Function Reference: butter
Doepfer A-120 Eurorack 24dB Low Pass Filter Module
DSP Low-pass FIR filter
Octave RF Filters
audio - Slope of 2nd order low pass vs band pass Butterworth filters - Signal Processing Stack Exchange
Low-Pass Filter - Audacity Manual
Second Order Passive Crossovers, 12 dB per Octave
Analog filters
DAYTON AUDIO 3.5K-LPF-4 Speaker Low Pass Filter 3500Hz 12dB/Octave 4 Ohm - Audiophonics
Octave RF Filters
RC - Low Pass Filter - YouTube
Third Order Passive Crossovers, 18 dB per Octave
Of Responses & Resonance
Further With Filters
Project 123
Project 170
Wavefonix 3320 Low-Pass Filter (LPF) Classic Edition - Eurorack Module on ModularGrid
Electronic applications: 2.5 Normalised first-order low-pass filters - OpenLearn - Open University
Passive Low Pass Filters - EEE Parts Database | doEEEt.com
KenSeibert.Com Audio Projects
24dB/ octave Low-pass Filter Circuit Composed of the Same Parameters (μPC882) - Filter_Circuit - Basic_Circuit - Circuit Diagram - SeekIC.com
Tossover Specifications - Radial Engineering
AAS Multiphonics CV-1 Manual
