Program sfcpef | 1-D prediction-error filter estimation from complex data 
[SYNOPSIS]
sfcpef < in.rsf > out.rsf single=y nf=
[PARAMETERS]
int     | nf | = |   | 	filter length 
bool    | single | =y |  [y/n] | 	single channel or multichannel 
[DIRECTORY]
user/fomels
