That deep hum? It can be fixed.
Low-frequency noise from traffic, industry and equipment travels for kilometres, bends around barriers and passes straight through double glazing. You're not imagining it, and closing the window was never going to fix it.
Low-frequency noise has a signature.
If several of these sound familiar, the hum is real and it's exactly the kind of noise we work on.
You feel it as much as you hear it, a pressure, a throb, a rumble.
It's worse at night, when everything else goes quiet.
Closing windows and doors barely changes it.
It's louder in some rooms than others, sometimes worse indoors than out.
You can't point to where it's coming from.
Others in the house barely notice it, sensitivity to the deep end varies.
Walls work on the treble, not the bass.
The low end of the spectrum is the part that reaches your bedroom and the part the usual fixes miss.
It reaches sleep first
Chronic night time noise raises stress and heart disease risk long before anyone would call it loud. The health cost is measured, not imagined.
It travels kilometres
Below 200 Hz, sound bends around fences and passes through brick. Distance alone doesn't protect you, and neither does another wall.
Stop it at the boundary
Reduce it at the boundary of the noise emitter and even at the boundary of your property or walls.
How it actually works, in plain English.
A few small microphones measure the noise, software maps exactly how it reaches you and speakers cancel it out before you hear it, usually near the source, sometimes closer to home.
Listen
A handful of small microphones are placed around the noisy site and sometimes at a nearby property, to measure exactly how the low-frequency noise behaves.
Understand
Software works out exactly how that low hum spreads across the area and reaches your home, so we know precisely where it's loudest and why.
Cancel
Speakers produce a mirror-image sound wave that cancels the noise out. Usually that happens at the site itself; sometimes a speaker closer to your home gets a better result.
You don't have to wait for the technology.
Keep a diary
Note the dates, times and weather when the hum is at its worst. Patterns are evidence; they point to a source and make your case credible.
Raise it properly
Report it to the site operator and your council in writing. A paper trail carries more weight than a phone call.
Tell us
Your reports shape where we deploy first. The survey takes two minutes, and we read every one.
Take the survey →07
Get in touch
Control noise in your space.
Whether you operate a business or just want some peace and quiet in your home, let's talk about noise.
Reducing noise pollution and protecting people at home, at work, and in their community, using Physics AI.
© 2026 Noizend Pty Ltd · Sydney, Australia