In airport departure halls with ceilings tens of metres high, why are boarding announcements always so muffled? In minimalist, open-plan offices, why is it always so noisy that it’s hard to concentrate? On long, narrow and deep underground platforms, why is the echo when a train pulls in so irritating?
Modern architecture makes extensive use of glass, stone and metal; whilst striving to create a visually striking effect, this often comes at the expense of acoustic comfort. High reverberation and low intelligibility are becoming an intractable ‘acoustic challenge’ in large public spaces.
Today, Silence Tech® sound-absorbing non-woven fabric offers the perfect solution with its revolutionary approach.
Traditional sound-absorbing materials are often bulky and take up space, whereas Silence Tech® sound-absorbing non-woven fabric perfectly combines acoustic performance with extreme lightness and thinness:
As thin as a cicada’s wing: the core is just 0.2 mm thick!
As light as a feather: it weighs just 65 g/m²!
It requires no complex framework and does not alter the original architectural design; it fits perfectly onto ceilings, walls or columns, much like an ‘acoustic skin’, achieving a truly ‘invisible acoustic retrofit’.
According to the latest test report from Intertek , an internationally recognised testing organisation, Silence Tech® sound-absorbing non-woven fabric (with a perforated aluminium panel backing system) demonstrates outstanding acoustic performance:
Noise Reduction Coefficient (NRC) of up to 0.70: meets the national Class II standard for high-efficiency sound absorption, capable of absorbing approximately 70 per cent of incident sound energy in the mid-to-high frequency range.
Precisely targets the ‘golden frequency range for human voices’: within the core vocal and broadcast frequency range of 250 Hz to 5,000 Hz, the sound absorption coefficient remains stable between 0.60 and 0.78 (peaking at 0.78 at 500 Hz).
What does this mean? It can effectively eliminate the ‘reverberation tails’ that interfere with speech, significantly reducing the room reverberation time (RT60) and making the direct sound more prominent, thereby significantly improving speech intelligibility (STI).。
Challenges: The large volume and high ceilings result in significant echoes; during peak times, background noise is extremely loud, making it difficult for public address announcements to be heard clearly.
Silence Solution: When installed over large areas on ceilings or walls, this system rapidly attenuates mid- to high-frequency reflected sound, eliminating the ‘humming’ resonance often found in large halls. Even during peak periods, it ensures that flight and train announcements are clear and distinct, reducing passenger anxiety and enhancing the premium ‘serene’ experience at the hub.
Problem: Long, narrow, hard-surfaced spaces are highly prone to reverberation; the noise generated by trains entering and leaving the station is loud, making safety announcements difficult to hear.
Silent Solution: Its ultra-thin design of 0.2 mm makes it perfectly suited to the limited headroom on underground station platforms. It effectively disrupts sound wave reflection paths, improving the signal-to-noise ratio of public address announcements and ensuring that emergency and routine instructions are clearly heard by passengers.
Problem: Open-plan offices lack acoustic privacy; excessive reverberation in meeting rooms makes video conferences difficult to hear and leads to fatigue during meetings.
Silence Solution: Absorbs reflected sound from conversations, reduces the distance sound travels and enhances staff concentration; optimises the acoustic environment in meeting rooms, ensuring that both face-to-face conversations and online meetings sound crisp and clear.
Design flexibility: With a thickness of just 0.2 mm, it has virtually no impact on the original surface level and can be seamlessly applied to the rear of perforated metal panels, plasterboard, glass or timber, perfectly complementing modern minimalist aesthetics.
Extremely simple to install: the material is flexible, easy to cut to size and extremely lightweight, significantly reducing the difficulty of working at height and the load on the structure.
Environmentally friendly and durable: no risk of fibre shedding, does not harbour bacteria, and meets the stringent fire safety and environmental requirements of large public spaces.
💡 Professional advice from our acoustic consultants: For environments such as high-speed rail stations and underground stations, where there is a significant amount of low-frequency equipment noise, we recommend leaving a 50mm–100mm cavity behind the panels during installation. According to the principles of acoustics, cavity resonance will significantly enhance the system’s sound absorption performance in the 100Hz–250Hz low-frequency range, achieving perfect noise reduction across the entire frequency spectrum!
Good architecture should not only be pleasing to the eye, but also to the ear. Silence Tech® sound-absorbing non-woven fabric, at a mere 0.2mm thick, delivers impressive performance with an NRC of 0.70. It transforms noise into tranquillity and restores clarity to communication.
