VFFTFILTER

Section: User Commands (1)
Updated: March 10, 1992
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NAME

vfftfilter - circular low and high pass filter for VFFT  

SYNOPSIS


vfftfilter     [-hi] [-base #] [-c] [-fe #] [-func #] [-F #] [-G] [-L]
               [min #] [-r #] [-R #] [-v] [<] VFFT [> | -o] filtered-VFFT
 

DESCRIPTION

 

OPTIONS

-base #
base value. [Default=0.0], the good maximum value is 2.0
-c
convex curve. Default is concave curve.
-hi
high-pass filter. Default is low-pass.
-fe #
elastic scale factor
-func #
filter functions:
default:       elastic
1              ideal
2              exponential
3              butterworth
4              right tri-angle
5              user defined standard table
6 table_name   user defined table (ascii format)
7 table_name   user defined table (binary format)

               Format of user defined table (ascii):

               (1st int) table_length0.8 1 0.5 0.1 0 0.7 ... (last #)

               short format: if you want generate table like this

               200 0.3 .5 .7 .9 .6 .4 .6 1.0 ... 1.0 (total 193 1.0s)

               then short format is:8 .3 .5 .7 .9 .6 .4 .6 1.0

               The first element in the table is the highest frequency filter,
               and the last element is the lowest frequency one.
-F #
number of Frames in sample [1 in 2D]. more F # is 3D.
-G
generate gnu-plot data of curves only.
-L
Linear filter.
-min #
minimum value at bottom [default = 0.01].
-power #
power number. The default is 2.
-r #
radius [default = 0.333].
-R #
radius factor. default is 1 (100%). Range 0.1 - 1.0
-v
verbose
 

SEE ALSO

vfft(1), vfftpass(1), inv-vfft(1), dcvtob(1), tuner(1)  

AUTHOR

Jin Guojun - 5/15/91


 

Index

NAME
SYNOPSIS
DESCRIPTION
OPTIONS
SEE ALSO
AUTHOR

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