        lagText.string_(value.asString);
+      }
+      .keyDownAction_{ nil };
+      
+    lagText = SCStaticText(w, Rect(5, 5, 20, 25))
+      .string_("0.1");
+      
+    layout.nextLine;
+    
+    statusText = SCStaticText(w, Rect(5, 5, 510, 25))
+      .background_(Color.grey);
+    
+    layout.nextLine;
+    
+    scope = SCUserView(w, Rect(5, 5, 510, 150))
+      .relativeOrigin_(true)
+      .background_(Color.black)
+      .drawFunc_({ this.drawWaveform });
+      
+    layout.nextLine;
+    
+    lowerStatus = SCStaticText(w, Rect(5, 5, 510, 25))
+      .background_(Color.grey);
+      
+    layout.nextLine;
+    
+    seq = Sequencer(w, Rect(5, 5, 510, 300), server, beats, this);
+    
+    w.onClose = { scope.free };
+    w.front;
+  }
+  
+  switch { |button|
+    if(button.value == 1) { 
+      jambutton.enabled = false;
+      this.listen;
+    } { 
+      this.silenceDetected;
+      this.ignore;
+      jambutton.enabled = true;
+    }
+  }
+  
+  jam { |value| // 0 is on, 1 is off: relates to SCButton value
+    if(value == 1) {
+      recbutton.enabled = false;
+      isJamming = true;
+      if(seq.playing.not) {
+        seq.play
+      };
+      this.listen(amp: 0.0);
+    } {
+      isJamming = false;
+      recbutton.enabled = true;
+      jambutton.value = 0;
+      this.ignore;
+    }
+  }
+  
+  preview { 
+    seq.previewCurrentChannel;
+  }
+  
+  onsetDetected {    
+    Post << "Onset!" << $\n;
+    if(isJamming) {
+      {
+        seq.setCurrentHit;
+      }.defer;
+    } {
+      if(isRecording.not) {
+        isRecording = true;
+        synth.set(\t_resetRecord, 1);
+        recStart = SystemClock.seconds;
+        { statusText.background_(Color.red).stringColor_(Color.white).background_(Color.red).string_("RECORDING") }.defer;
+      }      
+    }
+  }
+  
+  silenceDetected {
+    var dursamps, sndfile, signal, beat;
+    Post << "Silence!" << $\n;
+        
+    if(isRecording) {
+      synth.run(false);
+      { 
+        statusText.background_(Color.green).stringColor_(Color.black).string_("Analysing...");
+      }.defer;
+      dursamps = ((SystemClock.seconds - recStart) * server.sampleRate).asInteger;
+      recbuf.loadToFloatArray(0, dursamps) { |floatdata|
+        // check received from server OK - sometimes fails
+        if(floatdata.isEmpty.not) {
+          signal = Signal.newFrom(floatdata);
+          signal.normalize;
+          
+          beats[seq.currentChannel] = Beat.newFromSignal(signal, server);
+          beats[seq.currentChannel].analyse { |beat| 
+            this.findNearest(beat);
+            {
+              // allow new recording to begin only after completely finsihed
+              scope.refresh;
+              isRecording = false;
+              statusText.background_(Color.grey).stringColor_(Color.black).string_("");
+              this.updateLowerStatus;
+              recbutton.value_(0).doAction;
+            }.defer;
+          }
+        }
+      }
+    }
+  }
+  
+  listen { |amp=1.0|
+    var msg, action;
+    
+    if(isListening.not) { // start listening to input
+      synth = Synth(\beatboxlistener, [\out, 0, \in, 0, \fftbuf, fftbuf, \recbuf, recbuf, \amp, amp]);
+      
+      onsetListener = OSCresponderNode(nil, '/tr') { |time, responder, msg|
+        action = msg[3];
+        action.asInteger.switch(
+          1, { this.onsetDetected },
+          2, { this.silenceDetected }
+        );
+      }.add;
+      
+      statusText.background_(Color.grey).stringColor_(Color.black).string_("Waiting for input...");
+      isListening = true;
+    }
+  }
+  
+  ignore {
+    if(isListening) {
+      var wasRecording = isRecording;
+      this.silenceDetected;
+      synth.free;
+      onsetListener.remove;
+      
+      if(wasRecording) {
+        statusText.background_(Color.green).stringColor_(Color.black).string_("Analysing...");        
+      } {
+        statusText.background_(Color.grey).stringColor_(Color.black).string_("");  
+      };
+      
+      isListening = false;
+    }
+  }
+  
+  // TODO move to Beat.sc
+  findNearest { |beat|
+    var p, total;
+    var nearest = 10e10; 
+    var neighbour;
+
+    data.getPairs.clump(2).do { |pair|
+      var fname, features;
+      # fname, features = pair;
+      total = 0.0;
+      features.size.do { |i|
+        p = (beat.features[i] - features[i]).squared;
+        total = total + p;
+      };
+
+      if(total < nearest) {
+        neighbour = fname;
+        nearest = total;
+      };
+    };
+    
+    if(neighbour.isNil) { // FIX sometimes a strange bug causes a lot of nan's to be produced
+      "There was an error analysing this sound. Try another".postln;
+    } {
+      beat.nearest = neighbour;
+    }    
+  }
+  
+  refresh {
+    scope.refresh
+  }
+  
+  updateLowerStatus {
+    var beat = seq.beats[seq.currentChannel];
+    beat !? {
+      beat.nearestPath !? {
+        lowerStatus.string_(beat.nearestPath.basename);  
+        ^this;
+      }
+    };
+    
+    lowerStatus.string_("");                
+  }
+  
+  drawWaveform {
+    // why is SCSoundFileView so frustrating?
+    var sig, maximums, x2, y1, y2, p1, p2;
+    var beat = beats[seq.currentChannel];
+        
+    beat !? {
+      p1 = 0 @ 75;
+      
+      if(beat.sample.notNil) {
+        sig = (beat.sample * (seq.xfadeval)) +.s (beat.signal * (1 - seq.xfadeval));
+      } {
+        sig = beat.signal;
+      };
+
+      maximums = sig.clump(sig.size / 510).collect{ |window|
+        var posmax, negmax;
+        posmax = window.maxItem;
+        negmax = window.minItem;
+
+        if(posmax.abs > negmax.abs)
+          { posmax } { negmax }
+      };
+
+      Pen.use {
+        Color(0.3, 1, 0.3).set;
+        maximums.do { |max, x1|
+          p2 = x1 @ (75 - (75 * max));
+          Pen.moveTo(p1);
+          Pen.lineTo(p2);
+          Pen.stroke;
+          
+          p1 = p2;
+        }
+      }
+    }
+  }
+}
--- a/classes/sequencer.sc
+++ b/classes/sequencer.sc
@ -0,0 +1,237 @@
+Sequencer {
+  var w, view, channels, buttons, <buttonvals, <selects, indicators, beatbox, routine, tempoBox, startedTime;
+  var <xfadeslid, <xfadeval, <>currentChannel, <beats, server, <mainbutton, <playing;
+  
+  *new { |w, bounds, server, beats, beatbox, nchannels=8|
+    ^super.new.init(w, bounds, server, beats, beatbox, nchannels);
+  }
+          
+  init { |aWindow, bounds, aServer, someBeats, aBeatBox, nchannels|
+    w               = aWindow;
+    channels        = 0.0 ! 16 ! nchannels;
+    indicators      = Array.newClear(16);
+    playing         = false;
+    beats           = someBeats;
+    server          = aServer;
+    beatbox         = aBeatBox;
+    buttons         = List[] ! nchannels; // the buttons
+    buttonvals      = List[] ! nchannels; // mirror image of their values: so I can reach them without {}.defer
+    selects         = List[];
+    currentChannel  = 0;
+    xfadeval        = 0.0;
+    
+    this.initDisplay(bounds);
+    this.initRoutine;
+  }
+  
+  initRoutine {
+    routine = Routine {
+      var n = 0, hit, mul;
+      
+      inf.do {
+        hit = n % 16;
+        
+        indicators.do { |light, col|
+          if(col == hit) { 
+            { light.value = 1 }.defer(0.2)
+          } {
+            { light.value = 0 }.defer(0.2)
+          } 
+        };
+        
+        server.bind {
+          channels.size.do { |channel|
+            if(buttonvals[channel][hit] > 0) {
+              buttonvals[channel][hit].switch(
+                1, { mul = 0.3 },
+                2, { mul = 0.7 },
+                3, { mul = 1.0 }
+              );
+              beats[channel].play(xfadeval, mul)
+            }
+          }
+        };
+
+        n = n + 1;
+        (((60 / tempoBox.value)) / 4).wait
+      }
+    }
+  }
+  
+  initDisplay { |bounds|        
+    var cbar, tbar;
+    
+    view      = SCVLayoutView(w, bounds);
+    view.background_(Color.grey);
+    
+    cbar = SCHLayoutView(view, Rect(5, 5, 510, 25));
+    
+    mainbutton = SCButton(cbar, 100 @ 20)
+      .states_([
+        [ "Play", Color.black, Color.green ],
+        [ "Stop", Color.white, Color.red ]
+      ])
+      .action_{ |button|
+        button.value.switch(
+          0, { this.stop },
+          1, { this.play }
+        )
+      }
+      .keyDownAction_{ nil };
+
+    SCStaticText(cbar, 30 @ 20)
+      .string_("");    
+    
+    SCStaticText(cbar, 30 @ 20)
+      .string_("BPM");
+    
+    SCSlider(cbar, 60 @ 20)
+      .action_{ |slid|
+        var spec = [80, 180, \linear, 1].asSpec;
+        tempoBox.value = spec.map(slid.value);
+      }
+      .keyDownAction_{ nil }
+      .value_(0.5);
+      
+    tempoBox = SCNumberBox(cbar, Rect(5, 5, 60, 20))
+      .value_(130);
+      
+    SCStaticText(cbar, 30 @ 20)
+      .string_("");    
+    
+    SCStaticText(cbar, 42 @ 20)
+      .string_("XFader");
+
+    xfadeslid = SCSlider(cbar, 60 @ 20)
+      .action_{ |slider| 
+        xfadeval = slider.value;
+        beatbox.refresh;
+      }
+      .keyDownAction_{ nil };
+
+    tbar = SCHLayoutView(view, Rect(5, 5, 510, 20));
+    
+    SCStaticText(tbar, Rect(5, 5, 60, 20));
+    
+    16.do { |n|
+      indicators[n] = SCButton(tbar, Rect(5, 5, 20, 20))
+        .states_([
+          [ "", Color.grey, Color.grey ],
+          [ "", Color.black, Color.green ]
+        ])
+        .enabled_(false)
+    };
+    
+    channels.size.do { |channel|
+      var button;
+      var hbox = SCHLayoutView(view, Rect(5, 5, 380, 20));
+      hbox.background_(Color(0.4, 0.4, 0.4));
+      
+      button = SCButton(hbox, Rect(5, 5, 60, 20))
+        .states_([
+          [ "Select", Color.black, Color.grey ],
+          [ "Select", Color.black, Color.yellow ]
+        ])
+        .action_{ |thisButton|
+          view.children[2..channels.size+1].do { |hbox, n|
+            var anotherButton = hbox.children.first;
+            if(thisButton == anotherButton) {
+              currentChannel = n;
+              thisButton.value = 1;
+              beatbox.scope.refresh;
+              beatbox.updateLowerStatus;
+             } {
+              anotherButton.value = 0;
+            }
+          }
+        }
+        .keyDownAction_{ nil };
+        
+      if(channel == 0)
+        { button.value = 1 } { button.value = 0 };
+        
+      selects.add(button);
+      
+      16.do { |n|
+        var button;
+        button = SCButton(hbox, Rect(5, 5, 20, 20))
+          .states_([
+            [ "", Color.white, Color.grey ],
+            [ "x", Color.black, Color.yellow ],
+            [ "x", Color.black, Color(1.0, 0.55, 0.0) ],
+            [ "X", Color.white, Color.red ]
+          ])
+          .action_{ |button|
+            buttonvals[channel][n] = button.value;
+          }
+          .keyDownAction_{ nil };
+          
+        buttons[channel].add(button);
+        buttonvals[channel].add(0);
+      }
+    }
+  }
+  
+  play {
+    if(playing.not) {
+      startedTime = SystemClock.seconds;
+      routine.play;
+      playing = true;
+      mainbutton.value = 1;
+    }
+  }
+  
+  stop {
+    if(playing) {
+      routine.stop;
+      this.initRoutine;
+      beatbox.jam(0);
+      indicators.do { |light| { light.value = 0 }.defer(0.2) };
+      playing = false;      
+      mainbutton.value = 0;
+    }
+  }
+  
+  setCurrentHit {
+    var currentHit = this.currentHit;
+    beats[currentChannel].play;
+    buttonvals[currentChannel][currentHit] = 2;
+    buttons[currentChannel][currentHit].value = 2;
+  }
+  
+  clearCurrentHit {
+    var currentHit = this.currentHit;
+    buttonvals[currentChannel][currentHit] = 0;
+    buttons[currentChannel][currentHit].value = 0;
+  }
+  
+  currentHit {
+    var durplaying, bardur, sdur, thisbar, currhit;
+
+    if(playing) {
+      durplaying = SystemClock.seconds - startedTime;
+      bardur = (60 / tempoBox.value) * 4;
+      sdur = bardur / 16;
+      thisbar = durplaying % bardur;
+      currhit = ((thisbar / sdur).asInteger - 1) % 16; 
+    
+      ^currhit      
+    } {
+      ^0
+    }
+  }
+  
+  allButtons {
+    ^view.children[1..9].collect{ |hview| 
+      hview.children[1..16]
+    };
+  }
+  
+  numChannels {
+    ^channels.size;
+  }
+  
+  previewCurrentChannel {
+    beats[currentChannel].play(xfadeval, 0.7)
+  }
+}
--- a/data.sc
+++ b/data.sc
@ -0,0 +1,11 @@
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--- a/help/AverageOutput.html
+++ b/help/AverageOutput.html
@ -0,0 +1,45 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
+<html>
+<head>
+<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
+<meta http-equiv="Content-Style-Type" content="text/css">
+<title></title>
+<meta name="Generator" content="Cocoa HTML Writer">
+<meta name="CocoaVersion" content="949.35">
+<style type="text/css">
+p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 18.0px Helvetica}
+p.p2 {margin: 0.0px 0.0px 0.0px 0.0px; font: 12.0px Helvetica; min-height: 14.0px}
+p.p3 {margin: 0.0px 0.0px 0.0px 0.0px; font: 12.0px Helvetica}
+p.p4 {margin: 0.0px 0.0px 0.0px 0.0px; font: 14.0px Helvetica}
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+p.p7 {margin: 0.0px 0.0px 0.0px 0.0px; font: 9.0px Monaco; min-height: 12.0px}
+p.p8 {margin: 0.0px 0.0px 0.0px 57.0px; text-indent: -57.0px; font: 9.0px Monaco; color: #a02411}
+p.p9 {margin: 0.0px 0.0px 0.0px 0.0px; font: 9.0px Monaco}
+span.s1 {text-decoration: underline}
+</style>
+</head>
+<body>
+<p class="p1"><b>AverageOutput</b></p>
+<p class="p2"><br></p>
+<p class="p3">The mean average output since the last received trigger.</p>
+<p class="p2"><br></p>
+<p class="p4"><b><span class="s1">Class methods</span></b></p>
+<p class="p2"><br></p>
+<p class="p5"><b>*ar(in, trig, mul, add)</b></p>
+<p class="p5"><b>*kr(in, trig, mul, add)</b></p>
+<p class="p6"><b></b><br></p>
+<p class="p6"><b></b><br></p>
+<p class="p3"><b>in - </b>input signal.</p>
+<p class="p2"><br></p>
+<p class="p3"><b>trig</b> -<span class="Apple-converted-space">  </span>if changes from &lt;= 0 to &gt; 0, resets average and count to zero.</p>
+<p class="p2"><br></p>
+<p class="p2"><br></p>
+<p class="p3"><i>Examples</i></p>
+<p class="p7"><br></p>
+<p class="p8">// sine oscillator, average slowly settles to zero</p>
+<p class="p9">a = { AverageOutput.ar(SinOsc.ar(10000)).poll }.play;</p>
+<p class="p7"><br></p>
+<p class="p9">a.free;</p>
+</body>
+</html>
--- a/plugins/RFWGens.scx
+++ b/plugins/RFWGens.scx
--- a/run.sc
+++ b/run.sc
@ -0,0 +1,5 @@
+(
+Server.local.doWhenBooted {
+  BeatBox(Document.current.dir);  
+};
+)
--- a/samples/.DS_Store
+++ b/samples/.DS_Store
--- a/samples/Boosh.wav
+++ b/samples/Boosh.wav
--- a/samples/Clap
+++ b/samples/Clap
--- a/samples/Clap
+++ b/samples/Clap
--- a/samples/Clap
+++ b/samples/Clap
--- a/samples/Clap
+++ b/samples/Clap
--- a/samples/Clap
+++ b/samples/Clap
--- a/samples/Clap
+++ b/samples/Clap
--- a/samples/Clap
+++ b/samples/Clap
--- a/samples/Clap
+++ b/samples/Clap
--- a/samples/Closed
+++ b/samples/Closed
--- a/samples/Closed
+++ b/samples/Closed
--- a/samples/Closed
+++ b/samples/Closed
--- a/samples/Closed
+++ b/samples/Closed
--- a/samples/Closed
+++ b/samples/Closed
--- a/samples/Closed
+++ b/samples/Closed
--- a/samples/Closed
+++ b/samples/Closed
--- a/samples/Cybertraffic.wav
+++ b/samples/Cybertraffic.wav
--- a/samples/Dang.wav
+++ b/samples/Dang.wav
--- a/samples/Jive
+++ b/samples/Jive
--- a/samples/Jive
+++ b/samples/Jive
--- a/samples/Jive
+++ b/samples/Jive
--- a/samples/Jive
+++ b/samples/Jive
--- a/samples/Kick
+++ b/samples/Kick
--- a/samples/Kick
+++ b/samples/Kick
--- a/samples/Kick
+++ b/samples/Kick
--- a/samples/Kick
+++ b/samples/Kick
--- a/samples/Kick
+++ b/samples/Kick
--- a/samples/Kick
+++ b/samples/Kick
--- a/samples/Kick
+++ b/samples/Kick
--- a/samples/Kick
+++ b/samples/Kick
--- a/samples/Kick
+++ b/samples/Kick
--- a/samples/Kick
+++ b/samples/Kick
--- a/samples/Kick
+++ b/samples/Kick
--- a/samples/Kick
+++ b/samples/Kick
--- a/samples/Kick
+++ b/samples/Kick
--- a/samples/Kick
+++ b/samples/Kick
--- a/samples/Kick
+++ b/samples/Kick
--- a/samples/Kick
+++ b/samples/Kick
--- a/samples/Kick
+++ b/samples/Kick
--- a/samples/Kick
+++ b/samples/Kick
--- a/samples/Kick
+++ b/samples/Kick
--- a/samples/Mace.wav
+++ b/samples/Mace.wav
--- a/samples/Machine.wav
+++ b/samples/Machine.wav
--- a/samples/Open
+++ b/samples/Open
--- a/samples/Open
+++ b/samples/Open
--- a/samples/Open
+++ b/samples/Open
--- a/samples/Open
+++ b/samples/Open
--- a/samples/Open
+++ b/samples/Open
--- a/samples/Open
+++ b/samples/Open
--- a/samples/Pacific.wav
+++ b/samples/Pacific.wav
--- a/samples/Pie.wav
+++ b/samples/Pie.wav
--- a/samples/RIDE
+++ b/samples/RIDE
--- a/samples/RIDE
+++ b/samples/RIDE
--- a/samples/RIDE
+++ b/samples/RIDE
--- a/samples/RIDE
+++ b/samples/RIDE
--- a/samples/Regret.wav
+++ b/samples/Regret.wav
--- a/samples/Reverse
+++ b/samples/Reverse
--- a/samples/Reverse
+++ b/samples/Reverse
--- a/samples/Scrape.wav
+++ b/samples/Scrape.wav
--- a/samples/Shank.wav
+++ b/samples/Shank.wav
--- a/samples/Snare
+++ b/samples/Snare
--- a/samples/Snare
+++ b/samples/Snare
--- a/samples/Snare
+++ b/samples/Snare
--- a/samples/Snare
+++ b/samples/Snare
--- a/samples/Snare
+++ b/samples/Snare
--- a/samples/Woosh.wav
+++ b/samples/Woosh.wav
--- a/samples/fx
+++ b/samples/fx
--- a/samples/fx
+++ b/samples/fx
--- a/samples/jrev.wav
+++ b/samples/jrev.wav
--- a/samples/revent.wav
+++ b/samples/revent.wav
--- a/samples/snare
+++ b/samples/snare
--- a/samples/snare
+++ b/samples/snare
--- a/samples/snare
+++ b/samples/snare
--- a/scanlib.sc
+++ b/scanlib.sc
@ -0,0 +1,40 @@
+// This is the script I used to batch analyse a directory of audio samples.
+
+// It scans a directory, analyses each suitable audio
+// sample found and stores the results in the environment variable
+// ~output.
+
+// This output should be saved in a file called "data.sc" in the root directory.
+
+// At present sound samples are limited to 1 second in length..
+
+
+// TODO improve this system!
+
+
+(
+var maxFrames = 44100;
+var path      = Document.current.dir ++ "/samples/".standardizePath; // edit to your path
+var files     = (path ++ "*.wav").pathMatch;  
+~output       = (); 
+
+Routine {
+  files.do { |fname|
+    var len;
+  
+    try {
+      Post << "Processing " << fname << $\n;
+
+      Beat.newFromPath(fname, s) { |beat|
+        beat.analyse { |beat| 
+          ~output[fname] = beat.features;
+        };
+      };    
+    } { |error|
+      error.errorString.postln;
+    };
+    
+    1.wait
+  };  
+}.play;  
+)
--- a/1
+++ b/1
@ -0,0 +1 @@
+the included sounds come from the public domain "Alex Calver Sample Pack"
--- a/src/RFWGens.cpp
+++ b/src/RFWGens.cpp
@ -0,0 +1,85 @@
+/*
+	SuperCollider real time audio synthesis system
+    Copyright (c) 2002 James McCartney. All rights reserved.
+	http://www.audiosynth.com
+ 
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+ 
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ GNU General Public License for more details.
+ 
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+//ACMC demo UGen
+
+#include "SC_PlugIn.h"
+
+static InterfaceTable *ft; 
+
+struct AverageOutput : public Unit  {
+    float average, prev_trig;
+    uint32 count;
+};
+
+extern "C" {  
+	void AverageOutput_next(AverageOutput *unit, int inNumSamples);
+	void AverageOutput_Ctor(AverageOutput* unit);
+	void AverageOutput_Dtor(AverageOutput* unit);
+}
+
+
+void AverageOutput_Ctor( AverageOutput* unit ) {
+    unit->average = 0.;
+    unit->count = 0;
+    unit->prev_trig = 0.;
+	
+	RGen& rgen = *unit->mParent->mRGen;
+	
+	SETCALC(AverageOutput_next);
+}
+
+void AverageOutput_Dtor(AverageOutput *unit) {
+    // nothing to do here
+}
+
+void AverageOutput_next( AverageOutput *unit, int inNumSamples ) {
+    int i;
+    float *in = IN(0);
+    float *out = ZOUT(0);
+    float trig = ZIN0(1);
+    float prev_trig = unit->prev_trig;
+    double average = unit->average;
+    uint32 count = unit->count;
+    
+    if(prev_trig <= 0. && trig > 0.) {
+        average = 0.;
+        count = 0;
+    }
+    		
+	for (i=0; i<inNumSamples; ++i) {
+        average = ((count * average) + *(in+i)) / ++count;
+        ZXP(out) = average;
+	}
+    
+    unit->prev_trig = trig;
+	  unit->count = count;
+    unit->average = average;
+}	
+
+extern "C" void load(InterfaceTable *inTable) {
+	
+	ft = inTable;
+	
+	DefineDtorUnit(AverageOutput);
+	
+}
+
+
--- a/src/install.sh
+++ b/src/install.sh
@ -0,0 +1 @@
+cp /Applications/SuperCollider3/build/plugins/RFWGens.scx /l/cm2/coursework/task3/plugins
--- a/synthdefs.sc
+++ b/synthdefs.sc
@ -0,0 +1,47 @@
+SynthDef(\beatboxlistener) { |out=0, in=0, amp=1.0, threshold=0.3, lag=0.1, t_resetRecord=0.0, fftbuf, recbuf|
+  var input, chain, onsets, peak;
+
+  input   = SoundIn.ar(in);
+  chain   = FFT(fftbuf, input);
+  onsets  = Onsets.kr(chain, threshold, \rcomplex);
+  peak    = PeakFollower.ar(input, 0.01).lag(lag);  
+
+  RecordBuf.ar(input, bufnum: recbuf, trigger: t_resetRecord); 
+
+  SendTrig.kr(onsets, value: 1);
+  SendTrig.ar((peak < 0.0002), value: 2);
+  
+  Out.ar(out, input * amp);
+}.load(s);
+
+// TODO Envelope recognition? This is pretty good at selecting timbres but often the envelopes
+// of the two sounds (perceptually just as important??) are very different.
+SynthDef(\beatboxanalyzer) { |out=0, fftbuf, bufnum, cbus1, cbus2, cbus3, t_reset=0.0|
+  var sig, inbuf, chain, coeffs, centroid, zcr;
+  
+  sig       = PlayBuf.ar(numChannels: 1, bufnum:bufnum);
+  chain     = FFT(fftbuf, sig, wintype: 1); // Hann windowing
+  coeffs    = MFCC.kr(chain, 20);
+  centroid  = SpecCentroid.kr(chain).linlin(100, 10000, 0, 1.5, \minmax); // perhaps a slight weighting
+  zcr       = ZeroCrossing.ar(sig).linlin(100, 10000, 0, 1.5, \minmax); // towards these two
+  
+  Out.kr(cbus1, AverageOutput.kr(coeffs, trig: t_reset));
+  Out.kr(cbus2, AverageOutput.kr(centroid, trig: t_reset));
+  Out.kr(cbus3, A2K.kr(AverageOutput.kr(zcr, trig: t_reset)));
+}.load(s);
+
+
+SynthDef(\beatboxplayer) { |out=0, bufnum1, bufnum2, crossfade=0.0, mul=1.0|
+  var p1    = PlayBuf.ar(numChannels: 1, loop: 0, bufnum: bufnum1);
+  var p2    = PlayBuf.ar(numChannels: 1, loop: 0, bufnum: bufnum2);
+  var amp1  = 1 - crossfade;
+  var amp2  = crossfade;
+  var dur   = BufDur.kr(bufnum1);
+  var env   = EnvGen.kr(Env([1,1,0], [dur * 0.9, dur]));
+
+  Out.ar(out,
+    mul * Pan2.ar(
+      (((p1 * 0.5) * (env * amp1)) + ((p2 * 0.5) * (env * amp2)));
+    )
+  );
+}.load(s);
				`@ -0,0 +1 @@`
				`the included sounds come from the public domain "Alex Calver Sample Pack"`
				`@ -0,0 +1 @@`
				`cp /Applications/SuperCollider3/build/plugins/RFWGens.scx /l/cm2/coursework/task3/plugins`