At present, there are three main methods of automobile sound insulation: eliminating sound source, blocking passage and absorbing penetration. In terms of "eliminating the source", Song Pro mainly reduces engine noise, thus optimizing the appearance and reducing wind noise, improving suspension and tire parameters and reducing road noise.

"Blocking access" and "absorbing penetration" refer to blocking and absorbing noise through the body structure and sound-absorbing cotton, thus reducing the noise inside the car. In the design, more than 200 digital-analog tests, more than 65,438+000 acoustic material designs and 26 cavities were blocked. It is said that the original sound-absorbing cotton area of Song Pro is 4m2, which is 20% higher than the average level at the same level.

Therefore, the owner of Song Pro described "the price of 65,438 438+ 10/00000 yuan, and the noise reduction of 300000 yuan". Dr. Zhang Qiang, vice president of the French NVH Association, comprehensively optimized the NVH of the whole vehicle, and the NVH of the whole vehicle was as low as 35.9 decibels, which was smaller than usual at home and in the office.

In terms of sound insulation and noise reduction, Song Pro has really reached the leapfrog level, and the feeling of quiet space has achieved 300,000 effects compared with the price of Tiguan L, which is called black technology ~