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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.

'Inconvenient data brushed aside': Congress slams Centre over World Bank's extreme poverty data

  • PTI
  • Jun 10, 2025
  • 2 min read

NEW DELHI: The Modi government is celebrating a drop in extreme poverty to 5.3% but this is based on a poverty line of USD 3 per day which is certainly not enough to live with dignity, the Congress said on Tuesday and accused the Centre of brushing aside "inconvenient data."


The opposition party's assertion came after the World Bank said India's extreme poverty rate declined sharply to 5.3 percent over a decade from 27.1 percent in 2011-12. The World Bank revised upwards its threshold poverty line to USD 3 per day.


Congress' media and publicity department head Pawan Khera said, "The Modi government is celebrating a drop in extreme poverty to 5.3%. But this is based on a poverty line of USD 3 (Rs 250) per day - just enough to avoid starvation, but certainly not enough to live with dignity."


The 2022-23 Consumption Expenditure Survey, conducted after an 11-year gap, came with a revised methodology – making direct comparisons with the UPA-era data appear favourable, but statistically invalid, Khera said.


"The 2017-18 survey was buried, likely to hide the fallout of demonetisation and GST. COVID-era poverty? Ignored," he said.


Meanwhile, the Modi government evaded Parliament on defining an official poverty line and ignored over 15 questions related to it, Khera claimed.

"Their claim of lifting over 25 crore people out of poverty is based on a manipulated index. CMIE data shows 621 million Indians (44%) still live in poverty. On the Global Hunger Index, India ranks 105th, with 18.7% child wasting and 35.5% stunting," Khera said.


He pointed out that on the World Happiness Report, India sits at 118th, and on the Human Development Index, India loses over 30% of its score due to inequality.


"All this is inconvenient data. So, it is brushed aside. In the end, the poor are left to endure inflation, unemployment, a steady collapse of public services and declining quality of life while the ruling party's crony capitalist friends loot thousands of crores with absolute impunity," Khera said.


"This is the story of two India: One that suffers, and the other that cashes in," he added.


The World Bank, in a report, said given India's inflation rate between 2017 and 2021, a revised extreme poverty line of USD 3 would constitute a 15 percent higher threshold than USD 2.15 expressed in 2021 prices and result in a 5.3 percent poverty rate in 2022-23.


As against 34 crore people below poverty line (USD 3/per day) in 2011-12, the numbers have come down to 7.5 crore in 2022-23 in absolute numbers.


The World Bank has announced a major revision to global poverty estimates, raising the International Poverty Line (IPL) from USD 2.15/day (2017 PPP) to USD 3/day (2021 PPP), according to a factsheet issued by the Press Information Bureau (PIB) on the report.


"While the change led to a global increase in the count of extreme poverty by 125 million, India emerged as a statistical outlier in a positive direction. Using more refined data and updated survey methods, India not only withstood the raised threshold but also demonstrated a massive reduction in poverty," the PIB said in its factsheet details issued on Saturday.

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