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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.

Assertive Statecraft

Updated: Oct 22, 2024

Unlike earlier Indian External Affairs Ministers who, by and large, favoured a more measured tone when dealing with restive neighbours and India’s adversaries, S. Jaishankar’s approach has been unapologetically firm. He sets himself apart from his predecessors with a style of diplomacy that is both assertive and unflinching. Whether dealing with Pakistan’s cross-border terrorism or China’s military provocations, Jaishankar’s diplomacy merges strategic patience with sharp critique - a style that contrasts sharply with more reconciliatory stances of yore.


Consider his recent remarks at the 23rd Meeting of the SCO Council of Heads of Government in Islamabad. Jaishankar did not mince words, emphasizing that terrorism and extremism, often sponsored by Pakistan, hinder the region’s trade and connectivity. While former ministers like S.M. Krishna or Pranab Mukherjee might have opted for more diplomatic phrasing, Jaishankar had no inhibitions in openly calling out the “three evils” - terrorism, extremism and separatism. His blunt message was that trade and cooperation cannot flourish amidst violence, and India will not compromise on this principle.


This hard-line stance shows that India’s foreign policy has come of age. Previous ministers often focused on backchannel diplomacy and confidence-building measures, hoping to bring Pakistan to the table. Jaishankar, however, has raised the stakes, making it clear that the onus lies entirely on Islamabad. He has effectively drawn a red line, signalling that India’s patience for half-hearted promises of peace has worn thin.


His handling of China has been no less firm. Since the 2020 Galwan clashes, relations between India and China have been frosty, with border standoffs straining ties. While earlier ministers like Jaswant Singh sought to expand diplomatic channels and avoid direct confrontation, Jaishankar’s bolder approach has been to reduce India’s cooperation with Beijing to a bare minimum. At the SCO Summit, he underscored the importance of territorial integrity and mutual respect - an implicit but clear jab at Chinese expansionist ambitions. His message was that until Beijing respects India’s sovereignty, meaningful cooperation is off the table.


His remarks on Canada, delivered in response to Canada’s mishandling of separatist elements celebrating the assassination of former Indian Prime Minister Indira Gandhi last year, demonstrate his willingness to confront far-flung Western powers. Jaishankar’s critique of Canadian PM Trudeau’s “vote bank politics” and the platform Canada has given to extremist Khalistan elements was a striking departure from the caution exercised by earlier ministers when dealing with Western democracies. Where former ministers might have chosen to tread lightly to preserve strategic partnerships, Jaishankar took a confrontational stand, calling out Canada’s complicity in nurturing forces that harm India’s unity. This approach underscores that India will no longer passively accept the actions of others, whether they be rooted in vote bank politics or geostrategic manoeuvring.

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