Calibr8or

Read the full write-up from Chris Meyer.

Quad Performance Quantizer + Pitch Fine-Tuning App

Commissioned by Chris Meyer (Alias Zone / Learning Modular) - this is a 4-channel Pitch CV fine-tuning tool with performance-oriented transpose controls. Each channel can be clocked for latching of the Transpose value or full S&H of the input. There are 4 preset banks to store and quickly switch configurations.

The Fine Tune controls at the bottom of the main view apply voltage Scaling and Bias Offset to the output stage, per channel. Scaling is in increments of ±0.01% and Bias is effectively ±1/128th of a semitone.

Accurate performance will depend on the calibration of your o_C module itself.

UI Controls

• UP / DOWN buttons - switch channels
• Quick-press Left Encoder - switch between Transpose and Fine-Tune controls
• Quick-press Right Encoder - toggle Scale & Root Note selection
• Long-press Left Encoder with cursor on Transpose - cycle Clocked Transpose / S&H modes per channel
• (new in v1.6.777) Long-press Left Encoder with cursor on Fine-Tune controls - Auto-tuner closed loop DAC calibration routine, ported from References
• Long-press DOWN button - preset switching
  • turn or press Left Encoder to toggle Save/Load
  • use Right Encoder to select
  • UP or DOWN to cancel
• Dual-press UP+DOWN for Clock Setup (shared with Hemispheres)

As of v1.6.6, storing a preset will automatically save App Data to EEPROM in the background.