This experiment has nothing to do with cancellation in a room. Take the speakers out of the pipe and try again. Use broadband noise as your sound, and see what you can achieve by way of cancellation. Mainly find out how far apart you can place the speakers and still achieve useful results.
dPearce Consulting
Well, I can't see how not. If you manage to place them according to the noise, you should get the same effect, if using a DSP that calculates the waveform, and timing. Mercedes used this on some of their cars to cancel out noise, and many planes use it...
available:
Unless you sleep during the day, check the Noise abatement regulations and file a complaint.
If you sleep during the day Move! It's cheaper.
The next technical step would be a "room within a room" which is of course a large cost in labor and building materials. It would need to be built on a floating floor, with the walls and ceiling built on top of it without touching the existing walls and ceiling. Read F. Alton Everest's "Master Handbook of Acoustics" if you consider doing this.
Do as Clarence suggested and look for some local noise ordnances they might be violating, in addition to running a business in a residential area which might also go against some ordnance, but at least be a good neighbor, explain the problem to them and give them a chance to fix it before turning them in for anything.
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These films are soly for reflection of infrared, and are not made for sound, and cannot do anything regarding sound.
Naw..it is Gold Rueberg.
Which is why i suggested conductive pickups outside and conductive speakers/vibrators inside.
Try the active sleeping ingredient in Bacardi.
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If you can arrange things so that you sleep in a 4" Y-shaped pipe with a speaker on one leg and all of the undesired noise entering at the other leg, then it will work. Try your experiment with a one foot square box with a handful of speakers outside the box sending noise - different sources - through the box walls. (Put a microphone inside so you can tell how noisy it is.) Now try to reduce the noise with any configuration of speakers inside the box.
No they haven't.
Systems have been built in large halls to *add* reverberation, with the halls designed to start out with dead acoustics.
You cannot remove reverberation of echos using active cancellation. That can only be done with passive sound absorbers and passive helmholtz resonators.
....
Films on the glass could be used to reduce light, UV or for security.
Films can also stop vibrations of a glass window, like puting a finger on a pitch fork.
Films between two layers of glass or glass and plastic create an air space that acts as a buffer for the sound. The films also resonate at different frecuencies as the glass windows. They dissipate sound wave energy or they shift sound frequencies to frequencies that you can not hear.
Basically undoable.
Get extra glazing installed.
Graham
As a sound engineer amongst my various skills, please note you're talking out of your arse.
Graham
Considered triple glazing ?
Increasing the thickness / weight of the glass is hugely effective too. My windows are single glazed but with 6mm laminatated glass. Made an astonishing difference over the old windows.
If it's coming through the walls that's not good. What's your wall construction ?
Graham
It could only happen in the USA ! Lol ! Do they fit machine guns too on request ?
Graham
pickup
IIRC the OP said it was someone operating a manufacturing business from their home.
Around here that's a no-no and the city will shut them down in a blink.
We recently had a gun dealer shut down from operating a web business because of too much UPS (daytime) traffic.
To me that seemed a bit of a stretch of the rules, but the magic word "gun" got all the politically-correct crowd all up in a dither.
...Jim Thompson
That's fine if what you want to do is to stop a glass window from vibrating. What is being discussed is reducing the amount of sound being transmitted through a glass window, and no plastic film can possibly do that.
....has what appears to be a good design, but the web page tells lies about "stopping vibrations - like a finger on a tuning fork." If you tap your window with a rubber hammer and it rings like a bell, such dampening will help. Most windows are already well-damped by the frame. You will note that soundproofwindows.com doesn't try to sell you single-pane laminated glass for soundproofing - becuase they know that it lets as much sound through as normal glass when placed in ordinary window frames.
No it doesn't. *Air* between two layers of glass or glass and plastic creates an air space that reduces sound transmission.
Bullshit. No acoustical treatment can shift sound frequencies to frequencies that you can not hear.
pickup
I gathered, from the OP, that it was dumpster noise. In my neighborhood you can't even have a dumpster unless there is home construction in progress.
Indeed! I operate a business from my home. I do get fairly regular FedEx and UPS deliveries, but not significantly more than anyone else on the block.
Most of my "shipments" are via the Internet ;-)
They only shut down operating from his house... there was no prohibition of actually conducting the business.
...Jim Thompson
Try accumulating some sleep debt.
pickup
What's a "manufacturing business" though? My "retired" neighbor makes (expensive, high-end) handmade knives and sells them at craft shows (and, I think, on-line). A neighbor at our last house outfitted his garage as an office and did insurance work of some kind (the insurance-specialized courier van came regularly). I think if you start getting traffic, creating noise or smells then you attract attention. If you don't have employees then it's a lot harder for them to hassle you if you're on decently good terms with the neighbors. A lot of white-collar people are working from their homes, full or part-time, these days. If you don't make noises and smells, don't have many visitors, don't put up signage, and don't take deliveries or make shipments directly from your home, I don't see how they'd even find out unless you tell people. A lot of the denizens of rec.crafts.metalworking must live in rural areas or areas with weak zoning laws, as they have more equipment in their garages/basements than many commercial machine shops!
What about all the people selling on e-bay?
Best regards, Spehro Pefhany
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