Version 1.5.6:

- bug-fix: Sound release now works as desired and some other minor fixes.
- overall runtime improvement. On my system I noticed up to about 30 percent
  less CPU usage.
- added some new instrument settings to the "test" folder.

Version 1.5.5:

- Over all improvement of tuning. The string synth is now "well tempered" 
  over the full range of notes. The frequency error is less than 0.005 percent
  compared to the theoretical value of a sinus wave, with the assumption that 
  the sound is played exactly at 44100 samples per second (a = 440Hz). 
- Removed "oversampling" mode to save CPU time.
- Extended filter envelope attack speed to allow slower attack. A attack 
  speed value of 1 will start the envelope from maximum now
  (attack time = 0).  
- Enabled pipe input mode again. In this mode real time scheduling
  is NOT possible (linux bug). Conservative "renice(-11)" is used instead. 
  To have "clean" audio output in this mode you should not run RTSynth together
  with other periodic driven programs like xosview or network services. I have
  tested this mode with Simon's "midikb" application (www.sdf.se/~simon/).
  	The following standard syntax is used:
		'RTSynth <MidiInput'
  	where MidiInput is a device or a named pipe (FIFO).
  	Reading from stdin is managed in the usual way:
     	  	e.g. 'cat /dev/midi | RTSynth'	
	The default input device is "/dev/midi00".
- Rebuild with fltk-19981108.
- Fixed audio buffer length.

Version 1.5.4:
	
- added "metal" to additional wave in string synth.
- the audio buffer size is configure able. A larger audio buffer
  may reduce the CPU peak load.
	
Version 1.5.3:

- RTSynth now uses the real time scheduler available since linux 
  version 2.0.x. No more interrupted audio output!
- bug-fix: Fixed audio fragment size in stereo mode.
- bug-fix: string synth: fixed energy dissipation filter for order > 1. 
  Try out the new synth settings in test/.
- Reading midi events from stdin or pipe may block the system ->
  feature dissabled.
- added "piano" and "piano2" to additional wave in string synth. 
  This ones take care of the geometric position of the piano 
  hammer -> suppressing of the great second. Examples: test/Epiano-new*.pst 
- added amplitude LFO to string synth.  
- added scale-able bore size to flute synth for more unnatural 
  (synthetic) sounds. Still very simple models with cylindric 
  bore.
	
Version 1.5.2:

- added main panel.
- added flute synths based on "base clarinet" and "base flute".
  Embrochure-size,-feedback and feedback filterorder are
  only active in "flute" mode.	
- added "soft damping" mode to string synth. The setting "off delay"
  is ignored in this mode and "off-damping" is the final damping value. 
- added oversampling mode to string synth.
- next version hopefully implements full midi ctrl of all
  parameters...
	
Version 1.5.1:

- bug-fix: midi note to frequency translation fixed. 
- simple vu meter added.
- modulation mode for universal filter added.
- code for "volume #7", "pan #10" and "hold pedal #64" midi 
  controller added. "hold pedal" is only in 24 voice mode active.
- added 24 voice mode for active midi controller #64 support.
- added 4-pol (24dB) low pass output filter to string synth.
- icons for WindowMaker added.
- minor performance improvements to minimise 
  the CPU peak load.
- added test directory with simple examples (settings 
  and midi files).
- added support to read midi events from stdin (pipe).
  only tested: "cat /dev/midi00  | ./RTSynth"