Abstract: It is hard to transmit information by using map visualization method among the group of people who have dysopia. In view of this problem, we analyze the mechanism of sound production thoroughly and take the PM_2.5 data of China from January 1 to January 29 in 2016 as the research object. Considering the air pollution level and the number of monitoring sites at different level, we build mapping models between the fundamental music alphabet, the frequency of overtones and the average value of PM_2.5, the volume of overtones and the number of monitoring sites covered by different spatial pollution levels. Then, we obtain the sound parameters, achieve PM_2.5 data sonification by using GarageBand music production software, create PM_2.5 visual dynamic monitoring map by using PowerMap. Finally, we design the PM_2.5 dynamic spectrum map. The research has reference significance for the application of multisensory channel in the process of map visualization.

Key words: data sonification, auditory perception, map visualization, PM_2.5, spectrum map