DIV-01
Architectural & Building Acoustics
Room acoustics, reverberation time optimization, sound transmission insulation in buildings, and auditorium concert hall acoustical design.
Auditorium DesignSTC TestingDiffusers
Founded 31 July 1971
Registered Scientific Society · Visakhapatnam
Member of the International Commission on Acoustics (ICA)
National Scientific Body · Est. 1971
Advancing the Science and Engineering of Sound
The Acoustical Society of India brings together researchers, engineers, educators and professionals to advance acoustics through research, knowledge exchange and collaboration across physical, architectural, environmental and underwater domains.
National calibration & sound field characterization
f: 20 Hz – 20 kHz
Institutional Foundation
Promoting Acoustics in India Since 1971
The Acoustical Society of India (ASI) is the national multidisciplinary organization uniting physicists, acoustic engineers, architects, audio specialists, oceanographers and medical acousticians from scientific institutions, defence research establishments and industrial laboratories.
Established and registered at Visakhapatnam on 31 July 1971, the Society works for “the advancement of science and technology of all branches of acoustics”, coordinating the annual National Symposium on Acoustics (NSA) and publishing original, refereed research in the Journal of the Acoustical Society of India (JASI).
An active member of the International Commission for Acoustics (ICA), the Society sustains national reach through its local chapters, student network and institutional membership across Indian industry.
Signal Processing & Transducer Standards
f: 20 Hz – 20 kHz
Acoustic signal analysis, frequency response testing and microphone calibration at an affiliated acoustics laboratory.
1,140+Members · as reported 2025
30Local Chapters
43Institutional Members
52Symposia Held (NSA Series)
Disciplines & Specializations
Areas of Acoustical Science
From fundamental physical theory to advanced structural and marine applications, the Society's network spans the major scholarly divisions of acoustics and fosters focused technical innovation.
DIV-02
Environmental Noise & Control
Urban acoustics, industrial machinery noise mitigation, noise mapping, traffic barrier modelling, and occupational exposure standards.
Noise MappingdB(A) LimitsSilencers
DIV-03
Underwater Acoustics
Sonar propagation modelling, ocean ambient noise, marine bioacoustics, subsurface communication, and bathymetric acoustic telemetry.
Sonar SystemsBioacousticsHydrophones
DIV-04
Ultrasonics & Non-Destructive Testing
High-frequency wave propagation, ultrasonic flaw detection in materials, diagnostic biomedical ultrasound, and acoustic cavitation.
NDT InspectionPhased ArrayPiezoelectric
DIV-05
Vibration & Structural Acoustics
Mechanical structural resonance, damping systems, seismic wave attenuation, modal analysis, and elastodynamic wave interaction.
Modal AnalysisVibro-AcousticsIsolation
DIV-06
Speech, Hearing & Perception
Psychoacoustics, clinical audiology, phonetic acoustic spectra, speech synthesis algorithms, and auditory processing research.
PsychoacousticsPhoneticsAudiology
Acoustic Measurement & Instrumentation DIV-07
Microphone calibration, sound level meter precision metrology, impedance tube measurement, acoustic intensity probes, and ISO/BIS standards verification.
CalibrationSound Level MetersFFT Analyzers
Scientific Gatherings
View Event Schedule
Conferences & Symposia
Fostering research dissemination through national and international scientific gatherings since 1971.
Completed Symposium
Sep 2024
NSA-2024 — National Symposium on Acoustics
Convened at the Naval Science and Technological Laboratory (NSTL), DRDO, with Convener Dr V Rama Krishna, Scientist-F, and papers contributed by members nationwide.
Visakhapatnam, DRDO-NSTL
Details
Society Tradition
Since 1971
Annual NSA · Next Edition
The National Symposium on Acoustics is convened annually. No new session is currently announced on the official record; check the events page for updates.
Rotating National Venues
Schedule
Scholarly Records
1971–Present
Historical Symposia Archive (NSA Retrospective)
Over five decades of published national symposia proceedings, technical abstracts, papers and Society records.
52 Editions
Browse
Official Peer-Reviewed Periodical
Journal of the Acoustical Society of India
JASI · First issued January 1973
The flagship publication of the Society, JASI is a refereed journal of the Acoustical Society of India — a non-profit national society founded in 1971 — dedicated to theoretical and applied acoustics, spanning physics, engineering and the acoustical sciences.
Issue Index Highlights
Archive Index →
JASI · Vol. 1, No. 1
Founding Issue
Journal of the Acoustical Society of India — Inaugural Issue
Published the full text of the Memorandum of Association and the Rules & Regulations of the newly constituted Society.
January 1973Verified archive record
JASI · Vol. 43
Library Record
Volume 43 (2016)
Volume 43 of the journal held by international library catalogs, evidencing continuous publication through 2016.
2016Verified library record
JASI · Recent Volumes
Secretariat Access
Recent Issues & Symposium Proceedings
Recent volumes are maintained by the Secretariat; symposium selections appear in JASI and Springer lecture proceedings.
2017 – presentHow to obtain
Professional Fellowship & Growth
Membership Pathways
Join India's national acoustical community. Connect with academicians, industrial specialists and scientists while contributing to national technological advancement.
Prestigious
Life Members (LM)
Researchers, professors and practicing professionals with postgraduate engineering or physics qualifications and demonstrated acoustics experience, joining the Society's permanently enrolled status.
- Permanent enrolled status
- Standing membership of the Society's rolls
- Engagement through NSA symposia and the Secretariat
Dues per the Society's current schedule
Apply for Life Status
Practicing
Annual Members (AM)
Practicing engineers, architectural consultants, audio technicians and scientific officers actively working in acoustics-related industries.
- Renewable annual enrolment
- Receipt of society notices
- Participation in the Society's symposia
Dues per the Society's current schedule
Join as Annual Member
Academic
Student Members (SM)
Undergraduate, postgraduate and PhD scholars enrolled in physics, mechanical engineering, speech & hearing and allied scientific degrees.
- Enrolment in the Society's student category
- Participation pathways at NSA symposia
- Engagement with the Society's research community
Concessional dues for scholars
Student Registration
Corporate
Institutional & Corporate
Defence laboratories, national universities, acoustic equipment manufacturers, testing agencies and R&D organizations.
- Institutional enrolment in the Society's network
- Delegate participation in NSA symposia
- Coordination through the Secretariat
Institutional rates on application
Institutional Enrolment
Already an active ASI Member?
Update membership credentials, confirm renewal status or request member records through the Secretariat.
Honours & Laureates
Awards & Memorial Lectures
Recognitions recorded on the Society's own printed pages and brochures, with the recipient rolls transcribed into the honours directory.
Journal Award
Sir C.V. Raman Award
For the best paper published in the Journal of the Acoustical Society of India. The Society's archived awards page prints the roll of honoured papers from 1978–79 through the 2015 selection.
Documented Record
1978–79 → 2015 · archived roll
Lifetime Achievement
Prof. S. Bhagavantam Award
For outstanding contribution and leadership provided in the field of acoustics, listed across two-year terms from 1981–82 through 2013–14 and named for the Society's founder President.
Documented Record
1981–82 → 2013–14 · archived roll
Orations
NSA Memorial Lectures
Two standing orations anchor the National Symposium programme: the M.S. Narayanan Memorial Lecture and the Prof. Rais Ahmed Memorial Lecture, recorded in the NSA-2024 brochure.
Documented Record
Recorded · NSA-2024 brochure
Recipient rolls are transcribed from the Society's archived awards pages and printed brochures. View the full recipient rolls →
Notices & Gazettes
Archive Announcements
News & Society Announcements
IISA 2025 / NSA-52: Full Papers & Extended Abstracts Schedule
The symposium program for the 52nd NSA at KIIT Gurugram followed a structured submission and peer-review calendar across 2025.
Due dates: June–September 2025
Read Notice
Society Records & Website Maintenance Notice
The Society's official website has been undergoing maintenance; society-related queries continue to be handled by the Secretariat contact.
Ongoing Secretariat channel
Read Notice
NSA-2024 Call for Papers: NSTL (DRDO) with ASI at Visakhapatnam
The 51st National Symposium on Acoustics was organized by NSTL (DRDO) under the aegis of ASI, with 'Sustainable Acoustics' as its special theme.
Record: printed brochure, NSTL (DRDO)
Read Notice
Five Decades of Scholastic Heritage
Historical Milestones
Archived Historical Registry: 1971–2025
Full Historical Record
1971
Inaugural Foundation
Established and registered at Visakhapatnam on 31 July 1971 under the convenorship of Prof. S. Bhagavantam, following the January symposium “Acoustics in Education” at Andhra University.
1973
JASI Journal Launch
Publication of the first issue of the Journal of the Acoustical Society of India (JASI), Vol. 1 No. 1, cementing a refereed publication channel for Indian acoustics research.
2021
Fifty Years of ASI
Five decades of advancing acoustics science, education and engineering practice across the country, marked in the Society's golden-jubilee year.
2025
IISA 2025 — 52nd NSA
The National Symposium on Acoustics reached its 52nd edition as the India International Symposium on Acoustics at KIIT College of Engineering, Gurugram, sponsored by ICA and ASA.