Papers by Ajinkya S Umbarkar
Sound&Vibration, 2022
Here we report first ever study on acoustical evaluation of Kanheri Caves located in Sanjay Gandh... more Here we report first ever study on acoustical evaluation of Kanheri Caves located in Sanjay Gandhi National Park, Mumbai (Maharashtra, India). These caves are dated to a period between 2 nd century BCE to 7 th century CE. In this study we used an ambisonic recorder to capture Impulse Response, which carries acoustic signature of the place. Out of total 109 caves 41 were surveyed in available time. Out of those reverberant environment was noted in 12 caves. Measurements were made only in 3 caves (Cave Nos. 1, 3, 11) which are important. In the beginning we carried out an FFT analysis. We then studied room acoustic parameters like Reverberation Time, Early Decay Time, Clarity, Definition, etc., based on the measurement of Impulse response. Cave No. 3 have high value of reverberation time, compared to other. Therefore it also have lower clarity compared to others. It is properties needs to be compared with similar structures (chaityas) in Maharashtra (at Ajanta, Ellora, Nashik, Junnar, etc.) and elsewhere in India. It is worthwhile to carry out further research in Cave No. 3 with more sophisticated instruments as well as 3D modeling. Since the experiment was performed with receiver at only one position, we also suggest to carry out experiment with receiver at multiple positions and then comparing them.
Sound & Vibration, 2022
Here we report first ever study on acoustical evaluation of Kanheri Caves located in Sanjay Gandh... more Here we report first ever study on acoustical evaluation of Kanheri Caves located in Sanjay Gandhi National Park, Mumbai (Maharashtra, India). These caves are dated to a period between 2 nd century BCE to 7 th century CE. In this study we used an ambisonic recorder to capture Impulse Response, which carries acoustic signature of the place. Out of total 109 caves 41 were surveyed in available time. Out of those reverberant environment was noted in 12 caves. Measurements were made only in 3 caves (Cave Nos. 1, 3, 11) which are important. In the beginning we carried out an FFT analysis. We then studied room acoustic parameters like Reverberation Time, Early Decay Time, Clarity, Definition, etc., based on the measurement of Impulse response. Cave No. 3 have high value of reverberation time, compared to other. Therefore it also have lower clarity compared to others. It is properties needs to be compared with similar structures (chaityas) in Maharashtra (at Ajanta, Ellora, Nashik, Junnar, etc.) and elsewhere in India. It is worthwhile to carry out further research in Cave No. 3 with more sophisticated instruments as well as 3D modeling. Since the experiment was performed with receiver at only one position, we also suggest to carry out experiment with receiver at multiple positions and then comparing them.
Proceedings of NSA, 2019
In the last 30 years or so there have been a growing interest among scientist, archaeologist abou... more In the last 30 years or so there have been a growing interest among scientist, archaeologist about the study of sound in sacred and worship places. Such kind of studies now comes under area known as ‘Archaeoacoustics’. In India such studies started to take shape in
the 1991-2000 decade, and growing since then. Here we are presenting work carried on 4 temples in Nagpur (Maharashtra, India) namely – Kalyaneshwar Shiva Mandir (in Telankhedi), Nageshwar Shiva Mandir and Laxminarayan Mandir (both in Mahal), Bhonda Mahadev (Sitabuldi).
Experiments were done with an ambisonic recorder. How ambisonic technique is useful is also discussed.
Itihasachya Paulkhuna Diwali Issue (2nd Year), 2020
In this article I took an overview of existing astronomical and meteorological records from the l... more In this article I took an overview of existing astronomical and meteorological records from the letters, chronological accounts of Maratha period.
I am thinking to bring out an english version also, may be for a journal.
इतिहासाच्या पाऊलखुणा । दीपावली Special Issue, 2019
In this article i discuused a short overview of genetic and archaeological history in India.
Tho... more In this article i discuused a short overview of genetic and archaeological history in India.
Those who cant read marathi they may refer to references mentioned in it. Those are in english and available on internet.
This short note discusses the celestial events and their dates mentioned in 3 papers in it.
In the last 30 years or so there have been a growing interest among scientist, archaeologist abou... more In the last 30 years or so there have been a growing interest among scientist, archaeologist about the study of sound in sacred and worship places. Such kind of studies now comes under area known as 'Archaeoacoustics'. In India such studies started to take shape in the 1991-2000 decade, and growing since then. Here I am presenting work carried on 4 temples in Nagpur (Maharashtra, India) namely -Kalyaneshwar Shiva Mandir (in Telankhedi), Nageshwar Shiva Mandir and Laxminarayan Mandir (both in Mahal), Bhonda Mahadev (Sitabuldi). Experiments were done with an ambisonic recorder. How ambisonic technique is useful is also been discussed.
WESPAC 2018 is a multidisciplinary conference dedicated for various branches in Acoustics. Confer... more WESPAC 2018 is a multidisciplinary conference dedicated for various branches in Acoustics. Conference site is provided in the beginning of this document. Otherwise it can be googled. Conference will take place on 11 to 15 November,2018 in New Delhi, India. Venue: National Physical Laboratory
This docmuent consists title and abstracts of some interesting work related to music, acoustical investigation of ancient structures, speech etc.
In Bharat there are historical records of transits, occultation and eclipses. It was done by astr... more In Bharat there are historical records of transits, occultation and eclipses. It was done by astronomers and non astronomer peoples from country. Here I am attempting to give this account with considerably good and accurate parameters of those observation (in modern context).
Review of dates/phenomenon published in the paper 'Possible errors.....' by M Apte et al IN Curr... more Review of dates/phenomenon published in the paper 'Possible errors.....' by M Apte et al IN Curr Sci vol 84 10 Jan 2003, pp 21-22
This is an extended version of last short write up of the talk which i uploaded few days ago. ... more This is an extended version of last short write up of the talk which i uploaded few days ago. The above article is a general article written for everyone.
A Short write-up of talk delivered at Central India Research Institute,Nagpur on 19 June 2015
Presentations by Ajinkya S Umbarkar
Talks by Ajinkya S Umbarkar
A presentation delivered on Aryabhata at CIRI (Central India Research Institute),Nagpur.
Teaching Documents by Ajinkya S Umbarkar
Uploads
Papers by Ajinkya S Umbarkar
the 1991-2000 decade, and growing since then. Here we are presenting work carried on 4 temples in Nagpur (Maharashtra, India) namely – Kalyaneshwar Shiva Mandir (in Telankhedi), Nageshwar Shiva Mandir and Laxminarayan Mandir (both in Mahal), Bhonda Mahadev (Sitabuldi).
Experiments were done with an ambisonic recorder. How ambisonic technique is useful is also discussed.
I am thinking to bring out an english version also, may be for a journal.
Those who cant read marathi they may refer to references mentioned in it. Those are in english and available on internet.
This docmuent consists title and abstracts of some interesting work related to music, acoustical investigation of ancient structures, speech etc.
Presentations by Ajinkya S Umbarkar
Talks by Ajinkya S Umbarkar
Teaching Documents by Ajinkya S Umbarkar
the 1991-2000 decade, and growing since then. Here we are presenting work carried on 4 temples in Nagpur (Maharashtra, India) namely – Kalyaneshwar Shiva Mandir (in Telankhedi), Nageshwar Shiva Mandir and Laxminarayan Mandir (both in Mahal), Bhonda Mahadev (Sitabuldi).
Experiments were done with an ambisonic recorder. How ambisonic technique is useful is also discussed.
I am thinking to bring out an english version also, may be for a journal.
Those who cant read marathi they may refer to references mentioned in it. Those are in english and available on internet.
This docmuent consists title and abstracts of some interesting work related to music, acoustical investigation of ancient structures, speech etc.