Ventilation Solution for Spoke Acoustics

Ventilation Solution for Spoke Acoustics

Ventilation Solution for Spoke Acoustics

Spoke Acoustics rneeded a ventilation solution on school project that are needed for acoustic performance requirements due to the site’s close proximity to the new Western Sydney Airport.

The final result of the double louvre gallery was a huge success, achieving up to 53Rw .The Safetyline Jalousie team proudly stands behind this result as one of the highest acoustic performing louvre window systems in the world.

Reference: https://safetylinejalousie.com.au/a-bespoke-ventilation-solution-for-spoke-acoustics/

Expert Tips for a Quiet and Peaceful Apartment

For some people, owning a house is not yet an option. The common choice was to rent an apartment. With this, a different set of pros and cons could challenge the renter. One common disadvantage when renting a unit in a residential building is the fact that the renter could not control whatever is outside the unit that they are renting. This means that if a neighbor is noisy, The only thing that they could do is to complain and wait for the authorities' actions.

There are installments that an apartment renter could use to make sure that the unit they are renting would be noise free. The only problem now is that signing a lease might limit what one can do to fully soundproof their unit. This means that renters who are eager to modify their apartment could only do so much.

Still, there are workarounds that can be done so that the renter could live in a quieter and more peaceful space.

One way of turning down ambient noise from outside the unit is by using ceiling clouds and acoustic fixtures. This is acoustic panels that hang from the ceiling. Using these panels would reduce the noise that would come through from the floor above the unit. It would be a good idea to check with the landlord because some would not allow this installation. There are also acoustic fixtures that manufacturers claim to absorb some sound.

Zach Ziskin, a recording engineer in Fort Lauderdale, Florida, stated that the more mass between a renter and the noisy neighbor could lessen the sound that will come through from the walls. This means that for example, a neighbor has a habit of playing loud guitar in the middle of the night, one solution is to rearrange the furniture by putting bookcases or other heavy Furniture against the wall between the noisy neighbor and the renter.

Heather Humphrey, owner of the interior design firm Alder & Tweed in Park City, Utah, stated that the heavier and denser textile would have greater absorption. This means that it is recommended to position fabric covered sofas with lots of decorative pillows and throws closer to windows and doors.

The interior designer also added that the same principle could be applied when using soft goods such as rugs and towels in the bathroom. She added that the more cover that the walls could have meant that there would be a greater barrier from the sound coming from the other side of the wall.

In a matter of windows, the renter should always consult the landlord before deciding to caulk and seal window casings to make the seal more airtight. On the other hand, an easier way to battle noise from outside the window is to use heavy curtains.

The door is another source of noise pollution because of the cracks around it. For this, high-quality weatherstripping is available which can be installed between the door and the frame to create a seal when closed. If there is an air gap between the floor and the bottom of the door, heavy duty door sweep or a door draft blocker can be attached to create a seal.

Of course, nothing beats letting your neighbor know and consider that you are not comfortable with the noise they are making.

Reference: https://www.sciencetimes.com/articles/22055/20190523/expert-tips-for-a-quiet-and-peaceful-apartment.htm

Cities are Louder Than Ever and it's the Poor Who Suffer Most

In crowded cities, poorer neighbourhoods often experience the most noise pollution. But advances in architecture and sound engineering could offer solutions

Mint Street estate has been designed to minimise the noise caused by passing trains. Previously, it was an industrial area considered too noisy for living.

Mint Street estate has been designed to minimise the noise caused by passing trains. Previously, it was an industrial area considered too noisy for living. Photograph: Kilian O’Sullivan/View/Alamy
The air on Mint Street is heavy with the clang and clatter of the 08:15 to Liverpool Street station. The east London estate is squeezed into a small space beside a curved train line, and the carriages squeal as they round the bend. All conversations freeze until the racket is over, then a few words are passed between neighbours before the next train comes.

Stand on the pavement and the sound is thunderous, but step inside one of the flats and you can suddenly hear yourself think. A double-glazed indoor balcony full of potted plants buffers the noise to nothingness.
“In my flat, we have vent ducts installed in the ceiling,” says resident Nick Butcher, 35. “They connect to the quiet courtyard side of the building, not the noisy front, so I don’t hear the trains.”
The Mint Street estate – a mix of affordable rent, shared-ownership and private sale apartments – was completed by Pitman Tozer architects in 2014 and is managed by the social housing association Peabody. Its 67 homes occupy a site that was previously industrial and considered too noisy for living, but its indoor balconies and courtyard-facing air ducts are innovative ways to stop the boom of a railway breaking into people’s lives. In fact, the only noise complaints from residents have been about children playing in the gardens at the back.

Noise from the pedestrianised Sai Yeung Choi Street South in Mong Kok, Hong Kong caused local residents so much distress city authorities reopened it to cars.
“London is densifying,” says Ivan Harbour of the architecture firm Rogers Stirk Harbour + Partners. “For people not to wring each other’s necks, you need to keep the neighbourly love going. One way to do that is to make sure that you get peace and quiet.”
The wider issue is one facing cities across the globe: how do you deal with the noise of densification?

The UN predicts that, by 2050, two-thirds of people will live in cities. India is projected to have another 416 million urban dwellers than it does now, with China adding 255 million and Nigeria 189 million.

And as cities swell, there are signs we are finding it harder to cope with the noise. In Britain, for example, the government’s most recent National Noise Attitude Survey found “a strongly statistically significant increase” in the proportion of respondents who reported being disturbed by road traffic, neighbours, aircraft and construction.

It is the poor who face the biggest din. In the US, research from 2017 suggests poorer urban neighbourhoods are nearly two decibels louder than affluent areas. Noise pollution tracks social segregation. The same study also found that, across US cities such as Detroit and Chicago, communities with larger proportions of black, Hispanic and Asian residents face higher noise levels than other neighbourhoods.

Noise isn’t only an irritation. Recent studies suggest it can have dire effects on people’s health. High blood pressure, heart attacks and type 2 diabetes are just some of the illnesses doctors have linked to long-term exposure to city clamour, with the European Environment Agency chalking up 10,000 premature deaths a year in Europe to noise.

In 21st-century cities we have to contend with sirens, drills, shouts, rumbles, bangs, screams, barks, crunches, beeps, moans and babbles only a wall away. As our homes, schools and offices cluster tighter together, what can we do to stop the ruckus?

The social housing on Mint Street comes with built-in noise control, but elsewhere silence is a premium commodity. If you live in New York and have $24,000 (£18,300) spare, you might be able to treat your ceiling with mass-loaded vinyl and hang it on springs, or place your radiator pipes on sound-isolating mounts. In Mumbai, acoustic consultants for cinemas are selling soundproof walls for home use, but at prices only the wealthy can afford. Another option may be to out-noise the neighbours. Chinese newspapers report that people in Beijing are turning to vibrating motors, propped against the ceilings of their homes, to pump sound through the floors of people living loud upstairs.

Otherwise, the approach to combating noise is often to build thicker walls. In the UK, this has been precipitated by new energy-efficiency building regulations compelling homes to be highly insulated and more airtight to conserve heat in winter. It just so happens that these environmental measures cocoon rooms from outside sound. Two birds, one stone?

Not exactly. The same energy-efficiency measures that keep homes warm in the winter also trap heat in the summer, meaning people are spending more of the year with the windows open.
“In terms of health effects, this is particularly significant at night when residents are effectively left with a choice of being uncomfortably hot or having their sleep disturbed by noise,” says Dr Anthony Chilton, senior partner at the environmental engineering firm Max Fordham.
One solution would be to run air conditioning and keep the windows shut – but apart from undermining the environmental purpose of thicker insulation, this also introduces scope for social division. Do you pay for cool silence, or open your windows and live with the din? As Peabody’s Patrick Duffy notes: “You’ll have people who can afford to buy and run a cooling system. People in the equivalent flat next door may be social housing tenants and couldn’t afford that.”

If you do manage to block the sounds of the city, there’s the risk you make things too quiet, too uncomfortably silent. Michael Jones, senior partner at Foster + Partners, says that as ventilation technology has improved, the low whizz and hum of fans has vanished. In modern open-plan offices the quieter the room gets, the further speech travels. In response it has become common practice to install “pink noise” speakers that emit a constant low fuzz of soothing static – essentially white noise with higher frequencies reduced.

When the software company Autodesk temporarily turned off the pink noise systems in its offices in Waltham, Massachusetts, staff complained about being distracted by conversations 20 metres away.

Harbour, who built a similar noise system into his designs for a business quarter in London’s Stratford City, describes it as like engineering a race car: starting with a design that is underweight, then calculatedly adding weight little by little. “If you cut the sound out, you can add noise so it feels right,” he says. “It can be tailored in a way that’s better for everyone.”

Bloomberg’s European headquarters in London, which Jones worked on for Foster + Partners, uses Meyer Sound’s sophisticated Constellation electroacoustic system to change the reverberation of spaces, as well as pick up and isolate voices in vast, busy rooms.

Constellation has been described by the New Yorker as “the sonic equivalent of Photoshop”. Instead of pumping background static, it works by using microphones to capture the sound of a space, remodel it with digital systems, then send this acoustically improved edit out via a series of loudspeakers. Because this is all done digitally, sound can be changed on the fly, adding reverberation, or tweaking decay, strength, clarity and warmth. The company has described all this as “invisible architecture”, and while it has mainly been using it with concert halls and theatres, it is testing other uses, including in schools and restaurants.

“As the technology becomes more accessible, I believe the next step will be to experiment with residential buildings,” adds her husband, John. “You could create whole new environments in your house, such as being in the woods. It’s really just programming.”

Being able to digitally edit the sound of your home to have the acoustic properties of a forest might be the future, but Constellation systems currently cost from hundreds of thousands of pounds to upwards of £2m. For the vast majority of people, those in inner-city areas tucked beside railways and main roads, this is simply an unaffordable solution. More likely for now are thick walls and indoor balconies, blocking noise without killing it completely.

Reference: https://www.theguardian.com/cities/2019/apr/25/cities-are-louder-than-ever-and-its-the-poor-who-suffer-most

Engineers Develop Acoustic Metamaterial That Can Cancel 94 Percent Of Sound


Blocking sounds and creating silence even within a noisy environment is possible with the help of acoustic metamaterials.

Researchers at Boston University discovered that they can harness their mathematical skills and use 3D printing to produce a design that can essentially mute noise without limiting air passage.

Quiet Amid The Noise

Reza Ghaffarivardavagh, a graduate student and research assistant in the Department of Mechanical Engineering at BU, said they wanted to create something that can help resolve today's problems. He said living in a busy city like Boston makes it quite difficult to find quiet moments.

Ghaffarivardavagh and Xin Zhang, a professor at the College of Engineering and Photonics Center, created a sound barrier that blocks noise up to 94 percent. Details of their study, including the specific mathematical measurements, are published in the journal Physical Review B.

"This ultra-open metamaterial design, leveraging a Fano-like interference, enables high-performance sound silencing in a design featuring a large degree of open area, which may find utility in applications in which highly efficient, air-permeable sound silencers are required, such as smart sound barriers, fan or engine noise reduction, among other," wrote the authors.

Ghaffarivardavagh and Zhang both share a passion for metamaterials and found a way to acoustic metamaterials to current structural designs. Though relatively young, Zhang believes acoustic metamaterial is the future in the field.

Effective Noise Reduction

The pair hypothesized that by shaping metamaterials in a way that will prevent sound, not air, from reverberating in an open space, they can greatly reduce noise levels.

The researchers modeled a plastic structure created through 3D printing. They attached the end of the pipe into a loudspeaker. The other end was sealed with the sound barrier they created using their mathematical and physical dimensions.

The metamaterial acted like a mute button ringing inside the pipe. What remained of the speaker is a screeching sound that echoed inside the lab.

"We can design the outer shape as a cube or hexagon, anything really," Zhang said. "When we want to create a wall, we will go to a hexagonal shape" that can fit together like an open-air honeycomb structure."

Zhang added that the design can be used to a variety of real-world applications such as reducing the vibrations of an MRI machine.

Reference: https://www.techtimes.com/articles/239416/20190311/engineers-develop-acoustic-metamaterial-that-can-cancel-94-percent-of-sound.htm

Prince Harry and Meghan Markle Dropping Over $65K to Soundproof Home


Prince Harry and Meghan Markle appear to be sparing no expense when it comes to their future home.

The Duke and Duchess of Sussex, who are expecting their first child together next month, are shelling out around $65,000 to soundproof Frogmore Cottage to block the sounds of planes flying from the nearby Heathrow Airport, according to the UK’s The Mirror.

Triple-glazed windows, which are said to be part of the royals’ soundproofing house plans, can help reduce noise and prevent heat loss in homes, per the UK’s Eco Experts.

“You do get used to it, but sometimes it’s an awful racket. A few people have been round to quote for that type of soundproofing, but it’s a great upheaval and is a lot of money,” Karen Shawcroft of Windsor told the UK publication.

Harry, 34, and Meghan, 37, have reportedly dropped over $3 million in renovations on Frogmore Cottage.

The five-bedroom residence, which is located on the grounds of the Windsor Estate, is said to include a yoga studio. An estimated $66,000 “green” energy unit will be able to supply electricity, heat and hot water, while a satellite dish will also be installed.

As for Harry and Meghan’s expected move from Kensington Palace, it has reportedly been delayed.

“It’s been all hands to the pump. The builders have worked all week whatever the weather. But they keep making changes, particularly on the layout,” a royal insider told The Sun.

“The word is they’ve been quite demanding, which is understandable as what homeowner doesn’t want their house to be perfect?” the source added.

April is said to be the now targeted move date.

Reference: https://pagesix.com/2019/03/25/prince-harry-and-meghan-markle-dropping-over-65k-to-soundproof-new-home/

Global Soundproof Windows Market

Global Soundproof Windows market insights relating to crucial aspects of the Sound Proof Windows industry influencing its growth during the forecast period to 2025. It shows the sales of various Soundproof Windows forms of product increasing or declining in various regions and countries. The regional Soundproof Windows analysis provided within the report includes an excellent assessment of geographical niches by all factor like CAGR and market share, production, and consumption. The Sound Proof Windows market is divided in quite a detail for a transparent clarification of key growth areas with leading players can make the foremost of it.

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Soundproof Windows market Types are
  • Laminated Glass
  • Vacuum Glass
Soundproof Windows market Applications are
  • Residential Use
  • Commercial Use
  • Industrial Use
In this study, the years considered estimating the market size of Soundproof Windows :
  • History Year: 2014 – 2018
  • Base Year: 2018
  • Estimated Year: 2019
  • Forecast Year: 2019 – 2025
The global report provides detailed key points that have important effects on the global development of the Sound Proof Windows market. It provides the current market status as well as future aspects for market development. The report is generated after in-depth analysis and thorough analysis of the development in various sectors of the market that desires technological concepts, theoretical analysis, and its applicability. The factors that considerably improve and demote the market growth; deep justification of the market’s previous data; along with the current analyzed data; and also the future development of the Soundproof Windows market are included in the report. The Sound Proof Windows market report additionally delivers a theoretical-based study related to the financial instabilities in terms of the demand and the supply.

Reference: https://themarketfact.com/2019/03/05/global-soundproof-windows-market-business-growth-size-development-status-key-players-analysis-and-comprehensive-research-study-forecast-to-2025/

Acoustic Window, Special Floor Plan to Insulate from Road Noise

It’s not uncommon that sites close to major highways and rail lines have been identified or rezoned for public housing, in an all-out land hunt to provide subsidized homes for the 300,000 applicants currently on the waiting list.

Acoustic windows are among the various measures adopted by the Hong Kong Housing Authority to mitigate the impact of traffic noise at its developments. 

Owing to scarce land resources in Hong Kong, the availability of sites for public housing development is limited in urban areas and some of the public housing developments in these areas are inevitably affected by road traffic noise.
“In this regard, the HA has to consider various noise mitigation measures during the planning and design stage, including appropriate disposition of building blocks and installation of noise barriers, architectural fins and acoustic windows,” 
The authority spent two years, in collaboration with local research institutes, to develop a specially designed acoustic window for sound insulation in residential buildings. These windows have been installed in units at King Tai Court, close to Prince Edward Road East, a major east-west thoroughfare in San Po Kong, as a trial scheme.

Such an acoustic window is a modified double-glazed window that comprises two layers: an openable window at the outer layer and a sliding window at the inner layer.

Unlike conventional double-glazed windows, the two-window-layer design allows an opening for ventilation. Noise absorbent material is installed between the window layers to enhance noise reduction. The distance, size and positioning of the opening are carefully designed with reference to noise refraction and reflection behavior to ensure that the acoustic window can reduce noise while also maintaining ventilation as well as natural lighting at the same time.

The acoustic window can reduce noise even when the window is not completely closed, as proven in tests conducted by the authority in mock-up roadside flats, achieving noise attenuation of up to about eight decibels while allowing air circulation.
“These acoustic windows can effectively mitigate the traffic noise impact on public housing units. We will consider adopting acoustic windows in other public housing developments affected by traffic noise,”
Furthermore, the authority has been adopting case-based, individually designed floor plans for blocks in close proximity to major roads to reduce the impact of noise pollution.

For instance, communal and service facilities such as lifts, staircases and garbage chambers on each floor are clustered on the side facing the nearby East Rail Line in blocks at the newly finished Po Heung Estate in Tai Po and Fung Wo Estate in Sha Tin, while all homes are arranged on the other side to ensure minimum noise exposure for tenants.

Load bearing walls, usually thicker than other non-structural walls, as well as elevator and ventilating shafts are also built on the sides facing the source of noise to serve as a buffer. Sound-absorbing bricks, façade, doors and other decoration and coating materials are used for units that may still be affected by noise.

Reference: http://www.ejinsight.com/20170911-acoustic-window-special-floor-plan-to-insulate-from-road-noise/

Noise Pollution


Noise Pollution

Noise pollution has serious long-term effects on your health. Contact SafetyLine Jalousie and find out how our windows can help with that.