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If you’re the sort that needs peace and quiet to get anything done, escaping the noise pollution of every day life — regardless of where you’re located — is no easy task. A white noise machine can help, but in the end it’s still electronic noise, and unless you can afford a fancy sound system, the noise often sounds unnatural. A new device that sticks onto your window, Sono, will not only cancel real-world noise, but isolate the noises you’d prefer to hear, if any.

White Noise Machine For Office

You live in a corner apartment, and your one, meager window faces a beautiful, serene park. However, in front of that park is a major metropolitan road, host to loud traffic throughout the day. If not for the constant stream of cars and barking dogs, the soothing sounds of chirping birds and the wind rustling through trees would make its way across the street and into your bedroom. You could put on some noise-canceling headphones, but then you’ll have a huge pair of headphones tying you down; music doesn’t do the job white noise does, either. With Sono, you can stick the device right on your window, and fiddle with some settings to either cancel out noise entirely, or cancel out the specific noises that are drowning out the peaceful ones.

As you may have guessed, Sono does sound too good to be true within the realm of modern day technology, and it isn’t a product you can go out and purchase at the moment. Rather, it’s a concept created by Austrian industrial designer Rudolf Stefanich. Sono works by vibrating a window in a pattern counter to the vibrations caused by the ambient noise, essentially turning the surface into a noise-canceling speaker. During prototype testing, Sono’s transducer used active noise canceling to successfully lower the audio signal by 12 decibels — which would probably do a good job of blocking out quieter sounds in the 30-80 dB range, but you’d still definitely hear traffic and other loud sounds.

The device employs concentric broadband antenna rings, and can be charged through WiFi signals or the standard electric outlet, so your noise shield won’t unceremoniously lower in the middle of the night.

Industrial Noise Cancelling Machines

The strength of Sono is not that it can cancel out obnoxious ambient noises, but can still filter pleasant ambient noises through. So, not only can you still get the chirping birds and rustling leaves from that park across the street, but the sounds are natural — not some recreation on your phone that sounds very digital. Though Stefanich’s device is more of a concept than a tangible item, the theory behind the device was successfully tested with that aforementioned prototype. Sono is a finalist for the James Dyson Award, so it’s also getting a fair amount of recognition. Until Stefanich’s device can get production funding — and more testing, considering it sounds like it employs a dark magic to achieve the noise-filtering result — we’ll have to stick to our tinny-sounding white noise smartphone apps.

Industrial Noise Reduction Solutions

Now read: Twin beams of noise-canceling laser light achieve fastest, farthest data transfer record

The hearing protection products from the NoiseMaster range are designed for individuals working in VERY NOISY environments.

They feature the ANR technology, which was initially used in an operational context by the French Armed Forces more than twenty years ago to equip battle tank drivers and helicopter pilots.
The ANR developed rapidly in armed forces throughout the world, civilian services, the aviation world and the industrial sector, improving the performance of traditional hearing PPE. This technology is now commonly used worldwide in the personal protection domain as well as HIFI headphones.

The ANR technology is based on a miniaturised electronic module (2) positioned inside the shell of the headphones. This electronic module is connected to a small microphone (1) which picks up ambient noise, as well as to a small loudspeaker (3) which generates the counter-noise near the ear in order to significantly reduce the noise in the eardrum.

The ANR is most effective in low frequencies and is therefore installed in plastic shells which manage medium and high frequencies.
The figure opposite highlights the additional attenuation provided by the ANR compared with a passive device. The attenuation guaranteed by ANR hearing protection ranges from 30 to 45dBA depending on the ambient noise.

Exceptional attenuation of loud noise in low frequencies
Homogeneous attenuation of low to high-pitched noise
Reduction in the risk of deafness associated with low-pitched noise
Improved alertness at work
Reduction in the fatigue caused by low-pitched noise
Improved perception of the acoustic environment
High communication clarity quality (> 96%)
Elimination of the acoustic confinement sensation due to the headphones

The ANR differs from other so-called 'active' electronic processes available on the market, which are actually 'activated passive' systems, also called controlled attenuation systems.
These devices are equipped with an open valve fixed onto the shell of the headphones. As soon as the noise level reaches 85 decibels, the valve closes and the headphones become a passive hearing protection device. While the closing of the valve is triggered 'actively' by an electronic module which reacts to the noise, hearing protection remains entirely passive as there is no protection other than that provided by the shell.
Only the ANR has an active noise reduction effect.

Heavy industry (cement works, ironworks, stamping, metallurgy, etc.).
Machine operators’ (construction, transport, agriculture, military sector, etc.).
Maintenance personnel (airports, construction sites, etc.).
Pilots (aircraft, helicopters, ultralight aircraft, etc.).
Sporting activities (shooting range, rally racing, motorbikes, etc.).
Any other communication application in a noisy environment (walkie-talkie, radio, intercom, etc.).

Depending on your needs, we provide you with technical assistance services to develop ANR headphones and/or supply modules and sub-assemblies due to be integrated into specific communication systems.
In terms of military applications, TechnoFirst has worked with the ELNO and SILEC/SAGEM (France), Racal Acoustics (UK) and Gemelli (Italy) companies.

Industrial Noise Cancellation Devices

A comprehensive range of headphones and accessories has been developed to respond to user needs and requirements, with a view to optimising the effectiveness of NoiseMaster headphones.
The range of headphones is divided into three categories: protective headphones, protective headphones with audio option and communicating headphones.

Outdoor Noise Cancelling Machine

Autonomy: 25 hours
Charging time: 2 hours
Operating temperature: -15°Cà +55°C
Storage temperature: -20°Cà +55°C
Power: 4.8V DC
Consumption: 30mA
Attenuation in low frequencies: 15dB in passive mode and 40dB in active mode
Operation in an ambient environment of up to 120dB
(To find out more, complete the contact form)