First answer: yes. Then, ANC technology is regarded as a spontaneous technology of Bose, but when used in cars, it is a different conclusion. To put it bluntly, ANC in cars is used to reduce the low-frequency noise of the engine. It sounds very scary, but in the entire car, it is a It's a very cheap solution, but it's just a big boast. In other words, car ANC and headphone ANC are two concepts