Reverberation time (RT60) is a key parameter that measures how long sound persists in a room after the source is turned off. It defines how many times the reflected wave overlaps with each subsequent spoken word. If RT60 is too long, speech becomes muddy and participant fatigue rises drastically. If it is too short, the interior sounds unnaturally "dry." At Nyquist, we measure this parameter to restore full functionality to your space.

One number is not enough. Why do we measure the frequency-band characteristics?

Poor acoustics are rarely uniform. A room that "sounds good" to the human ear in the mid speech band may have a major problem with booming bass.

That is why we do not provide averaged results. We measure RT60 in octave or one-third-octave bands (from 125 Hz to 4000 Hz). This is crucial, because standard acoustic panels absorb sound most effectively above 500 Hz. If your problem lies in the 125–250 Hz range, sticking more panels on the wall will have no effect—it is just throwing the budget away. Precise measurement shows us what kind of acoustic treatment you actually need.

When do we perform RT60 measurements?

We operate where assumptions end and engineering begins:

• Problem diagnosis (Existing offices): Are users complaining about noise and headaches? Instead of buying panels "to test," let’s diagnose the interior. We will answer precisely: which frequency band contains the problem and how to eliminate it at the lowest cost.

• Design verification (Investment handover): The design assumed RT60 at 0.5 s. Did the contractor achieve it? Our measurement is the only objective proof, serving as the basis for accepting the premises or requesting corrections.

• Adaptation design ("Zero" point): Planning to modernize a restaurant, school, or office? A baseline measurement is the foundation. Without it, we do not know how much and what type of absorbing material to use.

• BREEAM / LEED / WELL certification: Green building systems take acoustic comfort very seriously. Our report is an official document confirming that your building meets the criteria.

Report value tailored to your role:

• For the Facility Manager and Investor: We prove that improving RT60 (e.g., to 0.4–0.6 s in meeting rooms) measurably translates into productivity and unrecorded employee absenteeism. The report is a solid business argument.

• For the Architect and PM: The measurement report is a ready-to-use design matrix. We provide precise material guidelines: we indicate the product name from our offer, the required quantity, and the optimal installation location.

• For audio professionals: We conduct advanced diagnostics. We measure T20, T30, and EDT, determine the STI index (speech intelligibility), and report compliance with, among others, the EBU Tech 3276 standard.

How do we work? (Technology and Standards)

We do not accept half-measures. We conduct measurements using calibrated equipment of Class 1 accuracy, employing reference omnidirectional sound sources. We carry out procedures strictly in accordance with the ISO 3382 series standards and based on the Polish standard PN-B-02151-4.

You receive a comprehensive document from us. It is not just a set of charts, but a clear interpretation of the results, an assessment of compliance with requirements, and—most importantly—specific engineering recommendations.