"Noisebud Burt is our first attempt to make a VSTi. We needed a bass synth that delivered more grit and dirt and didn’t need hours of twiddling before getting there. We based the sound engine on waveshaping through distortion, bit crush and resonance since our VST fx chains on bass channels almost always contain that sort of plugins. The result is an angry old fart that we named Burt."
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Source via Music Informatory