Popular science about car snails and basin-shaped horns


Why do some Japanese car horns make a "didi" sound, while some European and American car horns have a "beep" sound and the volume is louder?


What I want to say today is that whether the horn sounds "didi" or "dudu" has nothing to do with whether the vehicle is Japanese or European and American.


Whether it is "DiDi", "Dudu", or "Papa" and "Benben", the existence of different sound types is mainly due to the different types of speakers used.


Different types of speakers


Car horns include electric horns and air horns. Generally, the horns of large vehicles are louder and air horns are used. The cars use electric horns. Electric horns are further divided into basin horns and snail horns.


The basin-shaped horn is the most common horn. The price is relatively cheap and the volume is relatively small. It is mostly used in Japanese and Korean models. The sound is clear and loud. The sound is: "DI, DI~~~", which penetrates strongly.


The basin-type horn often emits a "di-di" sound, and the same is true for BMW, but the craftsmanship is excellent, and the sound can be far and deep, and it sounds like "di-wa--" or "du-wa--".


Relatively speaking, snail horns are more advanced and more expensive, and are mostly used in European and American models. The snail horn looks like a snail, so it is called a snail horn. It is a snail-shaped acoustic cavity added to the ordinary horn. Its scientific name is "high-bass horn". . The sound of the snail horn is: "BA, BA~~~~~~~~~" The sound is loud and full, which allows the other driver to estimate the distance and direction of the vehicle that issued the warning sound, which is effective when warning fast approaching drivers. better.


That is to say, the snail horn is like adding a loudspeaker, the sound has a better diffusion effect, and the scattering area is large. Originally it was the sound of "DiDi", but due to the swirling airflow, it produced the sound of "Diwa-" or "Diba-" or the single-syllable "Pa--".


So, whether the horn sounds "didi" or "dudu" has nothing to do with whether the vehicle is Japanese or European and American.


The characteristics of the sound of the car horn are only related to the type, shape, power and structure of the sounding unit of the battery. Low-cost and cheap speakers are usually small and dry, while high-cost and expensive speakers are loud and crisp.


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