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.name
GFFT
.type
Sound Analysis
.aminet-dir
misc/sci
.short
FFT spectrum analysis of sample files
.description
GFFT is an FFT-based spectrum analysis program with many features. By
operating from stored sample data files, it offers higher resolution
and/or accuracy than real-time analyzers. It accepts 8, 12, or 16-bit
data in in IFF 8SVX, AIFF, and AVR formats, or in unformatted files,
and can accept data points entered through a console in floating
point.\n
GFFT can be operated from either a Workbench GUI or from a CLI in
interactive or batch modes. It has built-in help facilities for all
operating modes with a 170+ Kb help file.\n
GFFT can produce high quality spectrum plots on screen, plotter, or
printer, or save to Postscript or TeX files, or output spectral data
in text form to a console or file. (GNUPLOT, a separate program by
other authors, is required for plotting features. GFFT is designed to
invoke and control GNUPLOT automatically.) It can plot in 2D
(Amplitude vs Frequency), or 3D (Amplitude vs Frequency vs Time). It
allows the selection of logarithmic X and/or Y axes, the dB scaling of
X, and arbitrary 3D rotation. GFFT can show multiple spectra in the
same plot, or append spectral data bands from earlier sessions.\n
GFFT provides 8 selectable FFT window types, including Blackman-Harris
92 dB. It can apply a special weighting for pink noise testing.
Smoothing, calibration, ranging, and quantization are also available.
There are no arbitrary limits to the number of frequency bins or
smoothing points, or to the length of data which can be analyzed.
.version
1.12
.date
1994.8.29
.author
Charles P. Peterson
.restrictions
NONE
.requirements
WB1.3 (V34) or higher and 1.5M total RAM. Will run on some systems with 1M
RAM with reduced capabilities. Recommended: WB2.0 (V37) or higher, 3M or
more RAM, and harddrive or second floppy. Also requires GNUPLOT, a
separate program by other authors. GNUPLOT V3.0 or higher is required;
GNUPLOT V3.4 or higher is required for some 3D features (only).
.distribution
GNU Public License
.address
4007 Enchanted Sun
San Antonio, TX 78244-1254 USA
.email
Charles_P_Peterson@fcircus.sat.tx.us
.exectype
68000 and 68020/68881
.source
All SAS/C source included. (395K)
.construction
SAS/C 6.51 with full optimization; both FFP and 68881 versions included
.tested
A3000 (8M, WB2.1); A500 (1M Chip, 1 floppy, WB1.3); and beta testers
.run
GFFT=WB,GFFT
GFFT=CLI,GFFT WORKBENCH
GFFT=CLI,GFFT
.docs
README
INSTALLATION
GFFT.HELP
Bugs
.described-by
Charles P. Peterson (Charles_P_Peterson@fcircus.sat.tx.us)