Shivaji University Researchers Pioneer Portable Sound Absorption Testing Device
In a significant advancement for acoustic engineering, researchers from Shivaji University, Kolhapur, have successfully developed a groundbreaking portable device capable of scientifically assessing the effectiveness of installed sound absorption systems. This innovation, named the Portable Sound Absorption Tester, has recently been granted an Indian patent and is being celebrated as a major breakthrough in professional sound-testing technology.
Collaborative Development and Key Applications
The device was meticulously developed by a team of experts led by senior chemist Dr. Kalyanrao Garadkar of Shivaji University. He collaborated with Dr. Sandeep Sable and Dr. Rohant Dhabbe from Jaysingpur College, along with Dr. Chandrala Jatkar of the DKTE Institute in Ichalkaranji. Historically, the efficiency of sound absorption systems in environments such as recording studios, theatres, and auditoriums has been evaluated primarily through subjective experience rather than precise scientific measurement. The newly introduced tester revolutionizes this practice by providing immediate and accurate performance evaluations right after installation—a capability achieved for the first time in the field.
How the Device Works and Its Technical Specifications
Dr. Garadkar explained that portable sound-absorbing sheets and panels are widely utilized in studios and vocal recording settings to establish acoustically "quiet" spaces by minimizing echoes and resonance around microphones. This results in clearer, more professional-quality sound for both vocals and instruments. The Portable Sound Absorption Tester is designed to assess a broad spectrum of noise-control absorbers, including porous foams, fibres, fabrics, membranes, panels, and resonant absorbers. Additionally, it aids in enhancing the quality of sound-absorbing materials used to reduce echo. Its compact and lightweight design ensures ease of portability and economic viability for various users.
The device operates within the human audible frequency range of 20Hz to 20kHz. It generates sound waves across this entire spectrum and directs them at the material under evaluation. Any unabsorbed sound waves are captured by an integrated microphone and displayed on the device's screen as current or voltage values. Based on these real-time readings, users can instantly determine whether the sound absorption setup is performing as required. Dr. Garadkar emphasized that this tester is also poised to become an invaluable tool for researchers focused on advancing sound-absorber fabrication technologies, fostering further innovation in acoustic materials.
Implications for the Industry and Future Prospects
This development marks a pivotal shift from reliance on experiential judgment to data-driven assessment in acoustic management. By enabling precise measurement, the Portable Sound Absorption Tester not only improves the quality of sound in professional environments but also supports cost-effective optimization of soundproofing solutions. Its introduction is expected to benefit audio engineers, architects, and material scientists alike, paving the way for enhanced acoustic design standards globally.
