# Examples `native_gain.c` is a complete trusted native C effect compiled into an offline graph. Build/run with `make build/native-gain && ./build/native-gain`; it needs no GUI/server/plugin SDK. See ../docs/NATIVE_API.md for lifecycle/event contracts. `quality_preview.c` uses public C MIDI, recorder and gain-ramp APIs to generate matched raw/smoothed listening fixtures. Run `make quality-preview`; generated WAVs remain in the ignored build directory. See docs/AUDIO_QUALITY.md for the listening sequence and the distinction between automated checks and human listening acceptance. It never starts a backend or plays audio. `projects/midi-demo.xtc` is an original media/plugin-free MIDI example installed under `share/xtc/examples`. See projects/README.md for opening and playback. [Steinberg SDK examples](steinberg/README.md) build an official-SDK VST3 gain and MIDI synth, qualify them with Steinberg's validator and the xtc C host, and render a WAV offline. An optional Windows ASIO device diagnostic is also provided; it is not yet a qualified audio backend. [JUCE examples](juce/README.md) provide a VST3/standalone Soft Keys instrument using the C engine, native controls and keyboard, presets, JUCE DSP effects, MIDI-to-WAV rendering and explicit VST3 hosting checks. The external JUCE SDK is AGPLv3/commercial and is not required by normal builds.