The best solution to howling. Must-read: Four ways to solve the problem of microphone howling.

php editor Youzi brings you four methods to solve the problem of microphone howling, so that you can say goodbye to the annoying howling sound. When using a microphone, howling noise often interferes with our voice calls or speeches. However, with some simple methods, we can effectively solve this problem. This article will introduce you to four effective methods to solve microphone howling and help you enjoy a clear sound experience. Whether in various occasions such as meetings, speeches, or KTV, these methods can help you solve the howling problem and make your voice clearer and more natural.

In sound amplification situations such as stage performances, KTV, and conference rooms, we often encounter the phenomenon of microphone howling. Severe microphone howling can cause the speakers to be burned.

What to do when you encounter microphone howling? How to deal with it?

Cause of microphone howling

Microphone howling occurs because the microphone can pick up the sound from the speaker, and the speaker transmits the sound through the microphone, and the cycle repeats.

During the circulation process, when the signal energy is strengthened to a certain intensity, it will cause the system to self-excite. The sound emitted by the self-excited signal through the speaker is a howling sound.

Howling generation principle

For example, if you make a call with two mobile phones and talk together, howling will also occur. Phenomenon.

Solution 1

Howling occurs because the microphone can receive the sound from the speaker, so wouldn’t it be enough to prevent the microphone from receiving the sound from the speaker?

Yes! The simplest way is to keep the microphone as far away from the speaker as possible, and avoid pointing the microphone directly at the speaker. This can prevent or reduce the sound from the speaker entering the microphone, thereby reducing the possibility of howling.

Solution 2

Use a microphone with a cardioid or supercardioid pickup pattern.

Omni-directional microphones are non-directional and can easily receive sounds from surrounding speakers, causing howling.

The picture comes from the Internet

The cardioid microphone can receive the sound from the front of the microphone, and the sound from the side will be attenuated to a certain extent. The sound from behind is not received. Compared with cardioid microphones, supercardioid microphones cancel more sounds coming from the sides of the microphone and have weak reception capabilities for sounds from behind.

In sound reinforcement situations, more supercardioid microphones are used, which can reduce the risk of howling.

Solution Three

When holding the microphone, avoid using the wrong grip, such as directly clasping the paw on the microphone head or directly holding the microphone head. This incorrect holding method will destroy the frequency characteristics and directivity of the microphone, causing howling.

Wrong way to hold it

Therefore, in order to avoid microphone howling, do not hold the microphone head when holding the microphone.

Solution 4

It is common to use a feedback suppressor to solve microphone howling. It is a device that automatically pulls the feed point. When acoustic feedback occurs, it will immediately detect and calculate it. Calculate its frequency and attenuation, and execute the command to suppress acoustic feedback according to the calculation results.

Although it is very convenient to use a feedback suppressor, the sound after processing will become very dry, which will have a certain impact on the sound quality.

Many digital audio processors currently have an anti-howling function. When the peak value of the sound field is higher than the set howling point, the processor will automatically suppress the peak value of the sound field to solve the howling phenomenon.

Summary

There are many reasons for microphone howling. Too high microphone gain, uneven system frequency response characteristics, and prominent frequency bands will induce howling.

Similarly, there are many ways to solve the problem of microphone howling. The four methods introduced above are relatively simple or commonly used methods. Reasonable system configuration and adjustment of the mixer or equalizer can solve the problem of howling.

Okay, that’s it for today. I hope it can help my friends. After reading the best solution to howling, "Must-read: Four methods to solve microphone howling", I feel that I have learned a lot. Then help share it! Roses given as gifts leave a lingering fragrance!

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