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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