Educational Technology 2

1. AUDIO MEDIA

2. It is the recording, transmission,
reception, and reproduction of
sound used for communication,
information dissemination, and
entertainment.
Audio Media

3.  Audio media started
with the Acoustic Era,
when Leon Scott
invented the
Phonautograph as a
scientific device to
study sound waves in
1857
History
 Alexander Graham Bell
experimented with the
phonotaugraph and
created his own version
by adding a human ear to
make a recording in
1874.

4.  In Electric Era,
Columbia began
experiments with a
new technology
developed by the
Western Electric
Company
 The Digital Era was
marked by the introduction
of the compact disc and
the compact disc player.
 In 1996, a U.S. patent
was issued for the MP3, a
compressed, low bit-rate
audio format that has
become the most
commonly used audio
medium.

5.  Hearing is to
perceive or
apprehend by ear or
to have the capacity
of apprehending
sound
Hearing vs. Listening
 Listening is to
pay attention to
sound or to hear
something with
thoughtful
attention

6. Audio Tapes
Advantages of using Cassette Tapes:
1.Durable
2.Economical
3.Easy to use
4.Require little storage space

7. Audio Tapes
Disadvantages:
1.Prone to noise
2.Tape sometimes sticks or tangles
3.Poor frequency response and
over-all quality vs. CD’s

8. Compact Disc
Advantages of using Compact Discs:
1.Random search
2.Very durable
3.No background noise
4.High fidelity

9. Compact Disc
Disadvantages:
1.Initial expense of equipment
2.Impractical to prepare locally
3.Sensitive to movement

10. MPEG/WAVE
MP3 (MPEG Audio Layer 3)
Audio compression file format that makes large
audio files available by shrinking them into
smaller files. It is an “open” standards, which
means it is available to anyone who has access to
the internet. It relies on sampling frequencies,
multiple channels and compression algorithms.

11. MPEG/WAVE
Advantages of using Wave File:
1.High quality of audio files
2.Use of multiple channels for the
sound

12. Application
 Audio may be used by the teacher to bring into the
classroom sounds which are of significant to the
learning process
 Enhances learning of verbal information
 Ideal for teacher foreign language. Audio resources
allow students to hear words pronounced by native
speakers

13. Application
 Useful for those who have reading difficulties, or
are nonreaders
 It can be used as mood music for some subjects
like arts
 Audio is frequently used in rhythmic activities like
dancing
 Related songs can be used as a motivation for a
class discussion

14. Application
 Animal voice audio can be used in teaching
different animal sounds to kindergarten
students
 Audio book may be used to assess students’
learning comprehension
 Catchy tunes can help students memorize
Math formulas

15. Application
 Recorded audio of historical speeches
and lines of prominent people in the past
can be used to create an interesting
atmosphere in Social Studies class.
 Radio drama can be used as an activity to
assess students’ speech capacity