  <p>
        The <code>DSP-SEQ</code> defines a sequence of DSP's by using the
        <code>STOP-HOOK</code> of the functions defined by DSP!. The last
        argument is an arbitrary form useful to define recursive sequences.
        For example:
      </p>

      <pre class="src src-lisp">(<span style="color: #8deeee;">defvar</span> <span style="color: #eedd82;">env2</span> (make-perc .001 .4))

(<span style="color: #8deeee;">dsp!</span> <span style="color: #87cefa;">env-test-3</span> (freq amp pos (en