2. What is Audio Media?
•Audio formats.
•May refer to analog
tape cassettes and
digital CDs as well as
to computer files
containing audio in
any number of digital
formats.
3. About audio media
• Audio Media was founded
in 1994 as a digital
recording studio by T.
Selvakumar, a well-known
musician and personality
in the Indian Film
industry. It then
branched on to sales.
Further on in 2002, as an
education institute
providing Apple Certified
courses.
4. Let’s go to audio first…
• The range of frequencies within
human hearing, which is
approximately 20Hz at the low
end to a high of 20,000Hz.
However, pundits(experts) claim
that some people can hear
higher frequencies.
5. Two types of audio:
• Analog
Traditional audio devices are analog, because
they handle sound waves in an analogous form.
For example, radios maintain the audio signal as
rippling waves from antenna to speaker. Tape
cassette players record sound waves as magnetic
waves. In the days of the phonograph
record, sound waves were literally "carved" into
the plastic platters.
• Digital
In the computer, audio is processed by converting
the analog signal into a digital code using PCM
(phase change memory)
6. There are two kinds of audio media…
1.Radio Broadcast which can be
live or taped.
2. Recordings.
7. Overall characteristics of audio media
• Ideal for extending voice and music
• Costs are relatively inexpensive
(compared to video)
• Good for the less literate (or aural
learners/auditory learners)
• Good for stimulating listener's
imagination
• Good for evoking emotional
responses
8. Examples: Telephone ; Voicemail
• Low cost (can be expensive
based on distance)
• Easy to use ☺
• Has feedback feature
• Length may be limited
• May involve toll charges
9. Audiotape ; Digital audio ; Compact disks
• Inexpensive (costs are not related to
distance)
• Easily accessible ☺
• Easily duplicated
• Require specific device
• Hard to modify the recordings
once produced and
distributed
10. Audio Conference (Teleconferencing)
• Easy to set up ☺
• Has feedback feature
• Remove distance constraint
• Requires specific device
• Challenging to schedule a
time when everyone can
participate
