Title:			FFTGRAPH
Author:			Daniel Aronovitch (pdelcham@ulb.ac.be)
Version:		1.00
Title From:		Documentation
Author From:		Documentation
Version From:		Documentation
Supplier:		Daniel Aronovitch (pdelcham@ulb.ac.be)
Date:			20/09/95
Keywords:		Mathematical and numerical software
Shareware:		No
Machine:		Archimedes
Operating system:	RISCOS
Memory requirements:	
Peripherals needed:	ARM 3 or later
Other s/ware needed:	RISC OS 3 or later
Directory:		micros/arch/riscos/d192
Date mounted/updated:	18/10/95
File names:		fftgraph.zip
Unarchived files:	33
Unarchived size:	259 kbytes
Omissions:		
See also:		FFT (a239)

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Acquiring the package:

Download the archive file(s) and extract using SparkPlug 2
(see the "tools_help" file in micros/arch/riscos/tools for further info).


Description:

The FFT programs perform a frequency analysis using the fast Fourier
Transform.  They expect an Armadeus formatted input file and output
graphs in Draw format.  FFT_2D outputs a two dimensional graph with
level as y-axis and frequency as x-axis.  FFT_3D option 3D outputs a
three dimensional graph with frequency along the y-axis, time along
the x-axis and level is deflection.  FFT_3D option sonograph outputs
a three dimensional graph with frequency along the y-axis, time along
the x-axis and level is black level.  C sources and an example input
file are included.

An ARM3 or later is required due to use of the SWP instruction.
A Floating Point Accelerator (FPA) is not required but would be useful.
The Desktop Development Environment (DDE) is required for the desktop
interface but the programs can be run from the command line without it.