ut of hFunc should also have type single.

 &quot;shrink&quot; (which should be an integer) determines the amount to subsample
 the computed channels (in applications such as detection subsamping does
 not affect performance). The params for each channel type are described
 in detail in the respective function. In addition, each channel type has
 a param &quot;enabled&quot; that determines if the channel is computed. If
 chnsCompute() is called with no inputs, the output is the complete
 default params (pCh