MATRIXSYNTH: Leploop groove box



Tuesday, August 16, 2022

Leploop groove box


video upload by NOISEBUG

https://www.noisebug.net/products/lep-leploop-v3

"LEPLOOP was designed to be a minimalist electronic music live-performance groove-box, which can be used to create a variety of electronic musical styles. Small in nature but aggressive in sound, the user will be able to create a variety of analog timbres and beats. We are happy to present the third series after ten years of production, with some update:

Panel and Box design with Italian design studio IOSAGHINI

General PCB Redesign

New Metal Shaft Potentiometer

New 15v Dc Power Supply

On\Off Power Switch

Envelope 1\2 Gate in\out Connectors

Envelope 1 release CV controllable with LFO or Sequencer

VCA 1\2 Linear \ Exponential Switch

LFO rate CV In

The LEPLOOP can be synched via MIDI to another LEPLOOP for tempo-synched operation or to another MIDI device or sequencer to receive sequence stop & start instructions.

LEPLOOP TECNICAL INFO
1 OSCILLATOR (VCO1) TRIANGULAR/SQUARE WAVE
1 OSCILLATOR (VCO2) SAWTOOTH WAVE WITH RING MODULATOR AND FM MODULATION
WHITE NOISE GENERATOR
24 dB/OCT DIODE LOW PASS FILTER
KICK DRUM WITH DISTORSION AND TRIGGER MIXER
2 VCA’S
2 AR ENVELOPE GENERATORS
1 LFO
16 CAPACITORS ANALOG SEQUENCER PWM PROGRAMMABLE
4 TRACK DIGITAL RHYTHM SEQUENCER 64 STEP EACH TRACK
4 CHANNEL AUDIO MIXER
MIDI INPUT (CLOCK AND NOTES)
5 CV OUT: S&H, SEQ, LFO,ENV1,ENV2
3 GATE OUT: S&H, SEQ, CASSA
2 GATE IN : ENV1, ENV2
4 CV IN: VCO1, VCO2, VCF CUTOFF, LFO RATE
1 AUDIO IN (VCF)
4 AUDIO OUT: MIXER, CASSA, VCO2, VCO MIX
1 CLOCK OUTPUT: CLOCK 24, MINI JACK MIDI START\STOP TYPEC TS MONO
EEPROM MEMORY, 16 BANKS, 10 PATTERN EACH, 160 PATTERN TOTAL
15V DC, 500 MA, TIP + CENTRAL ,POWER SUPPLY
MIXER

The 4 audio signals CASSA, VCA2, VCA2, VCF are mixed and sent to MIX output. The Bass Drum (CASSA) has it’s own dedicated output,
when connected the CASSA volume knobs remain active for the MIX output.

RHYTHM SEQUENCE

There are four rhythm instruments and one capacitor analog sequencer.
4 small red LEDs for track playing or analog sequencer mode.
16 Led’s bar shows rhythm sequencer and other informations.
The maximum length for the analog sequencer is 16 notes.

This is a true analog sequencer becausennotes are stored into 16 capacitors switchednby analog multiplexer.

THE ANALOG SEQUENCER

This is a true analog sequencer becausennotes are stored into 16 capacitors switchednby analog multiplexer.

As the capacitors are subject to discharge, the note pitches will slowly decrease. It’s not possible to store the note value in memory.

Thusly, the LEPLOOP has a 16-step analog recorder, much like an analog delay.

Over time, as the analog sequencer cycles through its pattern, the signal will degrade and the sound will change. This is because the capacitor can only store the signal for a limited amount of time.


The analog sequencer is digitally controlled tempo-wise, and will work in conjunction with the digital track sequencer.

MIDI IMPLEMENTATION

When you turn on the LEPLOOP, default is midi channel 16 for percussive instruments and channel 1 for midi notes, LEPLOOP use two midi channels: the first accepts notes for percussive instruments (4 coloured LEDs), the second is used to play PWM notes.

https://www.noisebug.net/products/lep..."

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