an><span class="identifier">h</span><span> += </span><span class="identifier">d</span><span> * </span><span class="identifier">amp</span><span>
          </span><span class="identifier">uv</span><span> = </span><span class="identifier">uv</span><span> * </span><span class="identifier">octave_m</span><span>
          </span><span class="identifier">freq</span><span> *= </span><span class="number-literal">1.9f</span><span>
          </span><span class="identifier">amp</span><span> *= </span><span class="numbe