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An omnidirectional microphone is a type of microphone that is designed to pick up sound equally from all directions. Unlike other types of microphones that have a directional focus or a specific pickup pattern, omnidirectional microphones have the ability to capture sound from all angles, resulting in a true-to-life recording or amplification of the sound source. This makes them highly versatile and ideal for a range of applications.
One of the outstanding features of omnidirectional microphones is their ability to pick up a wide frequency range of sounds. This means that they can accurately capture low, mid, and high-frequency sounds with clarity and detail. Additionally, they have a consistent pickup pattern which ensures that the microphone can capture sound with minimal alterations, making it ideal for recording music, podcasts, or interviews.
Another notable feature of omnidirectional microphones is their high sensitivity to sound. Because they capture sound from all directions, they are capable of picking up even the faintest of sounds. This sensitivity makes them suitable for capturing ambient and background noises in a natural and immersive way, making them a popular choice for field recordings or capturing live performances in a realistic manner.
Furthermore, the design of omnidirectional microphones often incorporates noise-canceling or noise-reducing technology. This helps to minimize unwanted background noise and interference, allowing for clear and focused recordings. It ensures that the microphone picks up the intended sound source with minimal distortion, resulting in a professional and polished audio output.
In conclusion, omnidirectional microphones offer unique and exceptional features that make them an essential tool for recording and amplification needs. The ability to capture sound from all directions, wide frequency response, sensitivity, and noise reduction capabilities make them highly versatile, ensuring that they deliver accurate and high-quality recordings.
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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 |
|
|
When should it be used? |
|
|
Common errors | Capture unwanted sounds when they appear accidentally. |
|
Applications of omnidirectional microphones
Withthe 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.
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In conclusion, an omnidirectional microphone is a type of microphone that captures sound equally from all directions. Its outstanding features make it an ideal choice for certain situations. Firstly, its ability to pick up sound from all directions allows for a more natural and immersive audio recording experience. This makes it ideal for capturing group discussions or musical performances with multiple sound sources. Additionally, omnidirectional microphones tend to have a wider frequency response range, meaning they can accurately reproduce a wider range of frequencies, resulting in high-quality recordings. Furthermore, these microphones often feature a flat response curve, which ensures that the recorded sound remains true to its original source, without any added emphasis or suppression. Lastly, the compact and inconspicuous design of most omnidirectional microphones enables them to be easily placed or concealed for various recording purposes. Overall, with their remarkable versatility and superior audio capture capabilities, omnidirectional microphones are an essential tool in professional audio recording setups, broadcasting, and other applications where capturing sound from all directions is paramount.
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