| 摘要 |
PURPOSE: A conference system equipped with an audio power amplifier is provided to facilitate an installation of a temporary conference hall by a conference system with a built in audio power amplifier. CONSTITUTION: A conference system equipped with an audio power amplifier includes a plurality of microphone units, a main controller(100), and a cable for connecting microphone units to the main controller. The main controller includes a key input part, a display part, an input/output processor, a preamplifier, a public address amplifier, a controller, and a power supply. The key input part(120) is used for generating an electric signal according to an input signal of a key input. The display(160) is used for converting the electric signal to a video signal in order to display an operating state. The input/output processor(150) is used for controlling an inputting process and an outputting process of the electric signal. The preamplifier(142) is used for pre-amplifying the electric signal according to a predetermined standard. The public address amplifier(144) is used for amplifying an output signal of the preamplifier. The controller(110) is used for controlling each operation of the key input part, the display part, the preamplifier, and the public address amplifier and applying control signals to the microphone units through the input/output processor. The power supply(130) is used for supplying power to each of components.
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