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当我们观赏电视节目遇到某些爆棚场面时,往往需要较大的音量加以支持方能达到惊心动魄的效果。但是,电视机中小小的扬声器却难以胜任。笔者试用一市售的有源音箱与电视机的伴音电路组合,仅凭遥控器上的音量按键便可实现自动扩音。有关电路见图。
When we watch some of the scenes exposed TV shows often require a larger volume to be supported in order to achieve the thrilling effect. However, the small speakers on the television are not competent. I try a commercially available active speakers and TV sound circuit combination, only the volume buttons on the remote control can be automatically amplified sound. See the circuit diagram.