Remove the concept of a register/processor.

package.json

@@ -1,6 +1,6 @@
 {
   "name": "goertzeljs",
-  "version": "2.0.0",
+  "version": "3.0.0",
   "description": "A pure JavaScript implementation of the Goertzel algorithm.",
   "main": "build/goertzel.js",
   "scripts": {
@@ -29,6 +29,7 @@
     "coffee-script": "^1.10.0",
     "finalhandler": "^0.4.1",
     "jasmine": "^2.4.1",
+    "jasmine-expect": "^2.0.2",
     "jasmine-node": "^1.14.5",
     "serve-static": "^1.10.2"
   }

src/dtmf.coffee

@@ -62,14 +62,6 @@ class DTMF
       return @frequencyTable[lowFrequency][highFrequency] or null
     return
 
-  floatBufferToInt: (floatBuffer) ->
-    intBuffer = []
-    i = 0
-    while i < floatBuffer.length
-      intBuffer.push Goertzel.Utilities.floatToIntSample(floatBuffer[i])
-      i++
-    intBuffer
-
   processBuffer: (buffer) ->
     value = ''
     intSample = undefined
@@ -79,6 +71,7 @@ class DTMF
     highEnergies = []
     lowEnergies = []
     frequency = undefined
+    result = []
     # Downsample by choosing every Nth sample.
     i = 0
     while i < buffer.length
@@ -104,13 +97,18 @@ class DTMF
       if value == @firstPreviousValue and value != undefined
         @repeatCounter += 1
         if @repeatCounter == @repeatMin
+          result.push value
           for handler in @decodeHandlers
             setTimeout handler(value), 0
       else
         @repeatCounter = 0
         @firstPreviousValue = value
     @goertzel.refresh()
+    result
 
   on: (eventName, handler) ->
     switch eventName
-      when "decode" then @decodeHandlers.push(handler)
+      when "decode" then @decodeHandlers.push(handler)
+
+
+module.exports = DTMF if module?.exports

src/goertzel.coffee

@@ -5,7 +5,7 @@ class Goertzel
     @frequencies    = options.frequencies
     @refresh()
 
-  refresh: () ->
+  refresh: ->
     ## Re-initializes Goertzel when we are taking in a new buffer
     @[attr] = {} for attr in ['firstPrevious', 'secondPrevious', 'totalPower', 'filterLength', 'energies']
     @_initializeCoefficients(@frequencies) unless @coefficient
@@ -18,12 +18,6 @@ class Goertzel
       @_getEnergyOfFrequency sample, frequency
     @ # returning self would be most useful here
 
-  max: ->
-    max = undefined
-    for frequency in @frequencies
-      if max == undefined
-        max = {frequency: frequency, energy: @energies[frequency]}
-
   ## private
   _getEnergyOfFrequency: (sample, frequency) ->
     ## Main algorithm
@@ -115,4 +109,12 @@ class Goertzel
         i++
       buffer
 
+    floatBufferToInt: (floatBuffer) ->
+      intBuffer = []
+      i = 0
+      while i < floatBuffer.length
+        intBuffer.push Goertzel.Utilities.floatToIntSample(floatBuffer[i])
+        i++
+      intBuffer
+
 module.exports = Goertzel if module?.exports