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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.

People praise Army for protecting

Jammu and Kashmir Chief Minister Omar Abdullah interacts with displaced border residents at a shelter camp.
Jammu and Kashmir Chief Minister Omar Abdullah interacts with displaced border residents at a shelter camp.

Garkhal (J&K): Men and machines of the armed forces worked meticulously to ensure the interception of Kamikaze drones and missiles fired by Pakistani troops targeting Jammu, drawing widespread appreciation from people.


India on Thursday night swiftly thwarted Pakistan's fresh attempts to strike military sites with drones and missiles, including in Jammu and Pathankot, after foiling similar bids at 15 locations across the country's northern and western regions, amid a military conflict between the two neighbours.


Looking after the operational area of Jammu under the command of the 9 Corps, the 26 Infantry Division, nicknamed the "Tiger Division", had put in place a robust air-defence system, virtually carving out an Israel-type Iron Dome to protect Jammu from a Hamas-style attack by Pakistan.


An official who was privy to the developments said it was a meticulous combination of men and machines in defence that thwarted such a massive Pakistani attack.


In the dead of night, Pakistan unleashed its most audacious assault on Jammu since the 1971 war, deploying a swarm of more than a hundred Kamikaze drones and missiles in a sinister attempt to devastate the city. But what followed was a show of unmatched precision, courage and resilience.


"We are indebted to our armed forces who have saved Jammu from a major attack by Pakistan. We appreciate them for their missionary work. We never thought these bombs could be neutralised in the air," Garkhal resident Sikender Singh said.


Singh, whose family, along with more than 500 villagers, has shifted to safer camps set up by the government in Mishriwala on the Jammu outskirts, said had the bombs not been intercepted, they could have caused massive deaths and destruction.


Finest system

The Army, backed by one of the world's finest air-defence systems, intercepted the aerial barrage with astonishing accuracy -- virtually every hostile object was destroyed mid-air. Not a single vital installation was touched. Not a single civilian life was lost.


"Eight missiles from Pakistan were directed at Satwari, Samba, R S Pura and Arnia. All were intercepted and blocked by air-defence units. Visuals over Jammu reminded exactly of a Hamas-style attack on Israel, like multiple cheap rockets," an Army official said.


He said the Pakistan Army is operating and behaving like Hamas. "Drones were sighted at multiple places along the western front -- confirmed to be hostile. They are being effectively engaged by our air-defence systems. Pakistani drone attacks have been reported at various locations along the western borders and are being effectively countered by the Indian armed forces," he added.


The multi-tier air-defence system, with a twin technological security architecture of Russian and Israeli surface-to-air missile setups and the indigenous Akash, was a game changer against such attacks.


Former Jammu and Kashmir director general of police S P Vaid appreciated the armed forces and their technological security systems for effectively dealing with the Pakistani attacks.


He said 50 to 60 air attacks by Pakistan over Jammu and other places were neutralised on Thursday night by the impregnable air-defence system of the country.


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