Presentation on theme: "A Brief Timeline of Music Formats"— Presentation transcript:
1A Brief Timeline of Music Formats Audio Formats / Audio Storage Michael S. McDaniel
2Analog vs. DigitalAnalog is a continuous wave signal that varies in frequency and/or amplitude.Sound is naturally in this form.
3Analog vs. DigitalDigital is a signal that is composed of pulses of zeroes and ones.
4Vinyl Record (LP) 8-Track Cassette Which is Which?AnalogDigitalReel-to-ReelVinyl Record (LP) 8-Track CassetteCDMP3 WMAFLACDVD Audio
5( ?) Reel-to-ReelWorks like a cassette (magnetic tape is transferred from one reel to the other)Developed by Mullin, an audio engineer who was in WW2Used extensively in music recordingNot portable
6(1948 – ?) Vinyl RecordThe primary technology used for personal music reproduction for most of the 20th centuryA flat disk with a groove, played on a turntable by a needleCame in different sizes (speeds) – 45’s, 78’s, 33 1/3Not portableStill being produced today
7(1963 – ?) Cassette A contained reel-to-reel format Magnetic tape that goes across a head that reads the signalPopular due to its size and portabilityStill being produced today
8(1964–1980) 8-Track Tape “Endless” reel-to-reel cassette Magnetic tape that goes across a head that reads the signalPopular from the mid-60’s to the early 80’s
9(1982 - ?) Compact Disc Digital format! It is “optical media” : A laser burns dots into a plastic disk.Those dots are either open or closed (1’s or 0’s)Most popular format used today.Very portable and inexpensive.
11MP3 Players Mp3 Players like the iPod have taken over. They are much more easily accessibleAvailable online through providers like iTunes from AppleTHE PROBLEMThe RIAA (Recording Industry Association of America) has been making public the problem of copyright infringement prevalent among mp3 users.