AudCalc is an portable synthesizer and sequencer.
It has 8 voices which can switch between synthesis (using mutable instruments braids cores) and sampling. The sequencer supports parameter locks, conditional triggers, and various time signatures and loop lengths. There are also two built in effects sends for building a full track. Its fun to jam with by itself, and can link into your larger portable music setup via midi or cv clock.
Specifications
Synthesizer
- many different oscilators from MI Braids
- 2 assignable AD envelopes
- Lowpass filter
- volume, pan, legato, finetune
- 2 effects sends (delay & reverb)
- Assignable LFO
- Simple sampler (sampling via line in or onboard mic)
- 16 patches, 8 simultaneous monophonic voices
Sequencer
- 16 patterns, with assignable lengths from 1-64 steps
- 4096 pattern lock locations for overriding synthesizer settings per step
- each of the 16 patches can run at 2x-1/8 bpm rate, with some fun subdivisions
- Conditional triggers
- Pattern chaining
- Step ratcheting / retriggers
Hardware
- RP2040 core
- 1000mah rechargable and replacable battery. USB-C charging
- TRS Midi in/out, audio in/out (3.5mm trs), usb midi
- 100x65x25mm - Approximately the size of a cassette tape box+knob height
- Body made with FDM Black PLA, buttons with FDM translucent TPU
- fr4 (circuitboard) faceplate
- OLED display