What type of microphone polar pattern accepts sound from two opposite directions?

The correct answer is that a microphone with a bidirectional polar pattern is designed to accept sound from two opposite directions. This means that it is sensitive to sound coming from the front and the back of the microphone while rejecting sound from the sides. This characteristic makes bidirectional microphones particularly useful for applications such as duets or interviews, where it is important to capture audio from two sources facing each other.

In contrast, unidirectional microphones focus on sound from a single direction while rejecting sound from other angles. Omnidirectional microphones capture sound from all directions equally, making them less suitable for situations that require separation of sound sources. Cardioid microphones, while they also reject sound from the sides, primarily pick up audio from the front in a heart-shaped pattern. Thus, bidirectional microphones stand out for their unique ability to handle sounds coming from two direct sources.