Circuit Response
every model has an edge, and the figure carries it
Generator

A section whose zero sits 1.30× above its pole

computed by solving, not by drawing. The series arm is an inductor and 5.92 nF in parallel, so it is an open circuit at 1300 Hz and nothing gets through — that is the transmission zero, and it belongs to the arm alone. The pole pair belongs to the total shunt capacitance of 10.0 nF, so it sits at 1000 Hz, always below. Far above both, the response settles at -4.6 dB, which is exactly the fraction of the capacitance in the series arm — the stopband floor and the zero placement are one choice, not two.
A section whose zero sits 1.30× above its polecomputed by solving, not by drawing. The series arm is an inductor and 5.92 nF in parallel, so it is an open circuit at 1300 Hz and nothing gets through — that is the transmission zero, and it belongs to the arm alone. The pole pair belongs to the total shunt capacitance of 10.0 nF, so it sits at 1000 Hz, always below. Far above both, the response settles at -4.6 dB, which is exactly the fraction of the capacitance in the series arm — the stopband floor and the zero placement are one choice, not two.100-10-20-30-401001k10k100kfrequency (hertz)magnitude (decibels)pole at 1000 Hzzero at 1300 Hzfloor -4.6 dB = Cp/CtotalL ∥ Cp, then R ∥ C,,,,,,,,,solved, then checked — one capacitance split in twozero 1.30× the pole, floor -4.6 dB

Drawn above at its default parameters, which is almost never how an essay calls it. A placement states the numbers that essay is arguing about, so the figure a reader meets is about that argument rather than about the generator — 98% of the placements on this site pass one, and the phase that raised that number from 12% found eight captions describing a figure the page was not showing.

At those defaults the edge it states is zero 1.30× the pole, floor -4.6 dB — the right-hand slot of the caption strip, which on this site is never used for anything else, and which is read back out of the drawing above rather than out of the code that wrote it. It belongs to Filters, measured not tabulated, which is to say a change to it is a change to lib/figures/filters.js. It takes a slider on zero ÷ pole frequency with 5 settings, and every one of them has passed the same assertions as the frame above — a figure whose circuit stops doing what its caption says at any setting stops the build.

Called by 1 essay

which is the blast radius of changing it

What actually fills a null

A ten per cent error in the two components of a notch's arm leaves the null three hundred decibels deep — it moves it rather than filling it. What fills it is loss, at twenty decibels per decade of arm resistance exactly. And the depth at the frequency the notch was designed for splits into two orders depending on which way the two errors go: one per cent parts leave 79 decibels one way and 33 the other.

Filters, measured not tabulated

Every generator