history of digital week3
TRANSCRIPT
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History of the Digital Revolu3on
Week #3: Quiz #1 & CD, DAT and Physical Digital Media
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TODAY
• Quiz #1 • Discuss one blog news story • Review Reading • Slide Show
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CHICKEN & THE EGG
• Which is more important? • Medium • Devices
• Function vs. Form • Do consumers care more about devices or media? • Why do music companies keep coming up with new devices? • Every new medium has always been more expensive than its predecssors
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DRIVERS
• Quality • Mono, Stereo, Quad, 5.1, 7.1, 9.1 • MP3 to 24/98 • Can consumers hear the difference?
• ProQit • Reselling the same music in new formats
• Value • How much can Qit on one product?
• Consumer Demand • Need vs. Want
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Timeline
1992 MiniDisc 1987
DAT Tape
1987 Sony DAT Walkman
1981 5.25” Floppy
Disk
1982 3.5” Floppy Disk
1982 Compact Disc
Billy Joel “52nd St”
1984 Sony Discman
1986 Double-‐Sided 3.5”
1987 HD 3.5”
1999 Flash Drives
THE 80’S WERE A GOOD DECADE FOR DIGITAL
1991 Zip Drive
1988 1st Commercial DAT
1990 CD-‐R
1992 Digital Cassette
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DIGITAL MEDIA
• HARD DISCS • FLOPPY DISCS • DIGITAL AUDIO TAPE (DAT) • DIGITAL COMPACT CASSETTE • MINIDISCS • COMPACT DISCS • ZIPDRIVES • FLASH DRIVES
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FLOPPY DISKS • 8-‐inch Floppy (1967 and bare until 1971): 80 kb • Single-‐sided GCR (Apple Mac): 400 KB (1984) • Single-‐sided MFM (IBM PC): 360 KB (1985) • Double-‐sided GCR (Apple Mac): 800 KB (1986) • Double-‐sided MFM (IBM PC): 720 KB (1986) • HD: 1.44 MB (1987) • ED: 2.88 MB (1991) Zip drive
Source: http://www./ileformat.info/media/3.5-‐/loppy/
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HOW MANY BYTES? ITEM HOW MANY BYTES • A binary decision 1 bit • A single text character 1 byte • A typical text word 10 bytes • A typewritten page 2 kilobytes ( KB ) • A low-‐resolution photograph 100 KB • A short novel 1 megabyte ( MB ) • The contents of a 3.5 inch Qloppy disk 1.44 MB • A high-‐resolution photograph 2 MB • The complete works of Shakespeare 5 MB • A minute of high-‐Qidelity sound 10 MB • One meter of shelved books 100 MB • The contents of a CD-‐ROM 500 MB • One full CD of music 700 MB • A pickup truck Qilled with books 1 gigabyte (GB ) • The contents of a DVD 17 GB • All the works of Beethoven 20 GB • A library Qloor of academic journals 100 GB
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HOW MANY BYTES ITEM HOW MANY BYTES • 50,000 trees made into paper and printed 1 terabyte ( TB ) • An academic research library 2 TB • The print collections of the U.S. Library of Congress 10 TB • The National Climactic Data Center database 400 terabytes • Three years' of EOS data (2001) 1 petabyte ( PB ) • All U.S. academic research libraries 2 PB • All hard disk capacity developed in 1995 20 PB • All printed material in the world 200 PB • Total volume of information generated in 1999 2 exabyte s ( EB s) • All words ever spoken by human beings 5 EB
Source: http://searchstorage.techtarget.com/de/inition/How-‐many-‐bytes-‐for
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SPECIFICATIONS • DIGITAL AUDIO TAPE (DAT) • Sony • 32, 44.1 or 48 kHz (16 bit) • 120 minutes Capacity (perfect
for album archives) • Uncompressed • Rewritable • Primary use became audio-‐
mastering, archival and data back up (up to 80 gig of data)
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SPECIFICATIONS • DIGITAL COMPACT CASSETTE • Philips and Matsushita • 32, 44.1 or 48 kHz (16 bit) • 105 minutes • Helical Scan (similar to VHS) • Digital or Analog • MPEG-‐1 Compression (4:1) • Backwardly compatible • SCMS Copy protection • Rewritable • Not viable as data-‐backup or PC
recording system
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SPECIFICATIONS • MINIDISC • SONY • 32, 44.1 or 48 kHz (16 bit) • 74 to 80 minutes • 1 GB of data • Digital Only • Consumer version of DAT • ATRAC Compression (5:1) • Many digital encoding formats available
(supported PCM) • SCMS Copy protection • Rewritable • Not widely used as data-‐backup or PC
recording system • Competed with CD-‐r’s and then MP3 players
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SPECIFICATIONS
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SPECIFICATIONS • COMPACT DISC • Phillips & Sony • At its introduction in 1982, contained more memory
than a typical PC’s internal HD • 80 minutes (uncompressed) • 700 MB data • No copy-‐protection (Red book warning): Analog Hole • Various formats
• CD • CD-‐Rom • CD-‐R (up to 52x) • CD-‐RW (4x-‐12x) • Photo-‐CD • Enhanced-‐CD • CD-‐I
• Size and capacity supposedly determined by Sony EVP, Norio Ohga, to have Beethoven’s 9th Qit on single CD for his wife
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MOST VERSATILE?