3. An audio media is a form of media
communication that uses audio or voice
recording as a medium in the delivery
of information.
These are teaching-learning devices
that appeal to the auditory sense.
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4. History and Development
The modern age has blessed us with the
ability to capture and play back sound.
From the phonograph to MP3, we're
forever improving audio technology in a
quest to make music more accessible.
Here is a brief history of audio formats
past, and a peek into how we might listen
to music in the 21st century.
6. Phonographs
In the early 19th century, it was all
but impossible to imagine what great
changes were in store for the world of
audio. Although the first successful
recording device was developed in
1855, it wasn't until Thomas Edison's
phonograph (invented in 1877) and
Emile Berliner's Gramophone (patented
in 1887) that the phonograph started
to come into its own.
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7. Radio
Radio was originally developed for
military use during World War I, but
the gramophone industry helped spur
demand for recorded music delivered
over the air. When the Radio
Corporation of America (RCA) acquired
the Victor Talking Machine Company in
1929, the modern era of the music
industry was born.
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8. 8 - Track
Invented in the early 1960s by William
Powell Lear, and heavily marketed and
used in the '70s, the 8-track was the
premier portable audio format for
almost 15 years. The 8-track was
designed around a single reel with the
two ends of the plastic recording tape
joined with a piece of conductive foil
tape to make one continuous loop.
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9. Cassette Tapes
The cassette as we know it didn't come into
the average home until the late 1970s.
However, magnetic tape recording got its
start in music studios around 1950. Musicians
could record in longer sessions, and seamless
splice editing allowed artists and producers
to select and combine the best cuts into
polished songs.
The debut of Sony's Walkman in 1979 was
the final nail in the 8-track's coffin;
cassette tape sales soared into the '80s.
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10. Compact Disc
A compact disc (or CD) is an optical
disc used for storing digital data. It
was originally invented for digital audio
and is also used as a data storage
device, a CD-ROM. CD-ROM reading
devices are frequently included as a
component in personal computers.
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11. Digital Audio Tapes
Introduced in 1987 for the studio market,
digital audio tapes quickly became de
rigueur in professional recording industry
circles. Although DATs never fully caught
on in the consumer market because of the
high cost of DAT players, they remain a
mainstay of the pro-audio world because
of their low price and enhanced digital
storage capabilities.
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12. Mini Disc
MiniDisc (MD) is a disc-based
data storage device for storing any kind of
data, usually audio. The technology was
announced by Sony in 1991 and introduced
January 12, 1992. MD Data, a version for
storing computer data was announced by
Sony in 1993, but it never gained
significant ground, so today MDs are used
primarily for audio storage. The audio
discs can be premastered or recordable
(blank).
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13. MP3
Invented in 1989 in Erlangen, Germany,
MP3 has quickly come to symbolize a
paradigm shift in the way many people
access their music. The home computer
revolution, along with the Internet, has
allowed millions of Net-connected
music fans to take advantage of the
latest audio medium.
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14. MP3
Short for Moving Picture Experts Group,
Audio Layer III, MP3 is a compression
format that shrinks digital audio files with
negligible sound-quality degradation. In 1997,
the format truly realized its potential,
thanks to a man named Tomislav Uzelac, who
created the AMP MP3 playback engine. The
first MP3 player was invented just in time
for the Napster revolution in the form of
1998's Winamp -- widely regarded as the
first free, consumer-ready MP3 player.
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15. AAC
AAC is a new audio compression technology, Advanced
Audio Coding. This new standard, developed by Dolby,
the Fraunhofer Institute, and others, may become the
major ingredient in 21st century digital music
distribution.
The AAC codec was formally introduced to the world at
the Consumer Electronics Show 2001, along with dozens
of new digital audio players able to play AAC files.
Currently, companies such as Liquid Audio distribute
audio using AAC. Promising smaller file sizes and better
sound quality than the aging MP3 format, AAC also
features built-in copyright protection.
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17. Radio Broadcast
Radio broadcasting is a one way
wireless transmission over radio waves
intended to reach a wide audience.
Stations can be linked in
radio networks to broadcast a common
radio format, either in
broadcast syndication or simulcast or
both.
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18. Radio Broadcast
Audio broadcasting also can be done
via cable radio,local wire
television networks, satellite radio,
and internet radio viastreaming media
on the Internet.
The signal types can be either
analog audio or digital audio.
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19. Audio Recordings
Sound recording and reproduction is
an electrical or mechanical inscription
and re-creation of sound waves, such
as spoken voice, singing,
instrumental music, or sound effects.
The two main classes of sound
recording technology are
analog recording and digital recording
.
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22. Audio Conferencing
Audio conferencing usually refers to
meetings held by people in different
places using devices that allow sounds to
be sent and received. These meetings may
only involve two parties, but in many cases,
there are numerous parties involved.
Audio conferencing allows multiple
parties to connect using devices such as
phones or computers.
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23. Improve listening skills
Easy to operate
Safe way of restoring information
Can be used for small or big groups
Best used to improve speech skills
Lessen distraction when used with
headphones
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24. Useful to add, maintain and stimulate interest
Can be used as a set induction strategy
Can clarify problems and ambiguity
Can aid memory
Can be use in stimulating emotions
Useful in distant learning
Helpful in stimulating creative thinking, increase
imagination
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25. Extended use may bore students
Costly compared to actual presentations
Power failure issues can disturb the
learning environment
Strong lesson planning is to be done
Trained teachers are needed who can
manage it effectively
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26. Preview the materials
Prepare an outline of important points
that will be presented
Motivate the students to listen
carefully to some important details
End with questions, discussions and
other forms of evaluation
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27. 1. Clarity of voice
2. Relevant to the topic
3. Clear pitch of the audio
4. Appropriate length
5. Appropriate language
6. Unbiased
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