For effective noise isolation, material upgrades can be combined with strategic design adjustments to address on-board noise (e.g. calls, phones) and impact noise (e.g. typing, vibration of equipment). The following are structured solutions based on practical applications and material performance:
1.Wall & Partition Enhancements
Add Dense Soundproofing Layers:
Install polyester fiber insulation panels 3 -5cm thick (density ≥50kg/m3) on the partition wall. These panels absorb medium-frequency to high-frequency sounds, such as speech, and reduce reverberation. For example, a 50kg/m3 panel can achieve an NRC of 0.85, which means it absorbs 85% of sound energy.
Alternatively, high-volume vinyl (MLV) (2-3 mm thick, (2-3mm thick, 2-3kg/m2) is used as a caution layer behind existing partitions. MLVs block out low-frequency noise (for example, bass of a speaker) by adding mass without adding volume.
Seal Gaps:
Apply acoustic sealant (e.g. silicone base) along the edge and seams to prevent sound leakage. Even small gaps can reduce隔音 insulation (sound insulation) by up to 50%.
2.Ceiling & Floor Treatments
Ceiling Absorption:
If cubicles have open ceilings, they can be hung from fiberglass soundproofed ceiling tiles (NRC ≥0.90) or fitted with soundproofing panels to reduce overhead noise (e.g. footsteps, HVAC sounds).
For enclosed compartments, perforated acoustic fabric are covered in 5cm thick rock cotton (density ≥80kg/m3) on the ceiling to absorb sound while maintaining aesthetics.
Floor Damping:
rubber floor mats 10mm thick (NRC ≥0.15) under tables to reduce impact noise of chairs and footsteps. To improve performance, composite mats with rubber base and foam surface were used (NRC ≥0.30).
If permitted, carpet tiles (pile height ≥10mm) with 3mm MLV at the bottom should be installed to block air and impact noise.
3.Door & Window Upgrades (if applicable)
Door Sealing:
If the compartment has a door, upgrade to a solid door (STC rating ≥35) and install an automatic bottom seals (such as a drop-down seal) to prevent the valve opening from leaking sound.
Add a soundproof door seal (e.g., neoprene gaskets) around the door frame to form a seal.
Window Treatments (glass partition):
Apply sound-proof window film (e.g. damping layer) to reduce sound transmission through glass. For example, 3mm laminates can increase STC by 5-10 points.
Overweight curtains of velvet or suede (≥500g/m2) can also be hung to absorb sound and block drafts.
4. Furniture & Decor Strategies
Strategic Furniture Layout:
Place bookshelves, filing cabinets or tall plants along noisy walls as an extra sound barrier. For example, a 1.8-metre-high shelf full of books can reduce sound transmission by 3-5dB.
Use upholstered furniture (e.g. sofas, armchairs) near partitions to absorb sound and soften reflections.
Desk & Equipment Isolation:
Place desk mats (such as corks or rubber) under your keyboard and mouse to reduce tapping noise.
Use shock absorbers (such as rubber feet or foam pads) to isolate noisy equipment (such as printers and speakers) to minimise structural noise.
5. Advanced Solutions for High Noise Environment
Modular Soundproofing:
Install a separate sound barrier (e.g. 1.2m high and 60cm wide) and fabric cover with a core of rock cotton or foam. They can be positioned to create "sound zones" in cubicles.
For example, the 50mm rockwool screen has a STC rating of 25-30 and a voice reduction of 15-20dB.
White Noise Machines:
Use a white noise generator (e.g., a small desktop device) to block out noise with a consistent background. This is particularly effective for improving voice privacy in open-plan offices.
Cost-Effective Quick Fixes
DIY Acoustic Panels:
Create affordable panels by wrapping 5cm thick fiberglass insulation panels (such as R-13 cotton strips) in breathable fabrics (such as linen or sound-absorbing cloth) and installing them on walls.
Stop-block draft:
Use a door drain plug (such as a cloth tube filled with sand or rice) to stop sound leaks the bottom of the door or partition.
