This demo facilitates the generation and analysis of a noise-corrupted test signal.  The demo tries to set up the default D/A output according to whathardware is available.  You can change this default by right-mousingthe "Setup Output" button.When the button "Generate New Test Signal" is pressed, you will be prompted for parameters that specify the test signal and additive noise.  The signal plus noise will then be displayed in xwaves+, together with corresponding spectrum analyzer and spectrogram displays.  Besides xwaves+, the following ESPS programs are used behind thescenes: mbuttons (for the "Test Signal Control" panel), xtext (fordisplaying text output like this), xprompt (for the parameterprompting), testsd (for generating the test signal and noise), addsd(for creating the signal + noise), and send_xwaves (for sendingdisplay commands to xwaves+).@(#)README	1.3 1/18/93 ERL