SSL Soleil Chip
Soleil Lo-Fi MIDI String Synth Chip
Make your own simple DIY “Lo-Fi” MIDI string synth with this cool 28-pin chip.
The Soleil is a Lo-Fi MIDI String Synth chip 28-pin DIP package, capable of playing 4 paraphonic notes with 2 oscillator ranks per note. The second rank can be detuned. Waveforms are continuously variable from sawtooth thru variable pulse widths. All sounds share a single A/R envelope.
Many parameters are controllable via 0 to 5 V CV inputs.
Soleil responds to MIDI Pitch Bend and Modulation, and has a built-in modulation / vibrato oscillator, the depth of which responds to the MIDI Mod Wheel.
MIDI Channel Assignment
Soleil’s MIDI channel defaults to Channel 1 but can be reset with a simple sequence from your MIDI keyboard.
To assign a new MIDI channel to the Soleil, first unplug / power off your Soleil and connect your powered-up MIDI keyboard, set to the desired MIDI channel. Now hold down any note, apply power to the Soleil. During the first 2 seconds while the MIDI LED is flashing, simply release the key you’re holding, which causes a MIDI NOTE OFF on the desired channel. Your Soleil is now set to your keyboard’s MIDI channel. The new setting is automatically stored in the chip’s non-volatile memory for the next time.
The audio outputs are PWM DACs (filtering required) and the chip runs standalone from a 5 volt power source.
4 note para-phonic
DSP platform: ATMEGA
Note On, Note Off, Running Status
(Due to continual product improvements, specifications are subject to change without notice.)