1. Sound Situation Formats and Foundations

2. Cassette Tapes Introduced by the Music Industry

3. Cassette Tapes Introduced by the Music Industry Thin plastic ‘tape’ wound on to a spindle

4. Cassette Tapes Introduced by the Music Industry Thin plastic ‘tape’ wound on to a spindle Tape is layered with Ferric Oxide.

5. Cassette Tapes Exposed to a magnetic field

6. Cassette Tapes Exposed to a magnetic field 2 Key features of cassettes:

7. Cassette Tapes Exposed to a magnetic field 2 Key features of cassettes: 1) can record material to the tape

8. Cassette Tapes Exposed to a magnetic field 2 Key features of cassettes: 1) can record material to the tape 2) can easily erase the tape and re-record.

9. Compact Disc Plastic Disk 4 1/100’s of an inch thick Label Acrylic Aluminum Plastic Base Material

10. Compact Disc Plastic Disk 4 1/100’s of an inch thick Coated with Aluminum Label Acrylic Aluminum Plastic Base Material

11. Compact Disc Plastic Disk 4 1/100’s of an inch thick Coated with Aluminum Continuous spiral of bumps underneath Label Acrylic Aluminum Plastic Base Material

12. Compact Disc Plastic Disk 4 1/100’s of an inch thick Coated with Aluminum Continuous spiral of bumps underneath Single track of continuous data. Label Acrylic Aluminum Plastic Base Material

13. Compact Disc Information is written and read in a spiral

14. Compact Disc Information is written and read in a spiral Allows for CD’s of all sizes to be created.

15. CD Player Components

16. Drive Motor – spins the disc 200-500 x/sec

17. CD Player Components Drive Motor – spins the disc 200-500 x/sec Laser Lens – focuses on bumps and reads

18. CD Player Components Drive Motor – spins the disc 200-500 x/sec Laser Lens – focuses on bumps and reads Tracking Mechanism – moves the laser

19. CD Player Components Drive Motor – spins the disc 200-500 x/sec Laser Lens – focuses on bumps and reads Tracking Mechanism – moves the laser Must be able to track the bumpy spiral.

20. Digital Storage WAV – Waveform audio (uncompressed)

21. Digital Storage WAV – Waveform audio (uncompressed) Similar in sound and size to CD Files

22. Digital Storage WAV – Waveform audio (uncompressed) Similar in sound and size to CD Files MPEG3 – Compressed audio format

23. Digital Storage WAV – Waveform audio (uncompressed) Similar in sound and size to CD Files MPEG3 – Compressed audio format Created by Motion Picture Experts Group

24. Digital Storage WAV – Waveform audio (uncompressed) Similar in sound and size to CD Files MPEG3 – Compressed audio format Created by Motion Picture Experts Group First format driven by consumers

25. Digital Storage WAV – Waveform audio (uncompressed) Similar in sound and size to CD Files MPEG3 – Compressed audio format Created by Motion Picture Experts Group First format driven by consumers CD song uses and average of 40 MB

26. Digital Storage WAV – Waveform audio (uncompressed) Similar in sound and size to CD Files MPEG3 – Compressed audio format Created by Motion Picture Experts Group First format driven by consumers CD song uses and average of 40 MB MP3 version of song would use 4 MB

27. Digital Storage WAV – Waveform audio (uncompressed) Similar in sound and size to CD Files MPEG3 – Compressed audio format Created by Motion Picture Experts Group First format driven by consumers CD song uses and average of 40 MB MP3 version of song would use 4 MB Some CD’s have ability to read MP3.

28. Understanding MP3 Re-saved = re-compressed

29. Understanding MP3 Re-saved = re-compressed Loses quality

30. Understanding MP3 Re-saved = re-compressed Loses quality Carries information in META Tags (ID3)

31. Understanding MP3 Re-saved = re-compressed Loses quality Carries information in META Tags (ID3) Imbeds info on artist, title, album art

32. Understanding MP3 Re-saved = re-compressed Loses quality Carries information in META Tags (ID3) Imbeds info on artist, title, album art Info can be displayed on screens

33. Understanding MP3 Re-saved = re-compressed Loses quality Carries information in META Tags (ID3) Imbeds info on artist, title, album art Info can be displayed on screens Can search to restore lost info.

34. MP3 Players 1998 – first MP3 player introduced

35. MP3 Players 1998 – first MP3 player introduced Could store and play MP3

36. MP3 Players 1998 – first MP3 player introduced Could store and play MP3 No moving parts - Solid State Memory

37. MP3 Players 1998 – first MP3 player introduced Could store and play MP3 No moving parts - Solid State Memory Microprocessor inside.

38. MP3 Players Various Forms today

39. MP3 Players Various Forms today Flash Memory

40. MP3 Players Various Forms today Flash Memory Smaller storage, no moving parts

41. MP3 Players Various Forms today Flash Memory Smaller storage, no moving parts Better for jogging and active people

42. MP3 Players Various Forms today Flash Memory Smaller storage, no moving parts Better for jogging and active people Hard Drive Players (iPod)

43. MP3 Players Various Forms today Flash Memory Smaller storage, no moving parts Better for jogging and active people Hard Drive Players (iPod) Moving Parts

44. MP3 Players Various Forms today Flash Memory Smaller storage, no moving parts Better for jogging and active people Hard Drive Players (iPod) Moving Parts More fragile

45. MP3 Players Various Forms today Flash Memory Smaller storage, no moving parts Better for jogging and active people Hard Drive Players (iPod) Moving Parts More fragile Larger storage capacity