Noise Control

If industrial machines need to be extra quiet, the use of acoustic cameras can provide the needed support. Machines that work with aluminum are in an acoustic world of their own. For instance, the cavities in the aluminum profiles sometimes increase vibrations in a unique way: the generated sounds are clearly audible, but it is ...

Finding the exact source of disruptive noise in buildings can be very difficult. That’s why, building acoustic experts and construction engineers are getting help from acoustic cameras. In fact, sound is a deceiver! Although, it is simple for human beings to perceive it, it’s really hard to pinpoint its exact origin. In other words, the ...

CSH or Coherence Scanning Holography is a patented method which is developed by Seven Bel. In Seven Bel acoustic cameras which are named as “Sound Scanner“, sound imaging is done based on audio data captured with moving microphones. This novel method is fundamentally different than the method of beamforming which is used in conventional acoustic ...

All the companies desire to provide customers with the best products. Having said that, they must comply with legal requirements, and keep an eye on employee health as well. However, disturbing noise on company premises and products pose an obstacle in trying to achieve so. How can we prevent this? Noise reduction and noise protection ...

During the Winter Olympics which was held in Beijing in 2022, the spotlight was constantly on the athletes and their exceptional performances. People from all over the world were watching the competitions either television or the Internet. Other than sporting achievements, the spectators would also appreciated when the commentators provided some clearly understandable and interesting ...

Nowadays, people are setting stricter standards concerning noise generated by objects they use in their routine lives. Therefore, acoustic requirements for such products must be considered both during quality control and during product development. For instance, when doing quality control, you can eliminate the acoustically abnormal devices from the production line and then examine them ...

Operating facilities for energy generation and production cause noise emissions (environmental noise) that violate legal requirements; which will eventually lead to the following problems: Unpleasing and impaired working atmosphere for everyone including the employees Legal disputes with local residents It’s true that exceeding limit values is quickly proven; but the attribution to noise emitters at ...

With each new vehicle generation, acoustic requirements for vehicles are requiring much skill and effort. And as a result using an acoustic camera for noise source identification is becoming an inseparable part in automotive industry. Moreover, the best possible reduction of noise and disturbing vibrations is absolutely necessary in automotive development. Generally, the most problematic ...

Unwanted noise and sound transmissions in buildings are serious problems. And, detecting the cause can be like a guessing game! However, if professionals of building acoustics use an acoustic camera together with a a tapping machine or an omnidirectional loudspeaker; they can acquire information about all acoustic conditions within a building: Acoustic leakages at doors ...

The engineers who are working in the field of machinery construction are constantly trying to reduce sound emissions. In fact, they use sound level meters to determine if a product or process complies with the legally prescribed limits or not. What to Do if that is Not the Case? Which component is causing the problem? ...

Unwanted noise generated by machinery or in badly insulated buildings is not only disturbing but can point to defects; however when searching for defects, a lot of valuable time is often wasted. In fact, conventional acoustic cameras are usually unwieldy, expensive and difficult to operate. And, handheld devices deliver results that are too in accurate, ...

The results of a recent study confirms the need for strong policy and decisive action to protect children from the harmful effects of noise pollution. It has long been known that noise can influence learning in children. Significant funding has been earmarked for the European LIFE QUALITY program to further research in this area. The ...