Task関数の書き換え

replaced.coffee

Task.do ->
  [s1] = []
  [
    =>
      s1 = def.play()
      @wait 100
    =>
      s1.set freq:220
      @wait 200
    =>
      @wait Task.each [1,2,3,4], ->
        [s2] = [] # ここに s1 を含めてはいけない
        [
          (i)=>
            s2 = def.play(freq:220*i)
            @wait 50
          (i)=>
            s1 = def.play(freq:440*i)
            @wait 100
        ]
      .play()
  ]
.play()

task.coffee

Task.do ->
  s1 = def.play()
  @wait 100
  s1.set freq:220
  @wait 200
  @wait Task.each [1,2,3,4], (i)->
    s2 = def.play(freq:220*i) # これはローカルスコープ
    @wait 50
    s1 = def.plau(freq:440*i) # これは上のスコープ
    @wait 100
  .play()
.play()