"LILLA is a 16 voices multitimbral and multi-midi polyphonic audio sampler, based on Teensy 4.1 and equipped with 32MB flash memory for 16 bits audio samples. LILLA offers ADSR and trimming functionalities and various play modes (forward, reverse, f/r/f+r loop) and allows real-time editing during the performance without interruptions. Audio samples are uploaded using an SD-micro card (optional) ; firmware and user-guide can be downloaded from https://github.com/SandroGrassia/Lill.... I/O: midi-in, headphones (stereo), line-out (stereo); power supply: 5V / usb micro-b.
LILLA è un audio sampler polifonico a 16 voci, multitimbral e multi-midi, basato su Teensy 4.1 e dotato di 32MB di memoria flash per i sample audio (16bit). LILLA offre funzionalità ADSR e trimming, varie modalità riproduzione (forward, reverse, f/r/f+r loop) e consente l'editing real-time senza interruzione durante la performance. I sample sono caricati con una scheda micro SD (opzionale); il firmware ed il manuale d'uso sono disponibili su https://github.com/SandroGrassia/Lill.... I/O: midi-in, headphones (stereo), line-out (stereo); alimentazione: 5V da via usb micro-b."
"The Lilla midi expander is currently a prototype/hobby project. It is based on the Teensy 3.6 microcontroller which has powerful features. The code is open source, the machine has an eurorack format but is controlled by midi. Lilla’s controls features 12 rotary encoders and 8 pushbuttons and includes MIDI in, MIDI thru, and stereo out. Via the SD card it can load samples, layered across the keyboard, and those can be changed with pitch and envelopes. It plays back with 8 voice polyphony. It also has effects like distortion, bit crusher and compressor on board.
n.12 rotary encoders with pushbutton
n.8 pushbuttons
Teensy program pushbutton
i/o interfaces:
midi in (DIN)
midi thru (DIN)
stereo line output
micro-SD socket
polyphony:
reading files from flash memory: 8
reading files from RAM: 12
Audio files and presets
Lilla uses 44.1kHz 16bit mono .RAW (header-less) audio files, imported from micro-SD card. Lilla can store up to 100 Sounds; a Sound is described by these elements:
an audio file
interval to be played (first sample A - last sample B): from 100 samples to full length
play mode: A -> B, B -> A, loop A -> B, loop A <-> B, loop B -> A, loop B <-> A
fine tune
volume
ADSR parameters
Attack ramp: fast, slow
Audio file is played from flash memory until the interval to be played contains more than 675 samples. Below 675 samples, audio is played from RAM: in this case, an automatic pitch-correction keeps the sound in tune with the standard tuning (middle C: 261.6Hz).
Lilla can store up to 30 setups called Sessions; a Session is a group of up to 8 Instruments; each Instrument is defined by:
a Sound
keyboard span (first key - last key)
keys mode: momentary, hold
root-key
volume
In a Session, all 8 Instruments can also be layered on each other.
