Audio plugins based on the Audio Toolkit and WDL-OL

Get WDL-OL from github, and copy this repository besides WDL-OL. Specify in common.xcconfig the ATKROOT and BOOSTROOT path.

Once this is done, compile the plugin you want.

This plugin emulates almost all stages of the Boss SD1 overdrive, namely:

• the overdrive stage
• the tone stage
• the level stage

The input stage and output stage are not emulated, as they depend on previous and after elements like guitars, pedals...

It uses a 32x oversampling to limit aliasing (which is why the plugin uses so much CPU).

This plugin is a mono compressor, with a power gain filter (RMS computation done by an AR(1) filter with a 1ms memory), attack/release filter and then a gain compressor (threshold from -40dB to 0dB, power scale, ratio/slope from 1 to 100, softness) that drives a filter that applies the computed gain. A make-up filter is available after the compressor.

This plugin is a mono expander/noise gate, with a power gain filter (RMS computation done by an AR(1) filter with a 1ms memory), attack/release filter and then a gain expander (threshold from -60dB to 0dB, power scale, ratio/slope from 1 to 100, softness) that drives a filter that applies the computed gain.