Download digital_music

Digital Music, MP3 Players, iTunes
& All the Stuff That’s Fun to Know
Barbara Chamberlin, Ph.D.
Sponsored by the CAHE Technology Help Desk • 646-3305
What is digital music?
Music on the computer
Digital audio goes way back…
1989
Macintosh
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?
Digital audio required space
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1 song = 27.2 MB
Storage math…
Kilobytes (KB)
• 1000 = 1 MB
• Used to measure text,
email, small files
Storage math…
Megabytes (MB)
• 1000 KB
• 1000 MB = 1 Gigabyte
• Used to measure
Office documents
• Floppy disk =1.44 MB
Storage math…
Gigabytes (GB)
• 1 GB=1000 MB
• 1 GB=694 floppies
• Used to measure
BIG files, like video
• How we measure
hard drives now
Storage math…
• 1000 KB = 1 MB (email in KB)
• 1000 MB = 1 GB (docs in MB)
• 1000 GB = more space than your really need
right now
=
1 song = 27.2 MB
Digital audio required space
• Storage space (hard drives) were:
– Expensive
– Big and clunky
– Slow
Old: 1989
20 MB Hard drive
$899
Old: 1995
1 GB Hard Drive
$849
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1 song = 27.2 MB
=
1 GB Hard Drive
($899 in 1995)
Would hold
35 songs
So, NOW why all of the…
QuickTime™ and a
TIFF (Uncompressed) decompressor
are needed to see this picture.
Why the fuss now?
• Storage drives got cheap
• Storage drives got small
• Audio compression got good
1 song = 27.2 MB
1 song = 2.4 MB or less
Digital music is feasible!
QuickTime™ and a
TIFF (Unc ompressed) decompres sor
are needed to see this picture.
What is an MP3?
• Compressed audio file
What is an MP3 player? (iPod,
Rio)
• Hard drive that plays
compressed audio files
About MP3 players…
• Little hard drives
• Come in different sizes, can
hold different numbers of songs
• Come with different capabilities
QuickTime™ and a
TIFF (Unc ompressed) decompres sor
are needed to see this picture.
– Listen to audio
– Record audio
– Store data
Getting music on the MP3
player
• Demonstration: iTunes
– Organize music into playlists
– Rip music CDs
– Write music CDs
– Purchase music
Uses: Play Music
• All players will:
– Play audio
– Hook up to computer
to download
• Most players will:
– Display information
• Some players will:
– Record audio
– Act as hard drive
QuickTime™ and a
TIFF (Uncompressed) decompressor
are needed to see this picture.
Uses: Data
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Calendar
Contacts
Notes
Hard drive backup
Presentations
Photos
QuickTime™ and a
TIFF (U ncompressed) decompressor
are needed to see t his picture.
Uses: Text
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Recipes
Books
News RSS Feeds
Dictionary
Uses: Language
• iLingo: text based language dictionary with
audio pronunciation
• Record and practice your own language
dialogue
QuickTime™ and a
TIFF (Uncompressed) decompressor
are needed to see this picture.
QuickTime™ and a
TIFF (Uncompressed) decompressor
are needed to see this picture.
QuickTime™ and a
TIFF (Uncompressed) decompressor
are needed to see this picture.
Uses: Audio
• It is really easy to capture and use audio.
QuickTime™ and a
TIFF (Uncompressed) decompressor
are needed to see this picture.
Uses: Audio
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Record class notes
Conduct interviews
PodCasting
Car “stereo”
QuickTime™ and a
TIFF (Uncompressed) decompressor
are needed to see this picture.
What can you do with digital audio?
• Post to web site
• Put into video
applications
• Place into
PowerPoint
• Share on other MP3
players
• Burn to CD
Uses: Other
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MapQuest driving directions
Probe tools
Flashlight
“Reads” text files to you
RSS feeds
Karaoke
In conclusion…
• Door prizes/evaluation
• Next Popcorn Technology Series
– Friday May 20
– 3:30 pm
– Web Sites that will Wow You
• Talk with the Experts