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How to prevent howling in sound system

How to prevent howling in sound system

  • Categories:Industry news
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  • Time of issue:2020-01-10 16:34
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(Summary description)The problem of howling (that is, the tail phenomenon of the microphone sound when it is located at the critical point of acoustic howling) is an abnormal phenomenon that often occurs in sound reinforcement systems. In a sound reinforcement system, when a microphone is used for pickup, due to the microphone pickup It is not possible to adopt acoustic isolation measures between the area and the playback area of ​​the speaker. The sound of certain frequencies is too strong, which causes the acoustic and electrical signals to oscillate and cause howling. Causes and Harm of Howling Simultaneous use of microphone and speakers The sound from the audio can be transmitted to the microphone through the space The sound energy from the speaker is large enough, and the microphone's pickup sensitivity is high enough. Once the howling occurs, the lighter will cause the microphone volume to be unable to be turned up. After being turned up, the howling is very serious, which will have a bad impact on the live performance. When the howling critical point is reached, after the microphone sound is turned on, there will be a sound ringing phenomenon. There is a reverberation in the sound, which destroys the sound quality. In severe cases, the speaker or power amplifier is burned due to the excessive signal. It is not uncommon to burn the speaker tweeter due to howling. In the howling state, a strong signal will cause clipping (cut-top) distortion of the amplifier and generate a large number of high-frequency harmonics. If the tweeter cannot withstand this, Powerful high-frequency signals will cause the voice coil to burn out. In addition, in the howling state, if the output of the power amplifier is overloaded, it may also be burned. How to suppress howling

How to prevent howling in sound system

(Summary description)The problem of howling (that is, the tail phenomenon of the microphone sound when it is located at the critical point of acoustic howling) is an abnormal phenomenon that often occurs in sound reinforcement systems. In a sound reinforcement system, when a microphone is used for pickup, due to the microphone pickup It is not possible to adopt acoustic isolation measures between the area and the playback area of ​​the speaker. The sound of certain frequencies is too strong, which causes the acoustic and electrical signals to oscillate and cause howling.

Causes and Harm of Howling

Simultaneous use of microphone and speakers

The sound from the audio can be transmitted to the microphone through the space

The sound energy from the speaker is large enough, and the microphone's pickup sensitivity is high enough.

Once the howling occurs, the lighter will cause the microphone volume to be unable to be turned up. After being turned up, the howling is very serious, which will have a bad impact on the live performance. When the howling critical point is reached, after the microphone sound is turned on, there will be a sound ringing phenomenon. There is a reverberation in the sound, which destroys the sound quality. In severe cases, the speaker or power amplifier is burned due to the excessive signal.

It is not uncommon to burn the speaker tweeter due to howling. In the howling state, a strong signal will cause clipping (cut-top) distortion of the amplifier and generate a large number of high-frequency harmonics. If the tweeter cannot withstand this, Powerful high-frequency signals will cause the voice coil to burn out. In addition, in the howling state, if the output of the power amplifier is overloaded, it may also be burned.

How to suppress howling

  • Categories:Industry news
  • Author:
  • Origin:
  • Time of issue:2020-01-10 16:34
  • Views:
Information
The problem of howling (that is, the tail phenomenon of the microphone sound when it is located at the critical point of acoustic howling) is an abnormal phenomenon that often occurs in sound reinforcement systems. In a sound reinforcement system, when a microphone is used for pickup, due to the microphone pickup It is not possible to adopt acoustic isolation measures between the area and the playback area of ​​the speaker. The sound of certain frequencies is too strong, which causes the acoustic and electrical signals to oscillate and cause howling.
 
Causes and Harm of Howling
 
Simultaneous use of microphone and speakers
 
The sound from the audio can be transmitted to the microphone through the space
 
The sound energy from the speaker is large enough, and the microphone's pickup sensitivity is high enough.
 
Once the howling occurs, the lighter will cause the microphone volume to be unable to be turned up. After being turned up, the howling is very serious, which will have a bad impact on the live performance. When the howling critical point is reached, after the microphone sound is turned on, there will be a sound ringing phenomenon. There is a reverberation in the sound, which destroys the sound quality. In severe cases, the speaker or power amplifier is burned due to the excessive signal.
 
It is not uncommon to burn the speaker tweeter due to howling. In the howling state, a strong signal will cause clipping (cut-top) distortion of the amplifier and generate a large number of high-frequency harmonics. If the tweeter cannot withstand this, Powerful high-frequency signals will cause the voice coil to burn out. In addition, in the howling state, if the output of the power amplifier is overloaded, it may also be burned.
 
How to suppress howling

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