MFOS Soundlab Mini synth plus Midi

Soundlab Minisynth Plus+

This project is a reprise of the Sound Lab Mini-Synth with the addition of a Sample and Hold and several circuit and component value changes to improve performance. Even if you have already ear a Sound Lab I would recommend this as a completely new project.New design and a new MIDI INTERFACE onboard.
You can play your SLMS+ with a midi keyboard or midi controller.

Architecture

Type: Analog

Synthesis: Subtractive

Oscillators

Oscillators: 2

Waveforms: Pulse, Pulse Variable, Saw Down, Square

Osc Modulation: Envelope, Input, Knob, LFO, Sync Hard

Envelope

Envelopes: 1
Evelope Paramerters: Attack, Decay, Looping

Filters

Filters: 1

Types: 12dB Slope (2-pole), Low Pass, Resonance

Filter Modulation: Envelope, Knob, LFO, S&H

LFO

Lfo: 1

LFO Parameters: Saw Up, Saw Down, Square, Triangle

Sample & Hold Addon

- variable sample rate
- output voltage glide
- switch to select source to be modulate

Midi interface Addon

Midi cannel: 1 (not exchangeable)

Midi port: MIDI IN, MIDI THRU
Control change: pitch bend, modulation , portamento (CC 5) 

1V/Oct: 5 octaves 

IMPORTANT: POWER ON SOUNDLAB WHEN YOUR MIDI SEQUENCER IS IN STOP MODE!

MICROCONTROLLER CAN GENERATE MIDI SIGNAL ERROR IF YOUR SEQUENCER IS IN PLAY MODE.

Polyphony & Tuning

Polyphony: 1

Timbrality: 1

Tuning: Standard

Modes: Mono

Case

Case: Desktop

Controls: Knobs, Switches, Buttons

Display Type: LED

Dimension: 27 x 16 x 7 (cm)

Material: Plexiglass

Front panel: Aluminum (1mm thick)

ConnectionsAudio Output Connections: 1/4" Phone Jack, Mono Out

Power: 9V power supply 300 mA (euro)

Audio Output Count: 1

Control voltage:  2 - 1V/Oct (1/4" Phone Jack/3,5 mini jack)

Gate in: 1  (1/4" Phone Jack/3,5 mini jack)