cardioid

/kahr-dee-oid/US // ˈkɑr diˌɔɪd //UK // (ˈkɑːdɪˌɔɪd) //

心形,心型,心形的,心声

Definitions

n.名词 noun

1
Mathematics.
- : a somewhat heart-shaped curve, being the path of a point on a circle that rolls externally, without slipping, on another equal circle. Equation: r = a.

The name cardioid stems from the heart-like shape you see in a diagram of its polar pattern.
Engineers often choose hypercardioid or supercardioid mics when even a cardioid mic is getting too much bleed from other sources.
Supercardioid mics are more focused on the front than cardioid mics but have a small lobe that picks up from the back but at a much lower level.
They often have a cardioid polar pattern that does an excellent job rejecting background noise, which is why they commonly turn up in the hands of stage performers and field reporters.
Its single capsule has a cardioid polar pattern that focuses the listener on your voice while holding ambient noise at bay.