>>9829581 pb

>>It's a line penetrating a circle.

Your description sounds like a knob of some sorts, perhaps to adjust some kind of frequency.

The Q parameter stands for quality, and controls the shape of the EQ curve. High Q values use steeper curves, which affect a smaller range and allow you to pinpoint specific frequencies. Low Q values affect a wider range of frequencies and tend to sound more gentle when used subtly. Q is also applied to shelves and filters, and dictates how steep of a curve their adjustments come into play along the frequency spectrum.

https://www.waves.com/eq-tips-boost-or-cut-the-frequencies#:~:text=The%20Q%20parameter%20stands%20for,more%20gentle%20when%20used%20subtly.>It's a line penetrating a circle.