acceptance angle

acceptance angle

Acceptance angle of cardioid microphone.

The acceptance angle is the angle from the axis of a unidirectional microphone that defines its usable working area. A cardioid microphone, for example, has a 120° acceptance angle. Hypercardioid microphones extend the working distance farther, with their 100° acceptance angle, providing greater rejection of sound from the sides. Outside the acceptance angle, microphone sensitivity is reduced.