What is omnidirectional microphone? All the outstanding features of omnidirectional microphones

You’ve heard of omnidirectional microphones but do not know what this type of microphone is and how it works. Let’s learn more about the concept and some outstanding information of omnidirectional microphones with Tnhelearning.edu.vn in the following article!

All about omnidirectional microphones

What is omnidirectional microphone?

Omnidirectional microphone with another name is omnidirectional microphone . This is a device that can receive sound from many different directions. This device is often used where there is a large space and there are many people such as a meeting room or stage.

When used, the omnidirectional microphone is capable of capturing and recording the voice whether the speaker is standing in front of or behind the microphone. Even when the speaker moves around the meeting room, the microphone can still capture clear sound.

However, although it is possible to record and record 360-degree voices, the best direction of recording is still in front of the microphone , in other directions, the recording frequency will be reduced compared to the direction directly in front.

Advantages and disadvantages of omnidirectional microphones

Advantage:

• Clear sound from all directions.
• Reduce noise, help listeners not be distracted, such as fans, air conditioners, … Most of today’s omnidirectional microphones are equipped with noise-cancelling, noise-filtering technology to help eliminate effectively eliminate any background noise, for the overall sound quality to be sharper and clearer than ever before.
• Rarely emits howling sounds like directional microphones.
• No need to adjust the equalizer when used in many different places.

Cons: Omnidirectional microphones can pick up unwanted sounds when they appear accidentally.

Working principle of omnidirectional microphone

The omnidirectional microphone has a 360-degree circular pickup pattern , which picks up sound from multiple directions with equal clarity. No matter where the speaker is standing around the microphone, the device can record and output quality sound.

Possessing a more flexible recording range than other types of microphones, this operating feature makes it easy for users to gather and discuss around the microphone.

In a group work environment, it is quite difficult to provide each person with a normal microphone (directional microphone). However, if you own this omnidirectional microphone, you will be able to replace many other directional microphones, effectively saving equipment costs .

The difference between omnidirectional and directional microphones

	Omnidirectional microphone	Directional Microphone
Recording direction	Record sound from many directions.	Capture sound from a fixed direction.
Calibration of audio devices	No need to adjust the equalizer when used in many different places.	Adjust equalizer when used in different places.
User object	Acoustic guitar player. Stereo recorder. Speakers move a lot in the hall or at the orchestra, choir or need to record the sound of waves, waterfalls, etc. The need to record the entire sound in a room, seminars, discussions.	Used for singers when performing or recording. Used for presenters (one microphone for each speaker). Used as a lapel microphone for actors.
When should it be used?	Used for meeting rooms, everyone uses the same microphone. Record orchestral and choir sounds. Filming for television.	Used for tea room or karaoke room. Used to record a certain instrument in an orchestra with many different instruments.
Common errors	Capture unwanted sounds when they appear accidentally.	Noise cannot be removed. Easy to howl.

Applications of omnidirectional microphones

With the ability to capture 360-degree sound , omnidirectional microphones are used a lot at crowded conference meetings and in rooms with large space, helping to save costs. Instead of many desktop microphones for each person as before, only 1 omnidirectional microphone is needed for a meeting room or branch .

Besides, the omnidirectional microphone can be used to record all the audio of an important meeting, secret conversation.

Currently, some types of omnidirectional microphones are also widely used for multi-member online meetings through phone applications. Omnidirectional microphone for online meeting is suitable for meeting rooms from 5 to 10 people .

Notes when choosing to buy omnidirectional microphones for conference rooms

Since most omnidirectional microphones are often used in meetings and conferences, to make sure everyone hears the sound clearly, you should choose to buy a microphone with a high-sensitivity diaphragm .

Normally, the diaphragm of an omnidirectional microphone will radiate from 1.5 – 5 meters away, so you can choose a speaker screen with a volume and sensitivity that reaches 92 – 95 dB, because the large volume capacity will ensure the best performance. wide sound transmission inside the hall.

In addition, the connectivity of the microphone is also an important factor you need to keep in mind. In some cases of online conferencing, the microphone must have a strong Internet connection and stay on for many hours.

• For connection by USB: Capable of serving meeting rooms with more than 10 online participants. At the same time, it allows users to connect to other supporting devices such as phones, mice, computers, … and store data during the meeting.
• For 3.5 connection port: Only used to listen to music or audio, but if used in an online conference room, it will be difficult to exchange opinions.
• For wireless connection: As a radio microphone, the microphone’s acoustic sensitivity is quite high with a frequency of 20 Hz to 20 kHz. However, for wireless microphones, you need to charge the battery or use a battery to make the mic work.

Please refer to some microphone models that are being sold at good prices at Tnhelearning.edu.vn:

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