What is the Principle of Car Sound Insulation?
2 Answers
The principle of car sound insulation is: 1. Using damping materials to dampen and seal the car's sheet metal, improving the installation environment of speakers and restoring the sound pressure and sound quality of car audio; 2. Applying damping and sound insulation materials to the car to reduce noise transmitted by the sheet metal structure, enhancing driving comfort. Methods for car sound insulation include: 1. Applying sound-absorbing foam materials under the engine hood; 2. Installing sound-absorbing cotton materials in the trunk, at the bottom of the trunk, and on the wheel arches on both sides of the trunk; 3. Installing sealing strips inside the doors; 4. Installing professional damping plates in areas prone to noise; 5. Installing sound-deadening pads and moisture-proof sound insulation cotton on the central chassis and rear trunk floor; 6. Adding sound insulation cotton throughout the car body; 7. Replacing tires with better noise-canceling properties.
My previous car was too noisy, and I always felt exhausted after driving on the highway. The principle of sound insulation is actually quite simple: the key is to use materials to absorb or block sound. Sound-absorbing materials, like thick soundproofing cotton, absorb sound wave energy, making the noise disappear; the sound insulation layer acts as a barrier, preventing external noise from entering the car; damping treatments are applied to the car's metal body to reduce noise caused by vibrations; and sealing strips fill the gaps around doors and windows to prevent wind and noise leaks. After I installed these myself, the interior became much quieter, and even the music sounded clearer. I recommend fellow car enthusiasts start with the doors and floor, choosing eco-friendly materials instead of going for cheap options, as it can also improve long-distance comfort.
