Bidirectional

Definition

Bidirectional refers to a type of microphone polar pattern that captures sound from two opposing directions, typically from the front and rear. This feature allows for a unique recording perspective, making it ideal for specific audio applications such as duets or interviews where multiple sound sources need to be captured simultaneously. Understanding bidirectional microphones enhances your ability to choose the right microphone for different recording scenarios.

5 Must Know Facts For Your Next Test

1. Bidirectional microphones are often used in live settings for interviews or panel discussions where two speakers face each other.
2. The bidirectional pattern can create a more natural sound when recording conversations, as it captures the voices of both participants with balance.
3. These microphones are less effective in noisy environments because they can pick up sounds from both the front and back.
4. In studio settings, bidirectional microphones can be utilized for recording instruments like acoustic guitars with vocals simultaneously.
5. Some popular examples of bidirectional microphones include the Shure SM58 and the Audio-Technica AT2020, which are favored for their versatility.

Review Questions

• How does the bidirectional polar pattern affect the way sound is captured during an interview setting?
  • In an interview setting, a bidirectional polar pattern allows the microphone to capture sound equally from both the interviewer and interviewee. This means that both voices can be recorded clearly and at similar levels, creating a balanced and natural listening experience. It also minimizes background noise from other directions, which helps keep the focus on the conversation between the two subjects.
• Compare and contrast bidirectional microphones with cardioid microphones in terms of their use in different recording environments.
  • Bidirectional microphones are ideal for situations where two sound sources need to be recorded simultaneously, such as interviews or duets, capturing sound from both front and rear. In contrast, cardioid microphones are better suited for isolating a single sound source since they primarily pick up sound from the front and reject noise from the sides and back. This makes cardioid mics preferable in noisy environments where background sounds need to be minimized.
• Evaluate the advantages and disadvantages of using a bidirectional microphone in a live performance context.
  • Using a bidirectional microphone in a live performance context has its pros and cons. On one hand, its ability to capture sound from both front and back allows for rich interactions between performers, enhancing duets or collaborative pieces. However, this design also makes it susceptible to feedback and ambient noise since it picks up sounds from all around it. Therefore, careful placement and monitoring are essential to ensure clear audio while minimizing unwanted interference.

Related terms

Polar Pattern:

A polar pattern describes how a microphone picks up sound from various directions, indicating sensitivity to sound waves based on their angle relative to the microphone.

Cardioid: A cardioid microphone has a polar pattern that primarily captures sound from the front while rejecting noise from the sides and rear, making it useful for isolating a single sound source.

Omnidirectional: An omnidirectional microphone captures sound equally from all directions, which is useful for capturing ambient sounds or when multiple sources are present.