Real recordings
12 genuine scenarios from offices, homes and streets. No synthetic or studio-processed sound.
Soundproofing demo: hear how silence works — before you buy
We recorded real office noise and rebuilt the isolation curve of Silentbox booths right in your browser. Pick a scenario, switch booths — and within seconds you'll hear exactly what 35 decibels of isolation buys you.
Listen to the demoPut on headphones — the demo is most accurate that way.
Sound Lab · Try it right now
Hear the 35-decibel difference
Pick a scenario, press Play — then step inside a cabin to hear the same situation behind 35 dB of Silentbox Premium isolation.
For an accurate demo, listen with headphones.
2Pick a cabin — hear the difference
No cabin · Room full of people65 dB
125Hz
250Hz
500Hz
1 KHz
2 KHz
4 KHz
30 dB — a whisper50 dB — a quiet street65 dB — normal conversation85 dB — a metro train
What decibels really mean
Decibels are a logarithmic scale: every 10 dB sounds roughly twice as loud. So "minus 35 dB" isn't a third of the noise — it's a completely different acoustic reality.
20
A whisper nearby
30
Library reading room
40
Quiet office
50
Moderate rain outside
60
Normal conversation
70
Busy street
80
Vacuum cleaner at 1 m
90
Truck passing by
An open-space conversation is about 65 dB. Inside a Premium booth it sounds like roughly 30 dB — quieter than a library reading room.
Inside a sound insulation booth: five layers between you and the noise
A Silentbox wall is a multi-layer sandwich where each layer handles its own part of the spectrum: metal reflects, membranes damp vibration, and the air gap breaks the sound bridge.
- 01Outer shell
A rigid steel and laminated-board frame reflects most of the sound energy.
- 02Acoustic foam
A porous layer absorbs mid and high frequencies — exactly where human speech lives.
- 03Air gap
Breaks the mechanical bridge between layers: vibrations can't pass through directly.
- 04Damping membrane
A heavy layer that kills low frequencies and structural resonances.
- 05Inner panel
The finishing acoustic layer evens out the sound inside the booth — no echo.
Isolation by frequency
The wall works asymmetrically: high frequencies are damped almost entirely, low ones less so. That's why voices are the first thing to disappear.
Premium · −35 dBLite · −25 dB
How the online soundproofing demo works
Reproduced to ISO 11957
A Web Audio algorithm reproduces the certified insulation curve: up to 35 dB for Premium and up to 25 dB for Lite.
Hear the difference
Play the demo at a volume that suits you and judge the difference between «before» and «after».
Headphones recommended
For the most accurate impression, use headphones or a quiet room.
Frequently asked questions about Sound Lab
We use real noise recordings and filters tuned to the isolation curve measured to ISO 11957. The exact sound depends on your headphones and room, but the scale of the difference is exactly what you hear in the demo.
Sound insulation reduces the noise level — it doesn't switch sound off. A 65 dB conversation sounds like roughly 30 dB inside a Premium booth: quieter than a library. That's more than enough for focused work or a call.
The Premium series has a five-layer wall and ~35 dB isolation — a conversation outside is practically inaudible. Lite is a lighter build with ~25 dB isolation at a noticeably lower price. You can compare both series by ear right in the demo.
Yes. Book a demo — we'll show you the booths live, let you measure the noise level with your own phone and compare the models side by side.