GFFT    1.12    FFT spectrum analysis of sample files

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.

Author: Charles P. Peterson
Path: misc/GFFT-1.12.lha