<pre class="comment">computes a gammatone filterbank
&gt; see function MakeERBFilters.m from Slaneys Auditory Toolbox
&gt;
&gt; @param afAudioData: time domain sample data, dimension channels X samples
&gt; @param f_s: sample rate of audio data
&gt; @param iNumBands: number of filter bands
&gt; @param f_low: start frequency
&gt;
&gt; @retval X filtered signal (dimension bands X samples)
&gt; @retval f_c filterbank mid frequencies
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