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.
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.
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.
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)
There are two kinds of audio media… 1.Radio Broadcast which can be live or taped. 2. Recordings.
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 listeners imagination • Good for evoking emotional responses
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
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
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