Program sfsignal | Generate signal series 
[SYNOPSIS]
sfsignal > out.rsf para= n=100 o=0.0 d=0.004 waveform=
[PARAMETERS]
float   | d | =0.004 |   | 	interval 
int     | n | =100 |   | 	length 
float   | o | =0.0 |   | 	original 
floats  | para | = |   | 	 [4]
string  | waveform | = |   | 	waveform: ricker,sinc,harmonic,randn,rand 
[DIRECTORY]
user/chen
