The heart shape, called a cardioid, is common in nature.

心脏的形状，称为心形，在自然中很常见。

The WH20 has a cardioid (unidirectional) pickup pattern.

该WH20有一个心形（单向）拾音模式。

The cardioid pattern can also be used to reduce of an orchestra or audience noises.

心形也可用于减少管弦乐队或观众的噪声.

Cardioid is directional on one side only, and is typically used for drums.

心形是单一的指向一个方向, 非常适合用来录鼓.

The cardioid pickup pattern minimizes annoying feedback when used close to sound reinforcement speakers and monitors, while reducing the pickup of unwanted off axis sounds.

最小的心形拾音模式使用时，恼人的反馈接近扩声音箱和显示器，同时减少不必要的离轴声音回升。

What does the cardioid envelope?

心脏线的包络为何?

Maybe, but I use cardioid most of the time.

或许可以，但是我大多数情况下会使用心型指向。

If the mic is a condenser with pattern selection, use super cardioid or cardioid.

如果选择电容麦, 那么就用心型或超心型指向的.

Construct rotating cardioid and deltoid while remaining orthogonal to each other.

作旋转的心脏线和旋转的三角线,且彼此维持正交.

Construct rotating cardioid and astroid while remaining orthogonal to each other.

作旋转的心脏线和旋转的星状线,且彼此维持正交.