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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.

Man arrested for 'inflammatory' post on PM Modi in Karnataka

  • PTI
  • May 13, 2025
  • 1 min read


Bengaluru: A man was arrested for posting an inflammatory message on social media, questioning why Pakistan had not bombed Prime Minister Narendra Modi's residence in New Delhi, police said.



"Why is Modi's house not being bombed in the fight between India and Pakistan? It's Modi who is creating trouble for people who were living happily. First, you bomb Modi's house," Nawaz had posted on his Instagram page.


The accused was picked up following an uproar over the post, police said.


"A man named Nawaz had posted the message on Instagram. Based on his social media post, we registered a case at the Bandepalya police station. He was arrested yesterday, and we are producing him before a court today," Bengaluru Joint Commissioner of Police (East Division) Ramesh Bhanot told reporters.


Police are investigating the motive behind the post.


According to Bhanot, Nawaz hails from Electronic City but is currently residing as a paying guest in Bandepalya and works as a computer mechanic.


"Upon checking his antecedents, we found that he was previously arrested in Tumakuru in connection with an NDPS (Narcotic Drugs and Psychotropic Substances) case. We are investigating further," Bhanot added.


Meanwhile, posters surfaced in Bengaluru, allegedly put up by the Karnataka Pradesh Youth Congress, with slogans such as: `India is missing Indira', `Indira is the real Sindoor of India', `When borders burn, we miss the lady who drew the line', `The children of Mother India remember Durga', and `Indira would've ended it before it began'.


The posters were later removed from public spaces.

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