Sound . By John Sullivan For Multimedia I. Sound Contents. Sound Digital Sound Multimedia The Web Audio Software Creating Music CDs. Sound. How you use the power of sound can make the difference between an ordinary multimedia presentation and a professionally spectacular one.
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By John Sullivan
How you use the power of sound can make the difference between an ordinary multimedia presentation and a professionally spectacular one.
Sound is perhaps the most sensuous element in multimedia.
Renowned Japanese film director, Akira Kurosawa, famous for his work in a visual medium, nonetheless has this to say about he medium “The most exciting moment is the moment when I add sound ….[Then] I tremble” (Alten, 1994, p.4.).
A multimedia developer should be aware of sound at all times in order to successfully accomplish the information-conveying and aesthetic goals of a multimedia production (Tannenbaum, 1999).
For convenience, sound may be classified in three categories:
Example: Laurie Smith Project 1
Sounds vary in sound pressure level (amplitude) and in frequency or pitch. Amplitude refers to loudness of sound.
Acoustics is the branch of physics that studies sound.
When something vibrates in the air by moving back and forth
(cone of a loudspeaker), it creates waves of pressure.
These waves spread like the
ripples from a pebble tossed into
a still pool and when they reach
your eardrums, you experience the
changes of pressure, or
vibrations, as sound.
The ripples propagate at about 750 mph, or Mach 1
Range of frequencies from the low end of the spectrum (20hz to 40hz) to a high end of (20 Kilohertz)
Higher sampling rate
Low sampling rate
For Mono at the same sampling rate divide by 2
Audio Interchange File Format - AIFF, AIF
Musical Instrument Digital Interface (MID, MDI, MFF)
is an internationally accepted file format to store MIDI data
Resource Interchange File Format (RIFF)
developed by Microsoft and contains digital and MIDI
MP3 – MPEG
RA – Real Audio
Sound (SND) - apple
Roll (ROL) -developed by AdLib, Inc. for their sound cards
Midi-like data and Yamaha FM synthesizer info
Wave (Wav) - windows by Microsoft as subset of RIFF
Sun Audio (AU) - Sun Microsystems
Voice (V0C) Sound Blaster
Stravinsky’s Rite of Spring
Internet Explorer bgsound
The <bgsound> Tag
<bgsound src="Audio/w13mx11x8e.wav" loop=infinite>
<bgsound src="caribian.mid" loop=2>
<embed src=music.wav hidden autostart true loop=true>
Might present audio control panel
Music Galore: http://www.geocities.com/Nashville/Opry/1809/
THX – sound Lucas Films
PropellerHeads, Take California DecksandDrumandRockandRoll, Dreamworks Records, 1998
Microsoft Encarta, 1995
Jean Michel Jarre, First Rendez-vous, Renez-vous, Dreyfus, 1986
Laurie Smith, Project 1, 1999
Michelle Bzenk Project 3, 2000