When an office feels loud, most teams jump straight to buying acoustic panels or switching on a sound masking system before they know what's actually causing the problem. A more effective approach flips that order and starts with a diagnosis: measure what's happening in the space first, treat the noise at its source where you can, and use masking to cover whatever treatment can't reach.
In this article, we'll walk through what each step actually involves, the difference between sound masking and absorption, and how to decide between solutions without guessing.
Measuring tells you what kind of noise problem you have and where it's coming from. Treating addresses the noise at its source, either by absorbing it or blocking its path. Masking doesn't remove noise at all; it adds a steady, low-level background sound that makes existing noise less noticeable and less intelligible.
|
Approach |
What it does |
What it uses |
When to implement |
|
Measure |
Identifies the level, source, and pattern of noise in a space |
A continuous sound monitor, not a one-time spot check |
Always the first step, before spending on any fix |
|
Treat (absorb/block) |
Reduces reflected sound and interrupts its path between people |
Soft, absorptive materials (ceiling tiles, wall panels, carpet) and physical barriers (partitions, enclosed rooms, full-height walls) |
When reverberation, overheard speech, or a specific noise source is identifiable |
|
Mask |
Raises the ambient background level to cover residual noise and protect speech privacy |
An electronic system emitting a steady, engineered sound through ceiling- or floor-mounted speakers |
After treatment, for noise that can't be fully absorbed or blocked (e.g., general chatter in an open-plan office) |
These three aren't interchangeable options to pick from at random. They build on each other, and skipping the first step is why a lot of acoustic spending doesn't pay off.
Measuring first tells you whether a space has too much reflected sound, too little separation between workstations, or simply too much background noise overall, and each of those calls for a different fix. Buying acoustic panels for a room where the real problem is an open floor plan with no partitions won't help, and neither will a masking system in a room that just needs a softer ceiling.
There are two approaches to measuring sound: one-time acoustic survey and continuous sound monitoring. Unlike indoor air quality, which can use continuous monitoring alone, you need both types of sound measurement in order to get a 360º picture of your acoustic environment.
A one-time acoustic survey, run to a standard like ISO 3382-3:2022, captures metrics like reverberation time and speech privacy while a room is unoccupied. Continuous monitors measure everything else while the room is occupied to tell you how that acoustic design holds up day in and day out. It’s also what helps you turn the feeling of “this room is too loud” into a measurable, fixable problem.
Treating noise means either absorbing it or blocking it, and both usually need to happen before masking is considered.
The WELL v2 Sound concept reflects this priority directly, and treats absorbing and blocking as two distinct requirements rather than one:
Masking makes sense once a space has already been measured and treated, and some background noise or speech intelligibility issue remains. Rather than removing sound, a masking system raises the ambient background level slightly so that speech and other noise become harder to make out, which reduces both distraction and the sense that private conversations are being overheard.
In WELL v2, sound masking pressure limits are set at 48 dBA in open areas and 42 dBA in enclosed quiet rooms, a narrow enough ceiling that getting it wrong (too quiet to be effective, or loud enough to become its own distraction) is a common failure point.
That range isn't arbitrary. A six-week field study across two open-plan offices found that 42 dBA masking performed just as well as 47 dBA on occupant-rated acoustic satisfaction. That range, however, only holds up in practice if it's confirmed against what a space is actually measuring, which is another reason masking is the last step, not the first.
Get that sequence right, and the return is significant. In one Finnish open-plan office, installing masking and raising background noise from 35 to 44 dBA cut self-reported wasted working time from 14 minutes a day to 6, and shrank the radius of distraction from 13.2 meters to 6.2.
An important distinction to make with sound masking for focus is that it only works at the room level, not at the individual level. Two experiments showed that, despite active noise-canceling headphones reducing annoyance and improving speech privacy, they produced no measurable improvement in actual cognitive performance.
The way a room sounds off usually falls into one of three patterns, and each one points to a different fix:
Once you know which pattern you're looking at, the fix follows directly:
Figuring out whether a space needs absorption, blocking, or masking isn't always obvious from perception alone. Before you can treat or mask a space, you need to measure it, and that's where Kaiterra comes in. Reach out to our team to talk through a measurement-first approach to acoustic comfort in your space.