NAME

 Txdec


DESCRIPTION

  TX domain noise removal, 2- or 3-D


SYNOPSIS

  Txdec < in.H > out.H


INPUT PARAMETERS

w1,w2,w3 - integer
                             window sizes in samples to calculate the
                             noise filters in.  The noise and signal should
                             be stationary within these windows.
=item   k1,k2,k3  - integer
                             number of windows
a1,a2,a3 - integer
                             PEF sizes (time,along w2,along w3)
lag1,lag2,- integer
                             Filter lags (time,along w2,along w3)
lag3
lambda - real
                              stabilization factor
   defaults
          a1=5,a2=2,a3=1     In-line or 2-D PEFs only.
                             For a 3-D PEF, use something like a2=2,a3=2.
                             Be warned, as the number of filter coefficients
                             increases, the run time increases by about
                             the cube of the number of filter coefficients.
          w1=min(n1,20)
          w2=min(n2,20)
          w2=min(n3,6)
          k1= 1.5 * n1/(w1-a1+1.)
          k2= 1.5 * n2/(w2-a2+1.)
          k3= 1.5 * n3/(w3-a3+1.)
          lag1 = (a1/2)+1
          if a3 is 1, then lag2 =(a2/2)+1,  else  lag2 = 1
          lag3=1
 Author- Ray Abma, 1995