discoDSP OPL v3.2.0 is an FM synthesizer for Windows based on the YMF262 (OPL3) chip. Classic patches use dual-operator channels, like those found in AdLib and Sound Blaster games, while multi-operator patches use dual-operator channel pairs. The eight-chip set with 144 channels allows for larger patches and unison chords.
Operator Features
Each operator has its own waveform, frequency multiplier, ADSR envelope, decay, key scaling, and velocity response. Eight waveforms for each operator include sine, half sine, absolute sine, quarter sine, alternating sine, camel sine, square, and logarithmic sawtooth. It is the combination of waveforms that makes the OPL what it is, because sine alone is not enough.
Multi-Operator Mode
Multi-operator mode allows for up to four modulators and four carriers per note. Choose from eight algorithms including FM, Additive, 3-Stack, 4-Stack, Two-Pair, Stack plus Sine, 1-3, and Three-Pair. You can also create your own using the Yamaha-style algorithm diagram. Drag a modulator to connect it to others, click a wire to remove it, and click an operator to edit it. Each patch is compiled into chip channels with 2 and 4 operators. Multi-operator instruments are saved in the .sbix format, which other instruments still recognize as standard SBI.
Massive Instrument Library
The suite includes over 11,000 instruments: an SBI library sorted by category, 4-op and OPL3 banks created for computer games, General MIDI sets from classic game soundtracks, and Yamaha TX81Z voices. WOPL and WOPLX banks, OPLI instruments, and TX81Z, DX21, DX27, and DX100 sysex dumps are loaded without conversion, and levels are normalized so that 4-op patches correspond to 2-op ones. SBI presets are loaded via drag and drop.
Drums Mode
Drums mode adds bass drum, snare drum, tom-tom, cymbal, and hi-hat, each assigned to specific operator slots and waveforms.
Unison and Output
In AN1x-style unison, each note is layered with five detuned layers with a 32-step detune depth and stereo spacing, while pitch panning distributes notes across the stereo field based on pitch. The output features a master volume control from -48 to +12 dB and a Valve or Tape saturator that processes only peaks. MPE, sustain pedal, and sample-accurate MIDI are supported.
Emulation Engine
The emulation runs on a rewritten engine with original developments. The chip itself is oversampled 16x, eliminating aliasing that occurs with FM synthesis at high modulation settings, while pitch, envelope sync, and key scaling are adjusted so that patches sound consistent across all settings. Offline reverb uses a linear-phase filter with the specified delay, ensuring rendering matches what you have heard. Inactive chips and channels are skipped, so CPU load depends on the audio being played.
Key Features
Based on the YMF262 OPL3 chip
Eight waveforms per operator
Up to four modulators and four carriers per note
Eight algorithms plus custom algorithm creation
Over 11,000 instruments included
WOPL, WOPLX, OPLI, TX81Z, DX21, DX27, and DX100 support
Drums mode with bass drum, snare, tom-tom, cymbal, and hi-hat
AN1x-style unison with five detuned layers
16x oversampled chip emulation
MPE, sustain pedal, and sample-accurate MIDI support
VSTi, VSTi3, AAX formats for Windows
Format and Compatibility
Formats: VSTi, VSTi3, AAX for Windows.
Compatible with major DAWs including Ableton Live, Cubase, Pro Tools, FL Studio, Studio One, Reaper, and Bitwig.
File Size: 34.3 MB
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