What is a feedback suppressor?.

Feedback Destroyer to eliminate the phenomenon of feedback whistle, while maintaining sufficient volume and good sound quality methodology, process. .During the meeting, performances, lectures, presentations and many other occasions, a good sound system is essential. .In practice, we often encounter this kind of problem, which led to the howling feedback phenomenon is most commonly encountered headache. .Not only harsh ugly, and potentially even the PA speaker system to produce great damage. .Early times, people often use sub-equalizer (EQ) as the acoustic feedback suppression device. .Since EQ filters are fixed and not change, can not be precisely targeted to the feedback point. .In addition, the EQ filter bandwidth wider, deeper notch depth, loss of use of the process will be a lot of sound power. .The emergence of the feedback suppressor equalizer to overcome the acoustic feedback suppression device as much to be desired. .Compared with the graphic equalizer section, which has three major advantages: first, with automatic function, set up, no need to manually adjust the sound engineer; followed by the automatic search, precise positioning feedback frequency; third and most important .advantage of the macro filter feedback suppressor do not have very deep or very wide, it is narrower than the multi-stage EQ filter several times, which means sound engineers can ensure the situation does not occur whistle push the system to gain more .high. .Feedback Destroyer in sound reinforcement system, if the microphone volume of a larger increase, it will spread the voice of speakers due to whistle the microphone, this phenomenon is acoustic feedback. .The presence of acoustic feedback, not only destroyed the sound quality, limiting the expansion of the sound volume of the microphone, the microphone can pick up good sound reproduction; depth will make the system acoustic feedback signal is too strong, which amplifier or speakers burn (burn under normal circumstances .Speaker of the treble head), resulting in losses. .Therefore, the PA system once the acoustic feedback phenomenon, we must find ways to stop, otherwise it will endless troubles. .Whether the elimination of acoustic feedback is a sound engineer to measure an important indicator of skill level, before the advent of the feedback suppressor, sound is often fed by the equalizer pull points (attenuation of the feedback frequency) method to suppress acoustic feedback. .Sound system acoustic feedback phenomenon arises mainly because some frequency sound too strong, too strong frequency of these decay, we can solve this problem, but the drop-down with the equalizer can be difficult to overcome the deficiencies have the following: a .is a sound engineer's listening level is highly demanding, there must be timely feedback after the sound engineer to accurately determine the frequency and extent of feedback from the feedback and immediately accurately the equalizer of this frequency attenuation, which for the less experienced .The sound engineer is hard to do. .Second is the playback sound quality to a certain extent. .Existing 31-band equalizer band width is 1 / 3 octave, some attenuation of acoustic feedback bandwidth required sometimes far less than 1 / 3 octave, this time, many useful frequency component will be .get rid of, so that these frequency sound irreparable loss. .Third, in the adjustment process may be destroyed equipment. .Determine the frequency of ear whistle employer requires a certain time, if this time is too long, the device is in a strong signal to meet the state due to prolonged damage. .Use the feedback suppressor can completely solve the above problem, which can effectively eliminate the feedback, will not affect the playback sound quality, so the advantages are obvious. .Feedback Suppressor is an automated feed point pulling equipment, when there is acoustic feedback, it will immediately discover and calculate its frequency, attenuation, and in accordance with the results of the implementation of acoustic feedback suppression order. .Over the past due to the development of feedback suppressor earlier, technically immature. .In function and design that there are some problems, the use of the effect is not very satisfactory..