JE-201

JE-201: Digital modelling of the Roland RE201.

This was my final year project on the BSc Sound Engineering and Production course at Birmingham City University. The DSP code implements two variations of tone stack emulation and two variations of tape saturation emulation. Other effects modelled include control ballistics, wow and flutter, tape speed dependant equalisation and spring reverberation.

The project is currently packaged as a JUCE plugin, by default the plugin implements a WDF shelving tone stack and physical tape hysteresis processing:

• The tone stack object can be toggled to change from WDF to a VA tone stack.
• The tape magnetisation object can be toggled from tape hysteresis processing to a more traditional error function based sigmoid non-linearity.
• Reverberation is implemented by FFT convolution of an impulse response of the reverb only setting of a Boss RE-2.

Since leaving university I have added a waveguide spring reverb algorithm and the plugin allows toggling between FFT reverb and waveguide. Future work is planned to improve the waveguide algorithm as it currently sounds quite robotic.