Analog Craftsman - ac4046 VCO
Analog oscillator with Sine, Tri, Square, Saw, and Skew outputs. PWM, linear and exponential FM, oscillator sync. Based on the X4046 VCO and authorized by Thomas Henry and Fonik.
AC coupling mode assists in pitch stabilization by accounting for voltage offsets introduced with modulation sources. Linear FM modulates a fixed frequency, whereas Exponential FM introduces more pitch modulation by following standard v/oct scaling.