Noise Management and Sound Masking

One size does not fit all when it comes to effectively managing noise problems, and that’s why Lencore offers a wide range of simple set-it and forget-it fully customizable noise management solutions.

You may love your noise canceling headphones when you’re on a plane and wish to shut out the world around you, but the way to achieve focus and productivity in your professional environment requires a different set of noise reduction techniques. That’s where Lencore’s state of the art sound masking comes in.

Read more about sound masking solutions here: 

https://www.lencore.com/products/sound-masking-products/

About Lencore:

Lencore is widely recognized as the top provider of sound masking systems that help boost workplace productivity and protect speech privacy. For more information on Lencore’s sound masking systems, contact Lencore at info@lencore.com or call 516-682-9292.

Transcript

SPEAKER_00 0:00

Welcome to the Lincore podcast. And today we are going to talk about noise management and sound masking. We're we're really tackling an issue that I think defines modern work, and that's how to get truly deep focus in these open, shared, or you know, even hybrid office environments. Right. Most of us, our first instinct is a personal solution. We pull out our noise-canceling headphones to just block everything out.

SPEAKER_01 0:25

Of course. They're great on a plane.

SPEAKER_00 0:26

Aaron Powell Exactly, great for a plane or a train. But that consumer tech doesn't really work for a whole workplace, does it? The techniques you need for, say, corporate acoustic comfort are just fundamentally different.

SPEAKER_01 0:38

Aaron Powell And that's the key distinction we have to make. Headphones work by subtraction, right? They create an inverse wave to cancel sound right at your ear. You can't do that for an entire room.

SPEAKER_00 0:48

You can't just vacuum up all the noise on a floor plan.

SPEAKER_01 0:50

Aaron Powell You can't. And actually, you wouldn't want to. That's the part that surprises a lot of people. We think a silent office must be a productive office, but it's often the opposite.

SPEAKER_00 0:59

Aaron Powell What do you mean by that?

SPEAKER_01 1:00

Well, when a space is too quiet, library quiet, let's say, every little sound gets magnified. A pen tapping, a cough. A distant cough, someone rustling a piece of paper. It becomes this major auditory event that just grabs your brain's attention. And worse, people get really self-conscious. They start whispering, they avoid making phone calls. Trevor Burrus, Jr.

SPEAKER_00 1:20

Right, because they know everyone can hear every single word. The silence actually creates stress.

SPEAKER_01 1:24

Aaron Powell It does. The psychological CC just drops because there's no privacy.

SPEAKER_00 1:28

So our mission here is to explore the engineered solution for this. We're looking at sound masking and trying to understand how adding a very specific, unobtrusive background sound can actually bring back comfort, focus, and critically speech privacy.

SPEAKER_01 1:43

Aaron Powell Okay, so let's unpack sound masking. At its most fundamental level, it's an acoustic solution. It's hardware and software working together. And the process involves It involves introducing a low-level engineered ambient sound into a space. The whole point is to reduce the distracting effect of other noises, especially human speech.

SPEAKER_00 2:02

So the goal isn't to get rid of noise, it's to change how we perceive the noise that's left.

SPEAKER_01 2:08

Precisely. It's about creating a functional, non-stressful space where you can have people working on their own right next to a hub where people are collaborating.

SPEAKER_00 2:17

You know, it's funny, you've probably experienced this effect without even realizing it.

SPEAKER_01 2:21

Oh, almost certainly. A great example is trying to listen to a conversation when you're standing next to a um a water fountain in a lobby or at the beach.

SPEAKER_00 2:32

The beach with the crashing waves.

SPEAKER_01 2:34

Exactly. You are fully aware that people are talking nearby. You can see their mouths moving.

SPEAKER_00 2:39

But you can't quite make out the words.

SPEAKER_01 2:41

You can't. The background sound, the waves. It's raised the ambient sound level so much that your brain can't easily distinguish the speech patterns. That's what we're engineering in an office.

SPEAKER_00 2:50

Ah, that's a great way to put it. It's all about intelligibility. So for the worker, the outcome is that sound masking shrinks the radius of intelligibility. That's the term, yes. It just reduces how far away a conversation can be clearly understood. And by doing that, you've just removed a massive cognitive load from everyone else in the room.

SPEAKER_01 3:09

They're not fighting to ignore their neighbors anymore.

SPEAKER_00 3:12

Which brings up the obvious question then. The mechanism. How is this different from me just turning on a fan or, you know, playing a white noise track I found online?

SPEAKER_01 3:20

Aaron Powell That's the critical difference, isn't it? It's about engineering versus a generic sound. The key is uniformity, consistency, and uh very specific frequency targeting.

SPEAKER_00 3:34

Okay, break that down.

SPEAKER_01 3:35

Sound masking gently raises the ambient sound uniformly across the whole space. And the sound it adds isn't just noise, it's a clean, broadband, non-intrusive sound.

SPEAKER_00 3:46

So it's not actually canceling the sound waves of speech.

SPEAKER_01 3:49

No, it's effectively lowering the speech signal relative to the overall background sound.

SPEAKER_00 3:53

And what's fascinating is how this ties into human physiology, right? The sound isn't random.

SPEAKER_01 3:57

Not at all. It's specifically engineered, algorithmically designed to match the primary frequencies of human speech.

SPEAKER_00 4:05

The parts of our voice that carry the most information.

SPEAKER_01 4:07

The parts that carry intelligibility. So by raising the background sound to a very specific controlled level, we get what we call speech privacy.

SPEAKER_00 4:16

And I think that's a point worth digging into. The system isn't just making a loud hush sound. The sources we looked at mention Lencor's green sound, for example. It's described as a unique noise reduction algorithm. That's right. Calibrated precisely to those ambient speech frequencies.

SPEAKER_01 4:33

And that calibration is what keeps it from becoming a distraction in itself.

SPEAKER_00 4:38

It's there, but you don't really listen to it. Your brain just tunes it out.

SPEAKER_01 4:41

Exactly. And that targeted approach is what allows two people sitting together to have a perfectly clear conversation. It's easy to hear each other up close.

SPEAKER_00 4:49

But the energy from that same conversation, the words and phrases, they just drop off and become unintelligible three or four desks away.

SPEAKER_01 4:56

It becomes background murmur.

SPEAKER_00 4:57

And physically, how is this delivered? It's not coming from a few big speakers in the corner, I assume.

SPEAKER_01 5:03

No, that would ruin the uniformity. It's gently introduced through a whole network of small speakers, usually hidden in the plenum, you know, above the ceiling tiles. They're all controlled by a central electronic device.

SPEAKER_00 5:14

Aaron Powell All set at a level just slightly above that background hum of an indirect conversation.

SPEAKER_01 5:19

So it just blends right in.

SPEAKER_00 5:20

So if we step back from the open office for a second, where is this technology absolutely critical? We're moving into areas of confidentiality and legal compliance now, aren't we?

SPEAKER_01 5:30

We absolutely are. This is where it goes way beyond just comfort and productivity and becomes about meeting strict legal and ethical rules. We call it confidentiality sound masking.

SPEAKER_00 5:41

And it's for protecting sensitive information where any kind of eavesdropping could have, well, severe consequences.

SPEAKER_01 5:48

Think about an attorney's office discussing a case, or a hospital reception area where you can overhear sensitive patient information.

SPEAKER_00 5:56

Government facilities, financial institutions, debating a merger?

SPEAKER_01 6:00

All of these sectors are mandated by law to protect that information. This technology is a key part of how they do that physically. These systems are deployed globally in top-tier government buildings, major hospitals, financial firms. It's a standard requirement.

SPEAKER_00 6:15

And that brings up a point about trust, especially for government use. The sources mention that these products have to comply with things like the Buy American Act and the Trade Agreements Act. Trevor Burrus, Jr.

SPEAKER_01 6:25

BAA and TAA. Trevor Burrus, Jr.

SPEAKER_00 6:26

That's not just a formality, is it? It's a commitment to a secure U.S. manufactured supply chain.

SPEAKER_01 6:32

Aaron Powell It's a critical level of assurance, especially for federal clients, that the equipment itself is secure and reliable. But beyond high security, we have to talk about the modern hybrid workplace. Right. It has its own very unique acoustic problems. Before, you know, 2020, a busy office had a natural buzz. A hundred people working, phones, printers, footsteps. It created sort of social cover. Yes. But when that office is suddenly at 30% capacity, that cover is gone. The space becomes eerily quiet.

SPEAKER_00 7:02

And you're back to the pen tapping problem. Everyone feels like they're in an echo chamber.

SPEAKER_01 7:07

So sound masking steps in to replace that missing ambient noise. It removes that uncomfortable, sterile feeling and brings back the acoustic comfort people need to speak freely.

SPEAKER_00 7:18

It really does sound like a utility then, like proper lighting or climate control. But what about implementation? I mean, one size does not fit all has to apply here.

SPEAKER_01 7:28

Oh, absolutely. This is where the engineering gets really complex because every building is acoustically different. But we can sort of break it down into three tiers of complexity.

SPEAKER_00 7:36

Okay.

SPEAKER_01 7:36

Let's start small. A single room or a small area, like a doctor's exam room.

SPEAKER_00 7:41

What's the focus there?

SPEAKER_01 7:42

It's all about proper placement. The goal is to make sure the acoustic response is identical everywhere in that small zone. You can't have it loud in one corner and soft in another. It has to be perfectly even.

SPEAKER_00 7:52

Got it. So what happens when you scale up, say a medium-sized open plan office for 50 people?

SPEAKER_01 7:59

For those small to medium environments, the number of variables just explodes. The approach has to be really tailored. Now we're doing calculations that have to factor in the ceiling, the type of ceiling, the height of the ceiling.

SPEAKER_00 8:11

The plenum space you mentioned earlier.

SPEAKER_01 8:13

Exactly. That void above the ceiling tiles. The height of that space totally changes how sound travels and reflects. A higher ceiling might mean you need more speakers or different power configuration to keep that sound level uniform on the floor below.

SPEAKER_00 8:29

So you're almost using the building's architecture as part of the sound system.

SPEAKER_01 8:33

You are. The plenum becomes a diffusion chamber.

SPEAKER_00 8:36

Okay, so that brings us to the most complex level: the enterprise system, an entire corporate campus.

SPEAKER_01 8:41

This requires the most comprehensive strategy. We're managing noise across multiple floors, maybe even multiple buildings, all at once. It's all about advanced network control and zoning.

SPEAKER_00 8:51

Because the lobby has a 20-foot ceiling, but the IT department has a seven-foot one.

SPEAKER_01 8:56

Precisely. You have all these different environments, and the number and placement of speakers has to be calculated for each one. The biggest challenge at the enterprise level is just consistency.

SPEAKER_00 9:07

You want the sound masking to sound and feel the same, whether you're on the second floor or the tenth.

SPEAKER_01 9:12

The employee should have a seamless acoustic experience. So you need a network system that allows for global control, but can also be fine-tuned locally to account for, I don't know, a new wall of glass partitions they just installed in one department.

SPEAKER_00 9:26

Aaron Powell So it sounds like the goal is to make the environment feel acoustically simple, even though the technology underneath is incredibly complex.

SPEAKER_01 9:34

That's the perfect way to put it. It requires a detailed acoustic map of the entire facility to ensure that when you turn it on, the speech privacy is there consistently, everywhere.

SPEAKER_00 9:44

So wrapping this up, what's the core takeaway for you, the listener, for the architect, the facilities manager, or just the employee trying to get work done? It seems to me that sound masking is this advanced, scientifically engineered solution. It's not just a sound file, it's a system for creating a comfortable, productive environment.

SPEAKER_01 10:02

And it delivers that vital speech privacy by being clever, by targeting the specific frequencies of human speech. It really is a fully customizable noise management solution, scalable from one room to a global HQ.

SPEAKER_00 10:17

And to connect it back to the human element.

SPEAKER_01 10:20

Well, I think you should consider how the acoustic environment directly affects performance. I mean, people do their best work when they aren't stressed, when they feel comfortable and secure.

SPEAKER_00 10:29

And without the right acoustics, that environment is basically impossible to achieve.

SPEAKER_01 10:33

It's unattainable. You have to solve for both too much noise and too much silence.

SPEAKER_00 10:37

A crucial insight into how engineered sound can really help us collaborate and focus. Thank you so much for walking us through all this, and thank you for joining us for this discussion.