
	     XAnalyser - A frequence spectrum analyser for X Window
			      Version " VERSION "

		   Copyright (c) 1998-2006 by Arvin Schnell



Source:

  The source is either the soundcard or a diskfile. The name of the diskfile
  can only be specified on the commandline.


Frequency Spectrum:

  The frequency analyser showes the frequency spectrum of the source, either
  separately for both channels or together.

  The sampled data are windowed with a gaussian exponential function. This
  function has a single parameter called alpha. A small value gives very sharp
  peaks but also much noise over a wide frequence range. A bigger value
  reduces this noise but also makes the peaks wider. You can best study the
  effect with a sine wave (e.g. audio test CD).

XY Scope:

  Roughly speaking the XY scope draws a plots where the left channel is used
  for the x axis and the right channel for the y axis. Thus a audio signal
  only present on the left channel produces a horizontal line, whereas a audio
  signal only present on the right channel produces a vertical line.

  This is very useful to check if a signal is mono or stereo. A mono signal
  procedures a thin line from the left bottom to the right top. A stereo
  signal gives a very wide line or even fills the entire scope. (Just check it
  out.)

Copyright:

This program is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free Software
Foundation; either version 2 of the License, or (at your option) any later
version.

This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with
this program; if not, write to the Free Software Foundation, Inc., 675 Mass
Ave, Cambridge, MA 02139, USA.

