<Audio 

  version="1.0" 

  timeUnit="ms" 

  gain="0dB"

  controls="false"

  transitionTime="10">

  <var name="f" 

       value="$deviceMotionRotationRateGamma" 

       mapin="-1000,0,1000" 

       mapout="1000,250,1000" />

  <var name="g" 

       value="$deviceMotionRotationRateGamma" 

       mapin="-500,-5,5,500" 

       mapout="1,0,0,1"/>

  <Noise output="next"/>

  <BiquadFilterNode type="bandpass" Q="2" frequency="$f" output="next"/>

  <GainNode gain="$g"/>

</Audio>

​