For those who don’t design audio circuits full-time, a Bessel filter is a linear, passive bandpass filter that preserves waveshapes of signals that are within the range of the filter’s pass ...

A generic filter design starts with at least the five choices ... but that they don’t need to be particularly tightly matched, so that component tolerances aren’t an issue.

Understand the need for input filters and the effects input filters may have on converter responses. Design properly damped single and multi-section filters to meet the conducted EMI attenuation ...