In order to make the broadcasting system used in railway passenger station adjust the volume adaptively according to the environment,the volume control system of constant-voltage broadcasting speaker is designed by adopting the adaptive technology of signal-to-noise ratio.The paper puts forward the requirements of volume control system,introduces the working principle and architecture of volume control system,the hardware and software of vol-ume controller and upper computer are designed,and the volume control system is tested.The test results show that the volume control system meets the design requirements and can realize adaptive volume control.
关键词
铁路客运站/定压广播系统/音箱/音量控制/自适应控制
Key words
Railway Passenger Station/Constant-voltage Broadcasting Syeten/Speaker/Volume Control/Adaptive Control
维普
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