LoPaFi is a "keep it simple stupid" version of a low pass filter with a Raspberry-Pi (or Up Board) form factor.

The cap in question is part of the guitar’s tone circuit, which along with a potentiometer forms a variable low-pass filter. A rich folklore has developed over the years around these circuits ...

This is low-pass digital filter runs on Raspberry Pi using Python programming language. The digital filter can be changed to other type of filters such as band-pass and high-pass filter based on ...

This paper comparatively studies typical low-pass filters (LPF) and phase-locked loop ... linear relationship between the cutoff frequency of the PLL filter and its proportional-integral (PI) gains, ...

a low-pass filter, and a Raspberry Pi. With only a 10 mW output this repeater is more of a toy than a useful device, and we’d suggest any licensed amateur wanting to have a go should read the ...

A typical 2nd‐order EMC low‐pass filter consists of a series inductance and shunt capacitance. The chapter also shows two different filter configurations: CL and LC filters. It then looks at the input ...