functions" class="code">function [X, f_c] = ToolGammatoneFb(afAudioData, f_s, iNumBands, f_low)</a>
0013     
0014     <span class="keyword">if</span> (nargin &lt; 4)
0015         f_low = 100;
0016     <span class="keyword">end</span>
0017     <span class="keyword">if</span> (nargin &lt; 3)
0018         iNumBands = 20;
0019     <span class="keyword">end</span>
0020         
0021     <span class="comment">%initialization</span>
0022     fEarQ   = 9.26449;                
0023     fBW     = 24.7;
0024     iOr