What causes the amplifier feedback?

A few things are more disturbing for a soothing song or lively speech than a painful scream of feedback. The amplifier feedback occurs when the microphone lifts its own sound projected from the speaker and the loops that sound back to the system and reinforce it again and reinforce it. This cycle is happening so quickly, with the sounds repeating back and forth at an estimated 1,000 times per second that what comes out is feedback. Depending on the frequency that is a loop, a high scream or deep, flourishing roar may be the feedback of the amplifier. The audio engineer can adjust volumes and frequencies and should take key steps in advance to prevent feedback. However, a person holding a microphone can also play a role in causing feedback. That is why the amplifier feedback is even more likely for wireless microphones that tend to be omnidirectional and allow artists to walk in front of speakers. The closer the microphone gets to the speaker, the hlMore and more, the feedback is likely to be. Also, if the speaker or singer holds the microphone away from the mouth, the sound engineer must turn the volume to adapt and increase the likelihood of feedback.

Although it is impossible to protect completely from the amplifier feedback, there are many things that can be done to prevent or stop as soon as it occurs. Tips include:

• Turn the volume down. This is the closest repair if feedback occurs. The volume should only be maintained as loud as need to hear the audience.
• Keep the microphone behind the speakers so that he cannot pick up his own sound. Direct -rendex -renovators away from a person of speaking or singing.
• If you work with an equalizer, reduce the frequency where the sound is fed back.
• Turn off all microphones that are not used.
• Encourage the person on the microphone to hold it BLízko mouth.
• Use one -way microphones that raise the sound only from the limited direction, usually within about 60 degrees. Omnimicrophones pick up sounds from all directions.
• If possible, the sound resistant in the room by laying the carpet and other materials that conceal the sound of the bouncing back into the microphone.
• Buy and install feedback controller. These electronic processors monitor sound and automatically reduce levels if the feedback frequency is achieved.