Cited as a reference · for some experience
EEVblog #855 - Ceramic Capacitor Piezoelectric Effect
Why people recommend it
An EEVblog video demonstrating audible whine from ceramic capacitors, linked when people ask why a circuit board is making a high pitched noise.
Watch for: Mostly cited as supporting evidence rather than as a tutorial
In their words
High-K ceramic caps (ie, not C0G) are piezoelectric: they expand, contract and flex depending on the voltage applied to them, which means they convert voltage ripple into sound.
bobflux on electronics.stackexchange.com, Jan 2020. CC BY-SA.
