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Artsound OÜ

ArtSound OÜ Complete Car Soundproofing – What is it and why do you need it?

Complete soundproofing (combined with vibration damping) is a process designed to minimize noise and resonance entering the vehicle. The result is a quieter, more comfortable, and “tighter” driving experience. Furthermore, audio system quality improves drastically because speakers can perform without interference from vibrating door panels and cabin drone.

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Brief Overview of Our Work

Where does noise enter the car?

Vibration and Resonance (body panels): Thin metal panels begin to vibrate at certain frequencies, creating a drone and shake.

Airborne Noise: Wind, traffic, engine, other cars – especially audible on the highway.

Tire and Road Noise: Especially loud with studded tires, on rough asphalt, or gravel roads.

Wheel Arches and Undercarriage: The main source of noise at high speeds and on rough roads.

Noise through Doors: Large surfaces, openings, and technological voids inside the door let noise in.

In the City (lower speeds): You hear more engine noise, other cars, braking/accelerating, potholes, and trams. There are many "short impacts" and vibrations.

On the Highway (higher speeds): Wind noise + tire noise + wheel arch noise dominate. A constant, uniform background drone develops, which is the most tiring factor.

ou can rest more while driving.

Conversation is easier (no need to raise your voice).

Music sounds cleaner, and the bass is controlled.

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Where does noise enter the car?

Doors are critical for both the audio system and general silence because: A door is a large hollow "box" that resonates along with the speaker. A lot of external noise enters through the door. What we do to the doors: Vibration damping on the outer door skin (to stop the metal from droning). Sealing the inner door part / covering service holes if necessary. Sound absorbing/isolating layer (against airborne noise). We always cover the door trim panel with a bitumen/butyl mat layer (adds mass and calms the plastic). Additionally, we install a softer damping material between the panel and the metal to reduce high-frequency noise and create a "tight" contact – this eliminates panel rattles and squeaks. Where needed, soft tape is applied to prevent plastic friction squeaks.

The floor transmits a lot of road vibration and low-frequency "rumble" into the cabin.

Typical solution:

First layer: Vibration damping (to "calm" the body).

Second layer: Sound isolating/absorbing material (against airborne and background noise).

Result: Noticeably quieter ride, less fatiguing low-frequency noise.

The roof is a large, thin surface. Particularly noticeable: Wind noise on the highway. "Drumming" sound during rain.
f the goal is a truly quieter car, wheel arches are crucial, as they transmit a large portion of tire and road noise. Result: Lower background noise on highways and rough asphalt; the "whine" of studded tires is reduced.
Additional noise often comes from the rear (wheel arches, undercarriage, trunk lid/plastic resonance). This is also important if the car has a subwoofer or you plan to install one. Result: Less "drone," the subwoofer works more essentially, fewer rattles and resonance.
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Why use multiple layers?

One material cannot solve everything because different problems require different types of layers:

  • Vibration Damping = Reduces metal oscillation and resonance (body “drone”).
  • Sound Isolation/Barrier = Helps against airborne noise (wind, tires, traffic).
  • Sound Absorption = “Eats” echo and high-frequency noise, softening the cabin acoustics.
  • Decoupling/Soft Layer = Helps against rattles and plastic friction.

This specific combination creates a “premium” feel: the car isn’t just a bit quieter – it feels more solid and higher quality.

What materials do we use? We use high-quality automotive-specific materials (vibration damping + sound barrier + sound absorption), selecting precise layers based on the car, scope of work, and goals. Some areas need stronger vibration damping, others need more sound barrier or soft absorption – there is no “one recipe for all.”

Why is this crucial for the audio system? A good sound system isn’t just expensive speakers and an amplifier. If the doors/chassis “play along,” then:

  • Bass becomes muddy.
  • Doors and plastics start to vibrate.
  • The soundstage disappears; sound becomes unclear at higher volumes.

With soundproofing:

  • The speaker operates in a stable environment.
  • Mid-bass becomes punchier.
  • The entire sound is clearer, even at lower volumes.

Summary: What does the client actually feel?

  • Less tiring background noise (especially on the highway).
  • Easier to converse and enjoy the drive.
  • The car feels “tighter,” more solid, and higher quality.
  • Audio system sound improves noticeably.
  • Fewer rattles, resonance, and clatter.

If desired, we can also perform partial work (e.g., only doors + wheel arches) or a full package. A complete solution always yields the most consistent result because noise isn’t left entering from “just one place.”