Angle Grinder Quadrature Oscillator + Waveshaper

Schlappi Engineering Angle Grinder

Schlappi Engineering's Angle Grinder is a quadrature sine wave oscillator with integrated filter and waveshaper. It features a dedicated Spin section, which houses its quad sine wave oscillator. An adjacent Grind section evaluates each phase in relation to the input signal before removing the resulting increment from the input signal. If the Spin section is excessively damped, the Grind section will cease oscillation and the module can be used as a crude state variable filter.

Angle Grinder Features

• Quadrature sine wave oscillator
• Can be oriented as a state variable filter or wave shaping effect
• Spin section features 4x phase related outputs: 0°, 90°, 180°, 270°
• Grind sliders mix signal to Grind section
• Audio/CV input
• Output: direct our from Grind section
• Inject input patches straight to Spin section
• 1v/Oct cv control over Spin
• Damping section neutralizes oscillations
• Range switch moves between Low (0.1Hz to 500Hz) and High (10Hz to above 20kHz)