, to remove zipper noise.</div><div class="line">    A bit contrived and probably less efficient than just</div><div class="line">    using an audio-rate tremelo oscillator, but hey it&#39;s a demo!</div><div class="line"></div><div class="line">    Circuit: Audio output on digital pin 9 on a Uno or similar, or</div><div class="line">    DAC/A14 on Teensy 3.1, or</div><div class="line">    check the README or http://sensorium.github.com/Mozzi/</div><div class="line"></div><div class="line">        Mozzi doc