Adaptive volume controller and volume control method thereof

Abstract

The invention discloses an adaptive volume controller and a volume control method thereof. The adaptive volume controller comprises a noise detection circuit, a broadcast determining circuit, a processing circuit and a digital potentiometer, wherein the noise detection circuit is used for collecting noise information, the broadcast determining circuit is used for determining a broadcast gap according to an output signal of a broadcast front amplifier output port, the processing circuit is connected with the noise detection circuit, the broadcast determining circuit, and the digital potentiometer, and the processing circuit is used for controlling the noise detection circuit to collect current noise information when the broadcast determining circuit determines that a broadcast gap exists, and controlling, according to the current noise information collected by the noise detection circuit, the digital potentiometer to output an audio voltage for driving a speaker. The volume of the speaker can be adjusted automatically according to the size of the noise, so that people feel more comfortable in hearing.

Description

technical field [0001] The invention relates to the technical field of automation control, in particular to an adaptive volume controller and a volume control method thereof. Background technique [0002] With the acceleration of the modernization of social transportation infrastructure, public broadcasting systems are installed in public hall environments such as stations, docks, and airports. The broadcasting system has become an important medium for information such as shifts and notices. However, the noise in the hall is an irregular combination of sounds of different frequencies and intensities. The situation is complex and changeable. For example, the noise of passengers, the start of locomotives, and large-intensity noises such as entering the station will interfere with the broadcasting in the hall. As a result, passengers cannot hear the radio information clearly. If the volume of the radio is turned on for a long time, it will cause hearing discomfort. It is not re...

AI Technical Summary

Problems solved by technology

However, the noise in the hall is an irregular combination of sounds of different frequencies and intensities. The situation is complex and changeable. For example, the noise of passengers, the start of locomotives, and large-intensity noises such as entering the station will interfere with the broadcasting in the hall. As a result, passengers cannot hear the radio information clearly. If the volume of the radio is turned on for a long time, it will cause hearing discomfort. It is not realistic to manually adjust the volume in real time

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