Sprinkler playing music puzzle

Walking on the road, we often awaken by the roaring vehicles, not only shocked by the speed of the car, but also shocked by the dynamic music, some ordinary cars playing popular songs, some like a giant truck , with rumbling "music", but if it is a sprinkler, presumably will play "Jasmine", "Oriental Red", "Happy Birthday to you" and other unpopular songs, and usually the playback volume is also very large, almost It is like worrying that passers-by are sleepy, and they want to awaken the passers-by, but think about it. Why does the sprinkler play music ? And why is it so loud?

The answer can be uncovered from the following perspectives:

1, when the sprinkler works, the side spray water can spray very far, the wide road can be spilled on the road is full of water, and splashes of mud, play music, but also to a large volume, mainly to Remind pedestrians to avoid vehicles in time so as not to be splashed by water and affect travel mood.

2. Sprinklers do not directly use horns to remind, but use music to remind, especially in big cities. If you directly use megaphones, noise pollution will occur, affecting people's physical and mental health.

3. The music tracks played by the sprinkler are set in advance, and are not easily changed. They cannot be randomly selected by the staff. This is helpful for quick discrimination. A pedestrian is a sprinkler, because only those who have been playing those songs are only sprinkling water. Car.

4. From the analysis of the type of music played, it is generally a positive way to broadcast red songs and other positive emotions such as patriotism and the enterprising spirit of reforms and opening up. Passing social positive energy can also be a unique way of cultural inheritance.

5. From the point of view of the music itself, playing music can not only activate the atmosphere of the city, drive the emotions of pedestrians, and play a good role in fostering sentiment.

Now we all know why the sprinkler needs to play music and tune up to loud volume. Don't be surprised to see the next time you see the sprinkler playing music!

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