SYNOPSIS

PERL PROGRAM NAME:

AUTHOR: Juan Lorenzo (Perl module only)

DATE:

DESCRIPTION:

Version:

USE

NOTES

Examples

SYNOPSIS

SEISMIC UNIX NOTES SUTVBAND - time-variant bandpass filter (sine-squared taper)

sutvband <stdin >stdout tf= f=			        



Required parameters:                                          

      dt = (from header)      time sampling interval (sec)    

      tf=             times for which f-vector is specified   

      f=f1,f2,f3,f4   Corner frequencies corresponding to the 

                      times in tf. Specify as many f= as      

                      there are entries in tf.                



The filters are applied in frequency domain.                  



Example:                                                      

sutvband <data tf=.2,1.5 f=10,12.5,40,50 f=10,12.5,30,40 | ...



Credits:

     CWP: Jack, Ken



Trace header fields accessed:  ns, dt, delrt

User's notes (Juan Lorenzo) untested

CHANGES and their DATES

Import packages

instantiation of packages

Encapsulated hash of private variables

sub Step

collects switches and assembles bash instructions by adding the program name

sub note

collects switches and assembles bash instructions by adding the program name

sub clear

sub dt

sub f

sub tf

sub get_max_index

max index = number of input variables -1