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Brüel & Kjær Sound & Vibration A/S


Bruel & Kjaer - Denmark was founded in 1942 by Per Bruel and Viggo Kjaer. Since 1994, the company has become part of the Spectris Group - UK (See Turnover in recent years is more than EUR 150 million a year.

The company is a global leader in noise and vibration, with more than 65% of global market share. The basic ISO and EN standards in noise and vibration have been created by and in collaboration with Bruel & Kjaer specialists.

Brüel & Kjær Vibro 


In 1998, Brüel & Kjær CMS and Schenck Vibro combined their years of experience in machine monitoring, diagnostics and machine protection and created a new joint venture company, which since 2001 has been named Brüel & Kjær Vibro (B&K Vibro). The company's portfolio includes hardware, software, sensors and all the necessary services, training and consulting to install, use and implement the solutions offered. "With more than 60 years of experience in vibration monitoring, B&K Vibro helps its customers protect their machines from severe accidents as well as optimize maintenance based on their actual mechanical condition.



Envirosuite is a global provider of unattended continuous environmental monitoring solutions. Our managed services and products provide environmental intelligence to help customers achieve business results and growth. More than 220 airports - and hundreds of organizations in other market sectors - use our services to manage environmental impact and build community support. Envirosuite systems monitor a number of environmental elements, including noise, vibration, dust and air quality.

SoundEar A/S 


SoundEar helps companies around the world reduce noise at work. We do this through our 20 years of experience in the noise monitoring industry and our unique offering not only for noise measurement but also for visualization of noise.

Creating noise awareness is the first step to making a change and we believe that the best way to create noise awareness is to visualize it.



Founded in 1982, Instantel specializes in the production of vibration and blasting modules. The company is part of Stanley Black & Decker, Inc.

Instantel's equipment for "regulated" vibration and overpressure control has gained over the years the reputation of the most reliable such equipment (used in more than 110 countries worldwide) - for various applications in mining, construction and geotechnical research.

Communication Technology Center


Offers the widest variety of high-quality accelerometers, vibration sensors, cables and connectors for industrial use in condition monitoring and predictable maintenance applications. This is a leading product portfolio supported by an unconditional lifetime warranty on all CTC industrial accelerometers and vibration analysis.

Bulgarian Association For Public Noise Control And Management


The Bulgarian Association For Public Noise Control And Management is a non-profit public organization, which was formed as an expert national center of competence in noise and vibration and whose main purpose is to promote and uphold the expert principle in preparing opinions, consultations, national and international strategic documents in the field of acoustics.

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