汽车鸣笛声适宜响度的确定

s the most accessible hearing warning signal in our daily life, car horn sound should be designed to meet the Ergonomics requirements of the acoustic warning, and it also needs to consider its possible impact on the audience, which has an important significance on city sound environment and traffic safety. Objective: The purpose of this study is to determine the appropriate siren loudness of different background noise intensity, thus improving the car horn sound pressure level, which can not only keep the original alarm function, and will not cause the audience\'s negative emotions, to provide more human reference data for the design of new car horn. Method: Experiment 1 will begin with the subjective sound comfort to investigate the loudness range of the horn which is comfortable for listeners under different background noise intensities. Experiment 2 is to verify the different loudness of car horn sound that can cause a alarm effect, determining the minimum loudness of car horn sound with an alarm effect as the lowest value of the proper loudness. Results: （1）In the low background noise, the proper loudness of car horn sound is between 75 and 80dB.（2）In the high background noise, the proper loudness of car horn sound is between 80 and 85dB.