Ladder Filter Schematic. Eventually the transistor ladder filter was the very first synth module i built initially in a cardboard. A usb ladder crystal filter with two crystals.
Ladder type filters for simplicity will start with all pole ladder type filters convert to integrator based form example shown then will attend to high order ladder type filters incorporating zeros implement the same 7th order elliptic filter in the form of ladder rlc with zeros find level of sensitivity to component mismatch. Like the moog ladder roland s ladder filter is a 24db octave low pass filter. A less common use would be to make a bandpass filter bpf for an rf signal.
A lsb ladder crystal filter with n 4.
The moog 904 a is often heralded as the greatest filter of all time offering a simple set of controls and a steep 24db octave slope. Most hobbyists use crystals as an external clock signal for a microcontroller. Appendix b converting prototype components to k and q. But one filter stands above the rest for being creative effective and i have on good authority audibly brilliant.
