Greybound Engineering Notes

Greybound is a circuit-informed guitar amp and pedal DSP project. These docs are the working memory for the codebase: design state, analysis results, reproducible monitor runs, and the decisions that should guide future implementation.

Current Focus

• Flexible pedal and amp chaining where any processor can be placed in any order.
• Shared electrical state between processors so impedance, signal level, and coupling behavior can influence adjacent stages.
• Monitor tooling that produces both greybound-monitor.log and a rendered WAV file for repeatable analysis.
• Circuit documentation for pedal models before implementation details are locked into DSP code.
• Research tracking for papers that can move models from hand-tuned graybox approximations toward fitted, industrial graybox implementations.

Working Rule

When behavior changes, update the relevant page here with:

• the design decision,
• the command that proves it,
• the resulting observation,
• any known limitation.

That keeps the docs useful for engineering work and for new contributors.