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.
Railway Passenger StationConstant-voltage Broadcasting SyetenSpeakerVolume ControlAdaptive Control
万方数据
维普
