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为实时监控多套电视节目伴音,作者设计制作了一款伴音屏幕显示装置,加装于电视机内,可以,同时监视多套电视节目,使用3年多来,效果很好。一、工作原理该显示器将伴音电平dB值以彩条形式显示于屏幕上,相当于屏幕上开一个窗口。该装置由行、场控制信号形成电路、伴音电平转换电路
In order to monitor multiple TV programs in real time, the author designed and produced a sound screen display device, which can be installed in a TV set to monitor multiple sets of TV programs at the same time. After three years of operation, the effect is very good. First, the working principle of the monitor will sound level dB value in the form of color bars displayed on the screen, the equivalent of a window on the screen. The device consists of lines, field control signal forming circuit, sound level conversion circuit