What is a directional microphone? What are the benefits of directional microphones?

In microphones, there are three basic classifications of directionality: omnidirectionality, bidirectionality, and unidirectionality.

1. Omnidirectional microphone.

Omnidirectional microphones (also known as non-directional microphones) pick up sound in all directions and are equally sensitive to sound from all directions. Ideal for picking up room environmental effects. While this feature is convenient for use in television broadcasts where several people are standing or sitting around a single microphone, in television productions it is often necessary to use some directional microphones.

First, omnidirectional microphones are not effective in reducing or eliminating undesirable sounds, such as camera noise, noise around the scene, etc., and cannot maximize the voice of the main speaker.

2. Bidirectional microphone Microphone directivity description.

This microphone is also called the (figure 8) type. It picks up the sound of two measurements, not the front or rear. Typical use is between two instruments, or two people standing facing each other facing the microphone, so that the two voices can be recorded together, while retaining the independence of the two.

Bidirectional microphones are primarily sensitive to sound coming from both directions.

3. Unidirectional microphone.

Unidirectional microphones are sensitive to sound coming from one direction. According to their sound characteristic curves, they can be divided into 4 categories: cardioid curves, super cardioid curves, special cardioid curves, etc., each with slightly different directional curves.

1. Heart-shaped curve.

This microphone senses the sound directly in front of it, with a small extension on both sides. Cardioid characteristic curve microphones are sensitive to a wide range of sound in front of the microphone, but not to sound coming from behind the microphone. When placed 2 m or more away from the speaker, it tends to pick up some unwanted surrounding sounds, including reflections from walls.

2. Monopoly of supercardioid Zhengzhou microphone Zhengzhou microphone wholesale** Microphone directivity description.

This microphone picks up a longer range of sound from the front, but receives very little from the sides. The supercardioid shape is more directional than the cardioid curve, and when this type of microphone is pointed at a sound source, interfering sounds (off-axis) are often suppressed.

3. Special heart type.

This microphone can pick up sound farther from the front, but not from both sides. Due to its super directivity, ambient noise can be shielded to the maximum. Cardioid microphones are more directional.

This microphone has a small angle of sound reception, and most of the sound outside the angle will be suppressed, but it must be correctly pointed at the sound source when used, and the microphone pointing must be adjusted with the movement of the speaker.

Unidirectional generally only has cardioid directives (only cardioid directives can be used when recording) Zhengzhou microphone monopoly Zhengzhou microphone wholesale** Microphone directivity description Multidirectional generally has cardioid direction, figure 8, omnidirectional three kinds. Hope.

Hello: Directional microphones are: omnidirectional, bidirectional, unidirectional. The biggest benefit of directional microphones is improved speech intelligibility in noisy environments. Hope mine is helpful to you!

Hello! 1. Omnidirectional.

2. Single direction.

3. Cardioid direction.

4. Two-point type.

Microphone directivity is a description of the microphone's inspiration pattern of sound from all directions in space, and is an important property of the microphone.

In many cases, the first consideration in the selection of a microphone is its directivity, followed by other attributes of the microphone.

With the exception of omnidirectional microphones, the rest of the directivity is based on multi-diaphragm technology.

By changing the microphone's cavity settings and mixing the sound signals received by the modulated multi-diaphragm, the microphone gains sensitivity to sounds from different directions. Most microphones are monopolar, but some microphones have the ability to switch their polar pattern.

1. Directional microphone, generally the pickup radius is very small, 30 cm is a large one, single use, put it on the side of the mouth, the sound quality is very good, because it does not pick up the sound no matter how far away.

The shape is generally gooseneck, a rod, a curved rod, reaching out to your mouth, directive, and only listening to your voice.

Unidirectional microphones, sensitivity is limited to a certain range. If the sensitivity is too high, it will cause a sharp whine, etc., and many other equipment will be involved.

As for why not make the pickup radius bigger, there's a reason for that. More on that later.

2. Omnidirectional microphones, generally have a large pickup radius, one meter, two meters, three meters, and five meters, compared with more than ten centimeters, this level is very different, it is not just to pick up a person's voice, but multiple people, five or six, seven or eight or even a dozen.

The sensitivity of the omnidirectional microphone is very high, the omnidirectional microphone pickup radius is too large, and it will also pick up more ambient noise, so the sound quality is not as good as the unidirectional microphone, unless you do a good job of noise reduction. There is definitely a difference between collective use and individual service.

But the omnidirectional microphone has an advantage, the wiring is simple, and there is no need to arrange them one by one. It is suitable for some small meetings, impromptu meetings, some remote discussions, remote operations.

3. The unidirectional microphone generally supports local amplification, and the omnidirectional microphone generally does not support local amplification, which should be noted, because of such a high sensitivity, the local amplification howling caused by it is very terrifying, and it is difficult to deal with the current technology.

It's just that the pointing is different, and it's usually heart-shaped or supercardioid-shaped.

It is the position of the sound is different, one-way is one-way, which side is recorded on which side, which side is clear, omnidirectional is the full range, all the sounds around can be recorded without turning, and the singing recording is good with one-way