The design of a speech sound AF amplifier met the needs of language learning system is described. 介绍了满足语言学习系统要求的语音放大器的设计。
Howling not only put speech and performing not smoothly, but also the intense howling may burn the amplifier or speaker system, or even damage the human ear. 啸叫声不但使讲话、表演无法顺畅进行,而且剧烈的啸叫还可能会烧毁系统中的放大器或扬声器,甚至损伤人耳。