Hey there! As a microphone supplier, I often get asked about different types of microphones. One that comes up quite a bit is the bidirectional microphone. So, let's dive in and explore what a bidirectional microphone is, how it works, and where it shines.
What Exactly is a Bidirectional Microphone?
A bidirectional microphone, also known as a figure - 8 microphone, gets its name from the shape of its pickup pattern. If you were to map out the areas where the microphone is most sensitive to sound, it would look like the number 8. This means it picks up sound equally well from the front and the back, while being less sensitive to sound coming from the sides.
Imagine a line running through the center of the microphone. Sounds that are directly in front or directly behind the microphone are picked up very clearly, but as you move towards the sides, the microphone's sensitivity drops off significantly. This unique pickup pattern makes bidirectional microphones different from other types like omnidirectional (which picks up sound from all directions) or unidirectional (which mainly picks up sound from one direction).
How Does it Work?
The magic behind a bidirectional microphone lies in its design. Inside the microphone, there are usually two diaphragms or sound - sensing elements. These diaphragms are arranged in such a way that they respond to sound waves coming from opposite directions.
When a sound wave hits the front diaphragm, it causes it to vibrate. At the same time, if there's a sound wave hitting the back diaphragm, it also vibrates. The electrical signals generated by these vibrations are then combined in a way that emphasizes the sounds coming from the front and back, while canceling out or reducing the signals from the sides.
Where is it Used?
Interviews and Conversations
One of the most common uses of bidirectional microphones is in interview settings. Picture an interviewer and an interviewee sitting across from each other. You can place a bidirectional microphone between them. This way, the microphone can pick up the voices of both the interviewer and the interviewee clearly, without having to worry about constantly adjusting the microphone or using multiple microphones. It's a great setup for podcasts, radio interviews, and one - on - one conversations.
Musical Performances
In the world of music, bidirectional microphones have their place too. For example, in a duet performance where two singers are standing face - to - face, a bidirectional microphone can capture both voices evenly. It can also be used to record acoustic instruments like guitars or violins when you want to capture the sound from both the front and the back of the instrument to get a more full - bodied sound.
Sound Reinforcement in Specific Spaces
In some large rooms or auditoriums, bidirectional microphones can be used to pick up sound from two specific areas. For instance, if you have a stage with performers at the front and a choir at the back, a well - placed bidirectional microphone can capture the sound from both groups simultaneously.
Our Bidirectional Microphone Offerings
As a microphone supplier, we understand the importance of having high - quality bidirectional microphones for different applications. We offer a range of products that are designed to meet the diverse needs of our customers.
If you're looking for a more traditional option, our Wired Handheld Microphone is a great choice. It's easy to use and provides excellent sound quality. The bidirectional pickup pattern on this microphone ensures that you can capture clear audio from both the front and the back.
For those who need more flexibility, our UHF Wireless Microphone System with a bidirectional microphone is a top - notch solution. You can move around freely without being restricted by cables, and the system offers reliable signal transmission and great sound reproduction.
And if you're setting up a podium for presentations or speeches, our Podium with Speaker and Microphone comes with a bidirectional microphone built - in. It's a complete package that provides a professional look and excellent audio capture for your events.
Advantages of Using Bidirectional Microphones
Versatility
As we've seen, bidirectional microphones can be used in a wide variety of situations. Whether it's an interview, a musical performance, or a public speaking event, they can adapt to different needs. This versatility makes them a valuable addition to any audio setup.
Natural Sound Capture
When recording conversations or duets, bidirectional microphones can capture the natural interaction between the speakers or performers. Since they pick up sound from both sides, the audio sounds more realistic and less forced compared to using other types of microphones.
Reduced Feedback
In some cases, bidirectional microphones can help reduce feedback. Because they are less sensitive to sound from the sides, they are less likely to pick up the amplified sound from speakers placed to the side, which can cause that annoying high - pitched screeching sound.
Disadvantages to Consider
Sensitivity to Background Noise
Since bidirectional microphones pick up sound from two directions, they are also more likely to pick up background noise from those areas. If there's a lot of noise behind or in front of the microphone, it can get mixed in with the desired audio. You may need to take extra steps to control the environment or use noise - reduction techniques.
Limited Side Protection
As mentioned earlier, the sides of a bidirectional microphone are less sensitive. While this is an advantage in some situations, it can also be a drawback. If there are important sounds coming from the sides that you want to capture, a bidirectional microphone may not be the best choice.
Tips for Using Bidirectional Microphones
Placement is Key
Proper placement of the bidirectional microphone is crucial. In an interview setting, make sure it's placed exactly between the two speakers. In a musical performance, position it at the right height and distance from the instruments or singers to get the best sound.
Consider the Environment
Before using a bidirectional microphone, assess the environment. If there's a lot of background noise, try to minimize it or use additional sound - proofing measures. You can also use a pop filter to reduce plosive sounds (like the "p" and "b" sounds) when recording voices.
Contact Us for Your Microphone Needs
If you're interested in learning more about our bidirectional microphones or any of our other microphone products, we'd love to hear from you. Whether you're a podcaster, a musician, an event organizer, or just someone in need of a good microphone, we have the solutions for you. Reach out to us to start a conversation about your specific requirements and let's find the perfect microphone for your setup.
References
- Microphone Basics: A Guide to Understanding Pickup Patterns, Audio Technology Handbook
- The Art of Sound Recording, Professional Audio Publications