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在各种场合的扩声工作中,音箱出现正反馈啸叫声会比较麻烦。啸叫声的出现,轻者破坏现场气氛,影响演出效果;重者则可能会损坏器材。因此,控制啸叫一直是扩声工作中非常关键的环节。在扩声工作中,经常会使用反馈抑制器对声反馈进行抑制。本文通过对声反馈产生的原因及控制方法进行分析,并对日常所使用的反馈抑制器工作原理分析,探讨在多音源环境中使用反馈抑制器的方法。
Sound reinforcement work in various occasions, the speaker feedback feedback howling will be more trouble. The whistling sound appears, the light destroys the scene atmosphere, affects the performance effect; The heavy person possibly may damage the equipment. Therefore, howling control has been a very crucial part of the sound reinforcement work. Acoustic feedback is often suppressed using feedback suppressors during sound reinforcement. This paper analyzes the causes and control methods of acoustic feedback, and analyzes the working principle of feedback suppressors used daily, and discusses how to use feedback suppressor in multi-source environment.