
Custom-designed commercial acoustics
We are aware that business leaders and office design project managers often feel quite alone when it comes to acoustic design.
Our business goes beyond simply supplying commercial acoustic products. Through a personalized study , we address their acoustic challenges and guarantee results.
Preliminary visit
Initially, Siléopta’s acoustic experts visit your client’s premises to characterize the acoustic response of the premises .
This allows us to define the initial acoustic framework and to deduce the objectives.
Depending on the application, they are able to quantify:
• A sound level at a specific location
• An acoustic objective at a distance from a machine
• A level of acoustic comfort in open space
We use the latest technologies in acoustic measurement:
• Class 1 sound level meters, qualified as “expert”
• Vibration measurement chains
• Certified calibrators
• Anemometers
• Noise generators

An acoustic result guaranteed by on-site measurements
Siléopta makes a commitment to your clients regarding specific, quantifiable acoustic objectives:
• Reverberation time
• Ambient level measurement
• Background noise measurement
These acoustic measurements can be carried out before and after acoustic treatment, in strict compliance with the applicable regulations:
• ISO 3382 series measurement standards
• ISO 717 series standards for airborne and impact sound insulation measurements
• Characterization of ambient noise levels in rooms with users in use.
Acoustic calculations using software
Our design office is equipped with the best industry-specific software as well as tools enabling in-depth expertise:
• Software for processing and analyzing measurements adapted to the service sector
• 3D acoustic modeling software
• Comprehensive database on acoustics, vibration and aerodynamics
• Library listing noise typologies
• Spreadsheets developed in-house for our clients
Research and implementation of solutions tailored to your environment
These measures allow us to offer your clients the solutions best suited to their objectives. We also consider all project parameters:
• Ergonomics
• Security
• Budget
• Maintenance
• Functional character
AllSfär, experts in commercial acoustics, create acoustic solutions that exactly meet your client’s needs. AllSfär’s history and expertise are deeply rooted in understanding two worlds: acoustics and the interior architecture of living spaces. Technical knowledge of acoustics combined with the know-how of manufacturing acoustic solutions forms the foundation of Siléopta.
Want to explore acoustic solutions that are tailored to your next design project? Take a look at our full range of acoustic solutions here or give us a call on +44 (0)20 3889 9888, email us at hello@allsfar.com or fill in our contact form on our website here.
T: +44 (0)20 3889 9888
AllSfär © 2026
Paris | St Etienne | Alès
AllSfär © 2026
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