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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.

Warriors of Night

Updated: Oct 22, 2024

We name our daughters Durga, Lakshmi and Saraswati; we worship the divine feminine power in the temples but oppress, repress and even attack the feminine power amidst us. That is the irony in the way India sees its women.

After the safety of the daylight fades, women are seen as easy prey by the predators of the night.

We mark the nine nights of Navratri, the festival of the goddess, by celebrating the dedication and valour of nine real-life women who brave the challenges of the night to pursue their dreams.


Part - 4


Never felt unsafe

The singer says there has been a generational change over the last two decades

Never felt unsafe

Work has no timings for Aisha Sayed. Sometimes, she begins her studio recording at 12 AM and finishes by 5 AM; at other times, concerts and live shows start at 9 AM and she’s done by midnight. In her field of work as a performer and singer, Sayed is used to not getting a night’s sleep and often returning home when most of the city is set to wake up. “I have been travelling at night but I have never, ever, felt unsafe in Mumbai,” says the singer-performer who began her career at the age of 13 years. Her father spotted her talent for music and took her to meet a sound engineer who was their neighbour in Bandra. The family helped her get opportunities and from there, her career began.

Being among the top contenders in Indian Idol, season 3, in 2007 catapulted her to fame and it opened up a world of new performance opportunities across the country. “I was just 20 years then and I was travelling the world, performing at the most lavish weddings, staying at the most luxurious hotels and performing at big corporate gigs,” she says. Safety, while on work, is has never been an issue for her for the organizers arrange a security detail for the performers. “They escort us until we reach the room. And since we travel with our team in a big group, there is always safety in numbers,” says Sayed, who sings in 10 languages. Her peers have faced instances of audience members being rowdy. “Once in Delhi, a group of drunk men followed my colleague to her room and kept banging on her door late into the night. But I have been fortunate,” she says.

Work assignments have taken to varied places, from the most luxurious international destinations to far-off venues in the hinterland of India where she’s travelled through dark, dense forested areas. “I have driven through areas where the only light is that of your car’s headlights. Turn around and you see pitch darkness,” says Sayed. She’s always got a little prayer on her lips when travelling through these remote areas for miles together. She recalls a show in Chattisgarh where she had to travel for nine hours at a stretch through remote and forested areas. “No place in our country is as safe as Mumbai,” she stresses. She would know, considering her extensive travels. She advises women to travel in groups while in places that are unfamiliar or unknown and never to venture out at night alone. “Keep your family informed of your whereabouts,” she says.

While her agreements state that proper security at all times, Sayed says that she drives her own car if she’s out at night for parties or personal work but insists that the people of Mumbai are largely helpful and cooperative. A rickshaw driver who once drove to home in the wee hours of the night, after a recording, waited at her gate until the watchman let her in. Friends and colleagues have dropped her home several times.

Mumbai, she feels, has changed—and it’s for the better, in the past two decades. “Earlier, on buses and trains, men would use the crowd as an excuse to touch women inappropriately. That has gone down. There is a generational change that I see,” says Sayed. She used to take the BEST buses and trains to her training classes and for recordings in the early days of her career.

Her timings are inconsistent and her shows take her to various cities and towns. But the Mumbai-bred girl emphasizes that her city is very safe for women, despite the various incidents of violence. “Mumbai is the only place where a woman can wear what she wants, wear bright red lipstick, leave her hair open and look glamorous and still be safe.”

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