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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.

Suspecting affair, man kills wife with a hammer in Noida



A 55-year-old man has allegedly killed his wife with a hammer in Noida, suspecting her of having extramarital affairs, officials said on Saturday. The accused, Nurullah Haider, reportedly struck his wife, Asma Khan, on the head during an argument, which led to her death, according to the police.


The incident happened on Friday in Sector 15 of Noida.


Asma Khan, 42, was a software engineer working at a private company in Noida’s Sector 62. She previously lived in Delhi and held an engineering degree from Jamia Millia Islamia. Haider, originally from Bihar, is also an engineering graduate but is currently unemployed.


The couple got married in 2005 and have two children — a son who is pursuing engineering and a daughter studying in Class 8.


Police said it was their son who first alerted them by calling the emergency number 112.


“As soon as we got the information, our team along with forensic experts reached the scene. We’ve taken the accused into custody and sent the victim’s body for post-mortem. Further investigation is ongoing,” said Deputy Commissioner of Police Rambadan Singh.


The initial probe suggests that Haider had long been suspicious of his wife’s fidelity.


“Their daughter called me this morning to tell me what happened. They had been fighting for days, but none of us thought he would go this far,” said the victim’s brother-in-law.

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