Do you have questions ?
In an office the problem is rarely “noise” in general. It is usually one of three things:
Each is measured with a different quantity and solved with a different measure. That is why we start with measurement, not with panels. We measure, model the options, make the panels and screens in our own workshop and install them with our own team.
We measure speech propagation according to EN ISO 3382-3:
The standard gives D2,S ≥ 7 dB and Lp,A,S,4m ≤ 48 dB as good values. ISO 22955:2021 “Acoustics — Acoustic quality of open office spaces” sets target values by type of work – a call centre and a team of programmers have different needs.
An acoustic ceiling on its own is rarely enough. Speech travels directly over the desks, so the solution is usually vertical: screens of the right height with sound absorption, plus the layout of the teams.
When a conversation in a private office or meeting room can be heard outside, we measure the field sound insulation – R′w or DnT,w to EN ISO 16283-1. Bulgarian Ordinance No. 4 of 2006 requires R′w ≥ 47 dB for walls between offices, meeting rooms and corridors.
Most often the weak point is not the wall itself but:
So we first find the sound path and only then choose the measure.
In a meeting room we measure the reverberation time to EN ISO 3382-2. When it is high, speech becomes blurred and in video calls the microphones also pick up the reflections. The solution is sound-absorbing panels on the walls and ceiling – made to size and colour in our own production. When the wall should also carry an image – a portrait, a logo or a landscape – we make acoustic walls with print design over the whole wall.
Bear in mind that panels reduce the echo in the room but do not stop sound reaching the next room. These are two separate tasks, and often both are needed.
Will wall panels stop the noise from the neighbouring team? Not entirely. They reduce reflected sound. Direct speech between desks is stopped with screens and with the layout.
Do we need to replace the furniture? Not necessarily. At EGT Digital we suspended PET screens above the existing dividers, without removing anything.
What do you need for a quote? A floor plan, the number of workstations and a few photos – to [email protected] or call 0883 400 061.
Submit an inquiry about your issue by contacting us via phone or email. It is recommended to include photos and measurements of the space.
Our engineers carry out a site visit – free of charge for business premises. We look at the space and how it is used, and propose an approach to the solution.
We measure using the methods of EN ISO 3382 (reverberation, speech intelligibility), EN ISO 16283 (sound insulation) and others – as an engineering assessment. When an accredited test report is needed, we arrange it through an accredited inspection body.
We measure the sound absorption of the surfaces on site with the Sonocat intensity probe and build a computer model of the office (Treble). We calibrate the model with the measured values and compare the options before any materials are bought.
The acoustic panels and screens are made in our own workshop – to size and colour. We deliver and install them with our own team.
When the work is carried out by another contractor, we check the quality of the materials used and that they are installed correctly.
After installation we measure again to check the result achieved – whenever the site allows.
Our engineers carry out a site visit – free of charge for business premises. We look at the space and how it is used, and propose an approach to the solution.
We measure the sound absorption of the surfaces on site with the Sonocat intensity probe and build a computer model of the office (Treble). We calibrate the model with the measured values and compare the options before any materials are bought.
When the work is carried out by another contractor, we check the quality of the materials used and that they are installed correctly.
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