sound air waves: digitisation in indian society
TRANSCRIPT
SOUND AIR WAVES: DIGITISATION IN INDIAN SOCIETY
Mira K DesaiAssociate Professor & I/C Head
University Department of Extension Education, SNDT Women’s University, Juhu Campus,
Mumbai
Sound in Human Existence
Fourth Industrial Revolution• 1st : Water and Steam to
mechanise production• 2nd : Electric power for mass
production• 3rd : Electronic & IT to
automate production• 4th : Digital Revolution
[Source: World Economic Forum http://www.weforum.org ]
Sound to Audio.....Technological
Evolution
Digital Audio: Media & Processes• Music• Film• Television• Radio
• Recording• Transmission• Reception• Reproduction• Storage
Audio Recording Evolution
[Sound recording using mechanical devices]• ‘Acoustic era’ between 1877 to 1925 when
sound only from 250 Hz up to about 2,500 Hz • ‘Electrical era’ was from 1925 to 1945 till
television arrived. • ‘Magnetic era’ from 1945 to 1975 witnessed
developments of tapes. • ‘Digital era’ post-1975 but the word digital
came first time in 1938.
.WAV/WAVE
.AIF/AIFF/AIFC
Audio Formats
1988 1991 1993 1993
FILM
Digitalization in India
• 1995- Airwaves/Frequencies as ‘Public Property’• 1996- FM Radio licenses to private broadcasters• 2002/06 - Community radio movement in India,
Beginning of TV digitisation through CAS• 2012 - Analog sunset in four metros, 31 Dec 2016
new deadline for closing of analog TV in India• 2015 July- Launch of Dept of Electronics and IT,
GOI Digital India Project in three phases
NASSCOM India Leadership Forum 2015: Our Digital Future by Padmasree Warrior, CISCO, 12 Feb 2015 URL: http://www.slideshare.net/nasscom/nasscom-ilf-2015-44598308
Implications of Digitization• 4A: Anyone, Anytime, Anywhere, Anything• Oppotunities: Creation, Less space and more
Storage, Transmission, Consumption, Sharing and archiving, Giving VOICES
• Challenges: Infrastructure, Privacy, data ownership, Loss of formality and camouflaged connectivity, Lack of patience/depth, Temporariness, Losing Reality and lived virtuality.
