The invention belongs to the technical field of public broadcasting equipment, and aims to provide a rail transit public broadcasting system capable of inhibiting howling and a working method thereof. The system comprises a handheld station, an audio transmission module and a power amplifier host which are connected in sequence, the audio transmission module comprises an interphone module, an anti-howling module and an audio acquisition and transmission module which are connected in sequence, the interphone module is connected with the handheld station, and the audio acquisition and transmission module is connected with the power amplifier host; wherein the interphone module is used for receiving an audio signal sent by the handheld station and sending the audio signal to the anti-howling module; and the anti-howling module is used for carrying out anti-howling processing on the audio signal to obtain an audio signal after anti-howling processing, and then sending the audio signal after anti-howling processing to the power amplifier host through the audio acquisition and transmission module, so that the power amplifier host plays the audio signal after anti-howling processing. The system is low in cost, small in power, high in stability and capable of avoiding squeal.
本发明属于公共广播设备技术领域,其目的在于提供一种可抑制啸叫的轨道交通公共广播系统及其工作方法。其中的系统包括依次连接的手持台、音频传输模块以及功放主机;音频传输模块包括依次连接的对讲机模块、防啸叫模块以及音频采集和传输模块,对讲机模块与手持台连接,音频采集和传输模块与功放主机连接;其中,对讲机模块用于接收手持台发送的音频信号,并将音频信号发送至防啸叫模块;防啸叫模块用于对音频信号进行防啸叫处理,得到防啸叫处理后音频信号,然后将防啸叫处理后音频信号通过音频采集和传输模块发送至功放主机,以便于功放主机播放防啸叫处理后音频信号。本发明的成本低,功率小、稳定性强,同时可避免产生啸叫。
Rail transit public broadcasting system capable of suppressing howling and working method thereof
一种可抑制啸叫的轨道交通公共广播系统及其工作方法
2024-03-01
Patent
Electronic Resource
Chinese
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