Pushing Acoustic Measurement Beyond Conventional Limits : Interview with Maro Puljizevic
In this interview, Maro Puljizevic, R&D lead at Knauf Insulation a global mineral wool manufacturer, Maro shares how his team approaches acoustic challenges beyond the lab, from product development to quality control in noisy industrial settings. He explains why they moved past conventional microphone-based methods, how scientific transparency builds trust, and what it takes to bring meaningful acoustic insight into the factory of the future.
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From laboratory acoustics to industrial reality
Can you briefly introduce yourself and your role?
"I work in the field of sound insulation at Knauf insulation, a global manufacturer of mineral wool. By trade, I am an acoustician, and I lead our research and development activities related to acoustic performance across different applications and industries."
What kind of acoustic challenges do you encounter in your work?
"Our challenges range from improving the acoustic performance of products to ensuring quality control during production. Many of these challenges occur in industrial environments, which are inherently noisy. Traditional acoustic measurement methods often struggle in these conditions, especially outside controlled laboratory settings."
When conventional methods reach their limits
What led you to look beyond traditional microphone-based techniques?
"At a certain point, we reached the limits of conventional acoustics. Classical microphones and standard methods work well in quiet, controlled environments, but production facilities are fundamentally different. Noise levels are high, and even achieving a short period of silence can be extremely difficult. That was the point where we realized we needed to move beyond classical approaches."
How did you gain confidence in using a non-conventional measurement technology?
"We took a careful and scientific approach. We performed benchmarking tests to understand where classical acoustic methods overlap with newer measurement techniques. The results were very convincing. The data could be validated, and we were comfortable with both the accuracy and reliability of what we were measuring."
The role of transparency and collaboration
How important was scientific transparency in this process?
"It was crucial. One of the things we really appreciated was the openness around research and validation. Being able to review scientific publications, peer-reviewed papers, and technical explanations gave us confidence in the technology and the people behind it."
Did this evolve into a deeper collaboration?
"Yes. What started as a user–supplier relationship gradually evolved into a research partnership. We identified shared research interests and began working together on topics that were relevant to both sides."
Can you give an example of such a research topic?
"One example is the study of membrane effects and their influence on acoustic performance. This is a phenomenon that classical acoustic approaches cannot fully capture. With alternative measurement techniques, we were able to investigate these effects in more detail and understand how certain surface layers can enhance—or reduce—acoustic performance if not treated properly."
Looking ahead
How do you see this collaboration developing in the future?
"The potential is very broad. Our portfolio spans multiple industries, from building construction to automotive and domestic appliances. Each presents different acoustic challenges. Addressing them requires a partner with deep technological expertise and a high degree of flexibility, which is why we see many future research opportunities together."
What role does acoustics play in the factory of the future?
"We operate in very noisy industrial environments. At the same time, we are committed to innovation, sustainability, and the health of our employees. Reducing noise exposure is an important part of that. Until recently, high noise levels were a major barrier to acoustic research in production environments. With new measurement approaches, we are now able to bring acoustic insight directly into these settings."
Would you recommend this technology to others?
"Yes, without hesitation. Whether someone is a very experienced acoustician or new to the field, Microflown is a strong partner. They offer reliable and innovative technology while remaining flexible and closely involved, from early concept stages through execution, and even into publications and conference presentations."
In-situ Sound Absorption testing