AUDIO MEDIA

I t i s t h e r e c o r d i n g , t r a n s m i s s i o n , r e c e p t i o n , a n d r e p r o d u c t i o n o f s o u n d u s e d f o r

c o m m u n i c a t i o n , i n f o r m a t i o n d i s s e m i n a t i o n , a n d e n t e r t a i n m e n t .

Audio Media

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.

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.

Hearing is to perceive or apprehend by ear or to have the capacity of apprehending sound

Hear ing vs . L i s ten ing

Listening is to pay attention to sound or to hear something with thoughtful attention

Audio Tapes

Advantages of using Cassette Tapes:1. Durable2. Economical3. Easy to use4. Require little storage space

Audio Tapes

Disadvantages:1.Prone to noise2.Tape sometimes sticks or tangles3.Poor frequency response and over-all

quality vs. CD’s

Compact Disc

Advantages of using Compact Discs:1. Random search2. Very durable3. No background noise4. High fidelity

Compact Disc

Disadvantages:1.Initial expense of equipment2.Impractical to prepare locally3.Sensitive to movement

MPEG/WAVEMP3 (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.

MPEG/WAVE

Advantages of using Wave File:1. High quality of audio files2. Use of multiple channels for the

sound

Application Audio may be used by the teacher to bring into the classroom sounds which are of significant to the learning processEnhances learning of verbal informationIdeal for teacher foreign language. Audio resources allow students to hear words pronounced by native speakers

Application Useful for those who have reading difficulties, or are nonreadersIt can be used as mood music for some subjects like artsAudio is frequently used in rhythmic activities like dancingRelated songs can be used as a motivation for a class discussion

Application Animal voice audio can be used in teaching different animal sounds to kindergarten studentsAudio book may be used to assess students’ learning comprehensionCatchy tunes can help students memorize Math formulas

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