What is a feedback suppressor of the acoustic feedback phenomenon?.

Feedback Destroyer is a dedicated sound system for acoustic feedback suppression, a device to eliminate howling. .PA system microphone involved in improving the sound system during power burst, the sound through the speakers directly or indirectly (sound reflection) of the way and into the microphone, so that the positive feedback of the entire PA system, that is acoustic feedback phenomenon. .It can produce the sound decay, or whistle, limiting the gain to improve sound transmission. .The phenomenon of reinforcement feedback sound is very bad, it undermines the overall sound reinforcement effect, while the acoustic feedback signal is great, sound reinforcement equipment likely to cause damage, especially for amplifier, speakers, amp overload so burned, so that high-frequency speaker unit .damage. .Once the acoustic feedback sound system, sound reinforcement system can not further increase the power, burst power is limited, the machine can not function properly transport. .Acoustic feedback phenomenon is mainly caused by the following reasons: (1) poor sound reinforcement environments, architectural acoustic design is unreasonable, there is the sound gathering problems. .(2) improper speaker layout, the actors use the microphone, the sound directly into the radiation zone. .(3) electro-acoustic equipment selection mismatch, poor connections between devices, there are cold solder joint problem. .(4) sound system debugging is not good, there is the work of the device is in critical condition, a slight disturbance to self-excited. .In order to reduce acoustic feedback phenomena, first of all, improvement of the environment should be considered PA, increase sound absorption materials, reduced sound reflection. .Second, reasonable arrangements for the placement of the speaker to avoid the microphone directly at the sound radiation area. .Carefully check the cable between the devices, properly connected, solid welds. .Matching equipment, technical indicators should be in the same grades. .Transfer system integration process, to avoid some of the equipment is in working condition critical. .If, after the above adjustment, the still howling phenomenon, consider an increase in the sound reinforcement system, feedback suppressors..