linuxaudio.org

Hi,
As you may know there exists a cross-platform graphics library called SDL.

It is mainly used for games, but it is excellent for normal app's also.

Some time ago I wrote a GUI toolkit on top of SDL, called SDL-widgets.

It is far from complete, because I focussed on 2 example audio applications,

that might also be of interest for visitors of this newsgroup.
The first example app is called make-waves. It can:

- draw waveforms to the screen, modulate them by each other, you can listen

   to the result,

- draw a physical model of a string or a spring that you can listen to and

   animate with the mouse,

- draw and edit the harmonic spectrum of a sound,

- display the frequency curve of digital filters, that you also can plug in

   yourself.
The 2nd example app, wav2spectrum, can read a wave file and perform FFT

analysis on it. You can scroll through the cached waveform chunks and FFT

spectra easily.
I tried to document the toolkit and the examples fairly well, so maybe

they have some use for others as well. You can get it from:
   http://members.chello.nl/w.boeke/SDL-widgets/index.html
Kind regards,

Wouter Boeke

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