UBZR1 Analog Keyboard Interface

Chelys Lyra

Summary/Usage

UBZR1 can be controlled by a classical analog keyboard.

The Analog Keyboard Interface contains circuitry to link the external Analog Keyboard with the other UBZR1 modules

Functional Description

The Analog Keyboard Interface provides the following functions:

Dispatch the keyboard pitch voltage to the VCO and VCF modules
Dispatch the trigger voltage to the two ADSR modules and to VCO3 (for synchronisation)
Capability to remove VCO3 from the keyboard pitch voltage
Capability to switch VCO3 into LFO mode
Summing of the wheel control voltage coming from the Analog Keyboard with a corresponding wheel control voltage from the Digital Interface
Capability to switch the external analog keyboard off.

Performance Specs

Schematics as PDF or JPG

Interface

Acknowledgements

Footnote

I am planning a related module - the MIDI Keyboard Interface - that would allow a standard MIDI keyboard to be used instead of the Analog Keyboard. The MIDI Keyboard Interface would replace the Analog Keyoard Interface.