Audiosim (software synthesizer)

AudioSim is a virtual analog software synthesizer. It was released in 1996 by the German-Hungarian software company Audio Simulation. It was first available for DOS and supported SoundBlaster or Gravis Ultrasound Sound cards.

Description
AudioSim contains 2 oscillators, 4 envelope generators, 2 LFOs and a self oscillating multimode filter. The parameters of the different modules are adjustable in real-time via the GUI using the mouse. The program also has MIDI support for Gravis Ultrasound and SoundBlaster cards.

Version 2.0

 * MIDI support for Sound Blaster cards
 * Additional MIDI card support for use when using a buggy Sound Blaster MIDI
 * Additional SINE waveform & PORTAMENTO to achieve more vintage sound
 * Ring modulator usable parallel with synchronization and FM modulation
 * Echo FX engine with delay & decay time