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51 lines
2 KiB
Markdown
51 lines
2 KiB
Markdown
# Pascalcompressor
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An audio compressor audio plugin, built with [JUCE](https://juce.com/) as an Audio Unit (AU) and VST3.
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## What it is
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Pascalcompressor is a dynamics processing plugin - a compressor - that reduces the level of audio that exceeds a threshold, making loud parts quieter and the overall signal more consistent. It's the kind of tool you use to glue a mix together, tame peaks, or shape the punch of a track.
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## What it does
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The plugin's DSP (in `Source/Compressor.cpp`) implements a classic soft-knee compressor with the standard controls:
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- **Input** - pre-gain applied to the signal before detection
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- **Threshold** - the level above which compression kicks in
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- **Ratio** - how much gain reduction is applied above the threshold
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- **Attack** - how fast the compressor responds once the signal crosses the threshold
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- **Release** - how fast it lets go after the signal drops back below
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- **Makeup gain** - compensates for the level lost to compression
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- **Dry/wet** - blend between the uncompressed and compressed signal, handy for parallel compression
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It uses a feed-forward design with a mono-summed detector and a one-pole envelope follower, so the gain reduction feels smooth and "glued" to the source.
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## Why it's called Pascalcompressor
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A friend of mine is named Pascal. This is named after him - "the Pascal compressor."
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## Building
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The project is set up with CMake and JUCE's `FetchContent` (it pulls JUCE automatically into `build/_deps`). See the `Makefile` for common targets, e.g.:
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```sh
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make build # configure + build default targets
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make install # build and install the plugin
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make smoke # run a smoke test against the built AU (if present)
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```
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Configuration defaults to a build in `build/`; see the `Makefile` for available
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variables (e.g. `CONFIG`) and targets.
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Build output lands in `build/Pascalcompressor_artefacts/` (`.component` for AU, `.vst3` for VST3).
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## Repository layout
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```
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Source/ plugin DSP and editor code
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Tests/ unit tests
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CMakeLists.txt
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Makefile
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```
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