</span>

<span class="sd">        b_{n+1} = b_{n} + \\mu e_{n} x_{n}^{*}</span>

<span class="sd">**Example**</span>

<span class="sd">    .. code-block:: python</span>

<span class="sd">        from diamondback import ComplexExponentialFilter</span>
<span class="sd">        import numpy</span>

<span class="sd">        x = numpy.linspace(0.0, 0.1, 128)</span>
<span class="sd">        d = ComplexExponentialFilter(0.0).filter(x)</span>
<span class="sd">        complex_frequency_filter = ComplexFrequencyFilte