RecordBufWrapBehaviour.scala

val b = Buffer(s)
b.alloc(numFrames = 44100 * 10)
b.zero()

play {
  val sig = PlayBuf.ar(numChannels = 1, buf = b.id, loop = 1)
  // val in = WhiteNoise.ar(0.1)
  val in = SinOsc.ar(XLine.kr(400, 1000, 10)) * 0.1
  RecordBuf.ar(in = in, buf = b.id, offset = 44100 * 5, loop = 1)
  val ref = SinOsc.ar(1000) * 0.1
  Out.ar(0, Seq(sig, ref))
}