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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.

Lingua Pragmatica

Updated: Mar 20, 2025

As Southern leaders like M.K. Stalin rage against Hindi, Andhra Pradesh’s Chief Minister Chandrababu Naidu offers a model of pragmatism over parochialism.

Chandrababu Naidu
Andhra Pradesh

Amid the cacophony of opposition in southern states to Hindi, Andhra Pradesh CM N. Chandrababu Naidu has taken a markedly pragmatic stance by remarking recently in the state Assembly that there was no harm in learning other languages. Hindi, Naidu noted, was useful for communication across India, particularly in political and commercial hubs like Delhi. His remarks, though avoiding explicit mention of the NEP, were widely seen as an endorsement of multilingualism and a rebuke to the linguistic chauvinism that has gripped parts of the South.


Few issues in India stir political passions quite like language. It is not merely a means of communication but a marker of identity, a relic of colonial resistance, and a source of political mobilization. In the southern states, where anti-Hindi sentiment has long been entrenched, the National Education Policy (NEP) 2020 and its three-language formula have reignited old tensions. No state embodies this defiance more than Tamil Nadu, where the ruling Dravida Munnetra Kazhagam (DMK) led by M.K. Stalin has framed the policy as an assault on its linguistic autonomy.


Naidu’s words, welcomed by his ally and Deputy Chief Minister Pawan Kalyan, mark a sharp contrast with the DMK’s position. Tamil Nadu’s hostility towards Hindi dates back to the 1930s, when C. Rajagopalachari’s attempt to introduce it in schools met with fierce resistance. The anti-Hindi agitations of the 1960s cemented the DMK’s ideological stance, with its first Chief Minister, C.N. Annadurai, famously warning that Hindi imposition could push Tamil Nadu towards secession.


The question, however, is whether this rigid opposition serves Tamil Nadu’s interests. While Stalin, with an eye to the upcoming Tamil Nadu Assembly polls, has been relentlessly portraying Hindi as a threat to his state’s regional identity, Naidu, a partner of the BJP-led Centre, is framing it as a tool for economic mobility. His argument is not that Hindi should replace Telugu or English but that it offers a competitive advantage.


The economic case for multilingualism is compelling. Indians who speak multiple languages tend to have better job prospects, higher earnings and greater geographic mobility. Andhra Pradesh’s Telugu-speaking diaspora is a case in point. Telugus make up a significant proportion of Indian-origin professionals in the United States, the Gulf, and Southeast Asia as Naidu pointed out, hinting that this success story was built not on linguistic rigidity but on adaptability.


In a country where inter-state migration is rising and where Hindi remains the most widely spoken language, refusing to learn it amounts to self-imposed isolation. Tamil Nadu’s approach, by contrast, risks limiting its youth. The DMK government has refused to implement the three-language policy, keeping schools strictly bilingual with Tamil and English. Its justification that Hindi is not necessary for global success could be true in a narrow sense but ignores the domestic context. If Tamil filmmakers can dub their movies into Hindi to expand their audience, why should Tamil students be denied access to the language that could open more doors for them within India?


The DMK has accused successive central governments, particularly under the Bharatiya Janata Party (BJP), of pushing Hindi at the expense of regional languages. Yet, rejecting Hindi outright is an overcorrection. The reality is that Hindi is an important language in India’s economic and political landscape. Naidu’s position, one of accommodation rather than confrontation, offers a middle ground that other Southern leaders would do well to consider.


Some states already recognize this. Karnataka, despite its own history of linguistic pride, has allowed Hindi to be taught as an optional language. Kerala, whose migrants work in Hindi-speaking regions and the Gulf, has been less hostile to Hindi education. Naidu’s model, balancing regional identity with practical necessity, offers a way forward. Languages should be embraced, not politicized. Southern leaders would do well to listen to him.

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