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By:

Rajendra Joshi

3 December 2024 at 3:50:26 am

Proud moment for Shivaji University researchers

Indian patent for portable sound absorption testing device Kolhapur: Researchers from Shivaji University, Kolhapur, have developed a portable sound absorption testing device that can scientifically assess whether an installed sound system and its acoustic treatment are functioning effectively. The innovation has been granted an Indian patent, marking a first-of-its-kind development in this field, the university said on Thursday. The patented device, named the Portable Sound Absorption Tester,...

Proud moment for Shivaji University researchers

Indian patent for portable sound absorption testing device Kolhapur: Researchers from Shivaji University, Kolhapur, have developed a portable sound absorption testing device that can scientifically assess whether an installed sound system and its acoustic treatment are functioning effectively. The innovation has been granted an Indian patent, marking a first-of-its-kind development in this field, the university said on Thursday. The patented device, named the Portable Sound Absorption Tester, has been developed by senior chemist Dr Kalyanrao Garadkar of Shivaji University, along with Dr Sandeep Sable and Dr Rohant Dhabbe of Jaysingpur College, and Dr Chandrala Jatkar of the D K T E Society’s Textile and Engineering Institute, Ichalkaranji. The device is designed to test the sound absorption capacity of professional acoustic systems used in recording studios, theatres, auditoriums and soundproof chambers. Until now, the effectiveness of such sound-absorbing installations has largely been assessed through experience and trial-and-error after installation. The newly developed portable tester allows for immediate and scientific evaluation of sound absorption performance once the system is installed. Sound-absorbing sheets and panels are widely used in theatres, studios and vocal recording rooms to absorb echo around microphones and create a controlled acoustic environment, enabling cleaner and more professional audio output. The new device can be used to evaluate a wide range of absorbers, including perforated foam, fibre, fabric, membranes, panels and resonant absorbers, helping improve the quality and effectiveness of acoustic materials. Explaining the working of the device, Dr Garadkar said that the human audible frequency range extends from 20 Hz to 20 kHz. The device generates sound waves within this spectrum and projects them onto the acoustic material under test. The sound waves that are not absorbed are detected by a microphone and displayed on the screen in the form of current or voltage readings. This enables users to instantly determine whether the sound absorption system is functioning as intended and make corrective interventions if required. The researchers said the device would also be useful for those engaged in acoustic fabrication and sound absorption research. Apart from being portable and easy to transport, the device is also cost-effective, making it suitable for field applications. The team expressed confidence that it would prove highly useful in the sound system testing sector. Shivaji University’s in-charge Vice-Chancellor Dr Suresh Gosavi and in-charge Pro Vice-Chancellor Dr Jyoti Jadhav congratulated the research team on securing the patent.

The Vanishing Green: Rethinking Development in India

Updated: Mar 17, 2025


Aravalli

The Aravalli mountain range, stretching over 700 kilometres across northwestern India, has long stood as a natural bulwark against the relentless creep of the Thar Desert. These ancient hills, among the oldest geological formations on the planet, cradle vital rivers - the Chambal, Sabarmati, and Luni - that sustain millions. Yet today, the Aravallis are under siege. Centuries-old forests are disappearing, groundwater reserves are dwindling, and once-thriving lakes have shrunk into memory. Mining, livestock grazing and human encroachment have gnawed away at the range’s resilience, accelerating desertification and imperilling the fragile ecological balance.


In response, the Indian government has announced the Aravalli Green Wall Project, an ambitious attempt to restore over 800,000 hectares of degraded forest land in its first phase, with a budget of Rs. 16,053 crore. The initiative seeks to construct a green buffer, rewilding vast swathes of land to arrest environmental collapse. It is a necessary corrective, but also a sobering reminder of the damage already done.


Elsewhere in India’s northern states, the pattern repeats with tragic familiarity. In Himachal Pradesh, rapid highway construction has severed the delicate thread between progress and preservation. In Joshimath, Uttarakhand, a holy town precariously perched on unstable terrain, the ground itself has begun to give way. Roads and homes have fractured, the land beneath them sinking under the weight of unchecked expansion. Official reports attribute the crisis to natural causes - subsidence, the slow settling of the earth - but experts insist that human hands have hastened the disaster.


The mountains of Uttarakhand and Himachal Pradesh were never meant to bear the full brunt of unrelenting development. Composed largely of sedimentary rock and soil-rich terrain, they depend on dense forests to anchor their slopes. These trees, centuries-old sentinels, hold the earth in place, absorb rainfall, and prevent landslides. Yet the march of infrastructure in form of highways slicing through virgin wilderness, commercial townships sprawling where forests once stood, has stripped them bare. Without their protective cover, the mountains crumble, and with them, the settlements that cling to their slopes.


This tension between development and destruction is hardly new, but it has become increasingly dire. The logic of progress, when left unchecked, often tramples the very foundations it seeks to build upon. Growth demands roads, power plants, and industries, but it cannot afford to ignore the ecosystems that sustain human life. The Green Wall Project is an attempt to reconcile these competing interests, yet its very existence underscores a broader failure: the inability to integrate sustainability into the blueprint of development itself.


The irony is glaring. In one part of the country, forests are being planted to mitigate environmental degradation, while in another, they are being sacrificed in the name of expansion. The lesson of Joshimath, of Himachal’s eroded hillsides, and of the Aravallis’ slow decline is not that development must cease, it is that it must be redefined.


Sustainable development cannot remain a lofty ideal confined to policy documents and global summits. It must be a living principle, embedded in every infrastructure blueprint, every economic plan, every decision that shapes the land. Climate change has already transformed large swathes of India into a furnace of droughts, floods and searing heatwaves. If forests are the lungs of the planet, then India’s rapid deforestation is a slow but deliberate act of suffocation.


The Aravalli Green Wall Project is a start, but it must not be an isolated effort. India stands at a precipice, where the price of progress can no longer be measured solely in GDP figures and kilometres of paved roads.


(The author is a journalist based in Dehradun.)

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