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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.

Bad Roads, Ugly Politics


The pathetic state of roads in Mumbai city as well as its suburbs has made daily commute a dangerous affair. The residents are miffed with the BMC over its lackadaisical attitude. Mumbaikars tweet photos, post videos to grab attention, but everything is in vain. Who cares for the common people. Backbreaking journeys have become part and parcel of life. Political leaders are busy mud-slinging.


This year the monsoon took a break after almost four and half months. During this time some of the roads virtually became non commutable. It may be recalled that the Chief Minister Eknath Shinde first announced to make Mumbai roads pothole free.


Its almost two years now the BMC has concretised only 9 percent of roads it planned to concretise. This decision was taken when it came to light that due to the properties of bitumen in asphalt roads, potholes are a regular occurrence due to contact with water during monsoons.


Hence, to solve the problem of potholes, the corporation has adopted a policy of cement concreting of 6-meter-wide roads in phases. The decision was taken but the dilly-dallying affair made things more difficult.


Mumbai’s traffic does put a lot of strain on roads which is not the case in the other developed countries. Second most important aspect is concretisation of roads is done partly and in phases.


The worst problem which is faced is repeated digging for cables and drainage, which weakens the roads. Above all corruption in BMC makes matters worse as a result everything comes to grinding halt.


According to experts, repairing potholes is a reaction with symptomatic treatment. By and large we are dispensing superficial treatment without addressing the root cause. The long-term solution will be to have roads with no potholes but what we need is the means and technology to achieve this. But for this political will is necessary which we lack on every step.


Mumbaikar’s are convience that corruption in the municipal corporation is the main reason. Contractors have had a monopoly over the last 20 years and this is the reason why reputed companies never come ahead for these projects.


As a result, in the name of attendance and repair, the BMC does shoddy work. Crores are spent but the end result is nothing. The BMC is not paying attention to the crust. If the crust is weak, potholes will see an increase. Without any thought or technical know-how, potholes are filled with cold mix.


This is the reason why the city and suburbs continue to have craters on the roads.


Craters, a serious threat to the safety and security of people. Mumbaikars fade up from their repeated visits to orthopedic surgeons.


They are in a mood to teach a proper lesson to those who were at the helm of the affairs.

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