What Is An Omnidirectional Microphone & How Do They Work

In a fast-paced conferencing environment, sound can come from every direction. Sometimes, your team needs a microphone that can capture ideas from everyone in the room, whenever inspiration strikes.

Omnidirectional microphones are microphones that pick up sound with equal gain from all sides or directions of the microphone. This means that whether a user speaks into the microphone from the front, back, left or right side, the microphone will record the signals all with equal gain. 

This is in contrast to unidirectional microphones, which pick up sound with high sensitivity only from a specific side.

Omnidirectional microphones are recommended in any situation that requires viewers or audience members to hear sounds from multiple directions. 

If a single musician is performing on stage, a unidirectional microphone might be a better choice as the mic will pick up more of the sound as it is directed right into the device and less of the background sounds.

Many musicians swear by omnidirectional mics for moments when multiple instruments need to be picked up at once. 

For bands trying to record or perform with a drum set and multiple electric guitars, omnidirectional microphones make it easy to clearly hear each individual instrument. The piano is another instrument that sounds great over an omnidirectional mic. 

For performances like musicals or plays with multiple actors on stage, omnidirectional microphones can easily and clearly pick up sounds from several different people at one time, making the show more audible to the audience.

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Advantages Of Using An Omnidirectional Microphone

1) Less Wind Noise

The rear acoustic ports that are present on every unidirectional microphone are also additional openings into which wind can enter. 

Also wind blowing by the rear ports can create turbulence and that causes wind noise. An omni has no rear ports so wind noise is minimized.

2) No Bass Build Up due to Proximity Effect

An omnidirectional mic does not exhibit a build-up of bass (“boominess”) when the talker is close. Proximity effect, as this is known, is a characteristic of unidirectional microphones.

3) Less Handling and Vibration Noise

As most handling and vibration noise consists of low frequencies, the lack of proximity effect with an omni equates to less of this type of noise.

4) May be Used Upside Down as well as Right Side Up

As an omnidirectional mic hears equally well in all directions, it works whether it is right side up or upside down. 

While using a microphone upside down rarely happens with handheld designs, it is a common occurrence with tiny clip-on lavalier mics.

Are you ready to experience the dynamic power of omnidirectional mics? We invite you to check out Best Omnidirectional Microphone Reviews for your needs.

Written by:
Amit Gupta
Amit Gupta

Hi, my name is Amit Gupta, and I am the owner and contributor at Radaudio. My passions include guitar, bass, and piano, as well as a range of classical instruments that I have been playing since school.

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