And then the building was commissioned for use. It turned out that the installer left a micro-gap at the ceiling, the profiles are directly adjacent to the structural columns, and the electrical boxes were installed within the wall opening. The actual result dropped to R'w = 42 dB. The effect? In the representative conference room, every word from the adjacent office can be heard.

The measurement of airborne sound insulation verifies what no sales brochure can predict: the quality of workmanship of the finished building, its installation defects, and hidden sound transmission paths (so-called flanking transmission). At Nyquista we do not take anyone's word for it – we verify the physics.

Rw vs. R'w – why is field measurement necessary?

Many investors believe that purchasing a material with a high parameter Rw (laboratory index) solves the issue. This is the most expensive mistake in acoustics.
The actual sound insulation in a building is the index R'w (field result). It is always lower than the laboratory value because sound in the real world seeks the easiest path – escaping through ventilation, slabs, raised floors, and leaks. Field measurement measures what the user actually hears. Designing insulation solely on the basis of product datasheets is asking for trouble.

Who is this test intended for?

We provide hard evidence for those who are responsible for the investment:

• For the Developer and Investor: You officially confirm that the building meets the requirements of PN-B-02151-3 and qualifies for acceptance. You gain a solid argument in the event of tenant claims. You identify defects before the budget is closed, before repair costs become astronomical.

• For the Architect and Interior Designer: You verify whether your partition concept worked in practice. The report protects you from investor claims and provides a basis for assessing the quality of the general contractor's work. If the result deviates from the standard – you know exactly where the deviation lies.

• For the Facility Manager: You respond to tenant complaints such as: "there is no confidentiality in this office." Our measurement identifies the problem and points to a precise corrective solution. No more sticking random foam panels that still will not stop the transmitted speech.

When is it worth calling our engineers?

Sound insulation measurements are essential at strategic points in the building lifecycle:

1. Technical acceptance: Before handing over the building (or its redevelopment) for use.

2. Certification: Completing the documentation required by BREEAM, LEED, or WELL systems.

3. Complaint diagnosis: When privacy is lacking in offices, hotels, medical practices, or law firms.

4. Repair verification: After an acoustic intervention has been carried out, to confirm its effectiveness.

How do we work? (Technology and Standards)

Our methodology is pure engineering. We conduct the tests using Class 1 precision equipment (regularly calibrated).
We strictly base our procedures on ISO 16283-1. We perform a full band analysis over a wide range from 50 to 5000 Hz, determining the key indicators R'w and DnT,w. We analyze not only the wall itself, but also look for potential flanking transmission paths.

The report that solves problems

The culmination of our work is a comprehensive engineering document. What do you get? A summary of measurement results, assessment indicators, professional acoustic interpretation, and an assessment of compliance with normative requirements for the given room class. Most importantly – we provide design and remedial recommendations.