NAME

Mute - Mute a SEP77 dataset


SYNOPSIS

Mute par= < in.H > out.H


INPUT PARAMETERS

vmute - real
        [1.45]: outer mute velocity.
        0.0: Special case - Flat mute.
vfile - file
        [vmute]: vmute as a function of space.
tmute - real
        [0.0]:  start time of (hyperbolic) outer mute
tfile - file
        [tmute]: tmute as a function of space.
tramp - real
        [0.25]: linear mute time ramp in seconds.
Scale(t<Tmute)- real
        [0.0]: Scale(t>Tmute+tramp) = 1.
tpow - real
        [0]: gain trace data by  t**tpow
xpow - real
        [0]: scale offset (x) traces by (x/xmin)**xpow
trcbal - integer
        [0]: no trace balancing
    1: trace balance by sum of absolute values
          2: trace balance by rms amplitude value
          3: trace balance by trace energy (sum of squared values)
weight - real
        [0]: no weighting
          1: Jon's weight by 1/(t+xmax/vmute),
                        like dividing by the number of traces:
                        radial weight by r / ( 1. + (r*r)**2 )
                        r = r0 * x / (t * vmute)
                        r0 = sqrt( sqrt( drop - 1. ) )
drop - real
        [10.]: good till
tape - real
        [0]: no taper
          N: linear taper on the last N traces at either end of gather.
kill - integer[]
        [list]: list of trace numbers to kill
       (first trace no. is 1)
emute - real
       end of trace  ; start time for end of data mute
eramp - real
        [0.25]: ramp length at end of trace


DESCRIPTION

   Apply linear outer mute to gather + preprocess for velocity analysis


CATEGORY

seis/filter