Who we are

DECIBEL - soundproofing and acoustics

DECIBEL is a Bulgarian engineering and production company, founded in 2012 in Sofia. Today, DECIBEL is one of the largest manufacturers of sound insulation and acoustic solutions available in over 38 countries around the world.

Innovation and science are leading in our work. In addition to manufacturing and developing noise control systems, we design and install our solutions for customers around the world. Our solutions include soundproofing systems for homes, offices, and clubs; acoustic materials for studios, bedrooms, and hotels; soundproofing industrial cabins for machines and production lines, as well as vibration-isolating solutions for specific production equipment and vehicles.

Our customers and partners around the world choose us because of our short lead times, the sophisticated approach to engineering solutions (which save money), and the guarantee for achieving the results that we give.

We pay special attention to the entire cycle of a project - from design, through production, delivery, and installation to its completion with final control measurements.

Over the years, our team has completed over 2700 sound insulation and acoustic projects for residential buildings, clubs, industrial chillers, offices, conference rooms, and even animal shelters and yachts and received references for excellent results from both private clients and architects, investors, project management organizations, construction companies, private and public organizations from Bulgaria, Europe, and Asia.



Production Facility 

DECIBEL has its own 2000 m2 production facility located in Botevgrad, Bulgaria, which makes us one of the largest manufacturers of sound insulation and acoustic materials in Europe.

For the first time, the DECIBEL factory opened its doors in 2014 and started the production of acoustic diffusers and coatings with electrified fibers - flock. In 2015, the company purchased fast- wire cutting machine for its acoustic blocks formation. Followed by the purchase of machines for metal processing and CNC cutters for the production of perforated and engraved acoustic panels.

To date, part of the production of DECIBEL is robotized, while the fine details are done by our skilled artisans with precise hands. The factory is divided into sectors for processing wood, metal, textiles, and the production of gypsum-composite products.

Daily from our factory are shipped acoustic and soundproofing products to 3 continents, which are distributed to over 20 representatives around the world who offer them in their stores and warehouses.



The Founders

Ph.D. MSc. Eng. Tsvetan Nedkov
LinkedIn Profile
Doctoral thesis: " Development of methods and algorithms for calculation of sound noise reduction transmissions loses of wall linings for recording studios and concert halls."

Master of civil engineering UASG, Sofia

Diana Tzonevska- Nedkova
Founder / CMO @ DECIBEL
LinkedIn Profile
BA International Business (German & Italian) @ European Business School London, UK
МА Brand building (English) @ New Bulgarian University, Sofia


Innovations and scientific contribution 

DECIBEL's research and development department is led by Ph.D. eng. Tsvetan Nedkov with a doctoral thesis on "Research and Development of methods and algorithms for calculating the transmission loss of partitions for concert halls and recording studios". In the development of new products, DECIBEL has successfully collaborated with the Department of Physics at the University of Architecture, Civil Engineering, and Geodesy, the Department of Radio and Telecommunications at the Technical University of Sofia, and the Polymer Engineering Department at the University of Chemical Technology and Metallurgy, Sofia.

The following scientific papers bellow have an impact factor and verify the scientific nature of our product development process:

1. MUTE SYSTEM composite system with published results at the international scientific conference ICEST 2014

2. Designing and manufacturing of a reduced silencer chamber for testing samples in a physics laboratory at UACEG, reported at a scientific conference at UACEG, 2014

3. Development of industrial chevron silencers published in IJETCAS International Journal 2015

4. Multilayer composite soundproofing panels for walls, published on CEMA 2015

5. Development and realization of multilayered thin sound reduction panel for existing walls, presented at the International conference – IcETRAN, 2017


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