London. Jarvis Dolan is a charismatic host of a radio show named "The Grim Reality", about news and actuality. Loudmouth, fun and ruthless in his speeches and ments, Jarvis is the most important radio star of the moment, entertaining the audience throughout the early morning with his intelligent programs on hot topics. Previous the job, Dolan is required by his boss Norman Burgess to have a brief talk about the fate of the program by the recent poor ratings, that reporting Dolan to accept to his former partner, Andrew Wilde, as co-host, in an attempt to improvement the show. Going they two to the studio, Wilde meets Dolan's assistants, Anthony and Claire, who work making the show behind the micros. But when Dolan tries to start the program while he waits for Wilde, who had to go out a little before to back more later, he finds suddenly trapped by the circumstances: two masked men have assaulted the radio station at gunpoint and kidnapped Anthony and Claire, making him to keep the ...
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fǎn kuì 泛指发出的事物返回发出的起始点并产生影响 信息反馈 反馈(feedback)又称回馈，是控制论的基本概念，指将系统的输出返回到输入端并以某种方式改变输入，进而影响系统功能的过程，即将输出量通过恰当的检测装置返回到输入端并与输入量进行比较的过程。反馈可分为负反馈和正反馈。前者使输出起到与输入相反的作用，使系统输出与系统目标的误差减小，系统趋于稳定；后者使输出起到与输入相似的作用，使系统偏差不断增大，使系统振荡，可以放大控制作用。对负反馈的研究是控制论的核心问题。 ①把放大器的输出电路中的一部分能量送回输入电路中，以增强或减弱输入讯号的效应。增强输入讯号效应的叫正反馈；减弱
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