1. Sound Recording

2. We need to backtrack a bit to understand sound recording

3. Leon Scott de Martinville - phonautograph - 1857 Attached a bristle to a membrane at the end of a cone, set the bristle to touch a piece of smoked glass Spoke into the cone membrane vibrated to the sound and the bristle etched a wavy line onto the smoked glass

4. Spring of 2009 scientists were able to get sound from one of de Martinville’s paper phonautographs – a woman singing for 10 seconds

5. Thomas Edison

7. Tinfoil phonograph – 1877

9. Close-up on bumps

10. Chichester Bell / Charles Tainter

11. Bell and Tainter’s phonograph – 1885

12. Close-up

13. Emile Berliner

14. Berliner Gramophone – 1887

15. Eldridge Johnson / Gramophone

16. “Little Nipper”

17. Columbia’s Eagle

18. Mechanical recording session

19. Electrical Recording

20. Valdemar Poulsen

21. Telegraphone – 1897

22. Close up of telegraphone

23. Telegraphone – 1915

24. Fritz Pfleumer

25. Magnetic tape

27. BASF/AEG Magnetophone – 1935

28. Carbon granule mic

29. Condenser Microphone

30. Ribbon mike

31. Electrical recording session

32. Cone speaker

33. Siemans’ dynamic speaker

34. Radiation speaker

36. Orthophonic speaker

37. Speaker construction

39. Back to tape

41. Reel to reel tape recorder – 1948

42. Cassette tape – 1963

43. Norelco CarryCorder – 1965

44. 8 track tape – 1966

45. Sony Walkman – 1979

46. Digital Revolution

47. Close up of record grooves

49. CD pits