Sound RecordingSound Recording

We need to backtrack a We need to backtrack a bit to understand sound bit to understand sound

recordingrecording

Leon Scott de Martinville - Leon Scott de Martinville - phonautograph - 1857phonautograph - 1857

Attached a bristle to a Attached a bristle to a membrane at the end of membrane at the end of a cone, set the bristle to a cone, set the bristle to touch a piece of smoked touch a piece of smoked glassglass

Spoke into the coneSpoke into the cone membrane vibrated to membrane vibrated to

the sound and the the sound and the bristle etched a wavy bristle etched a wavy line onto the smoked line onto the smoked glassglass

Spring of 2009 scientists Spring of 2009 scientists were able to get sound were able to get sound

from one of de from one of de Martinville’s paper Martinville’s paper phonautographs – a phonautographs – a

woman singing for 10 woman singing for 10 secondsseconds

Thomas EdisonThomas Edison

Tinfoil phonograph – Tinfoil phonograph – 18771877

Close-up on bumpsClose-up on bumps

Chichester Bell / Charles Chichester Bell / Charles TainterTainter

Bell and Tainter’s Bell and Tainter’s phonograph – 1885phonograph – 1885

Close-upClose-up

Emile BerlinerEmile Berliner

Berliner Gramophone – Berliner Gramophone – 18871887

Eldridge Johnson / Eldridge Johnson / GramophoneGramophone

““Little Nipper”Little Nipper”

Columbia’s EagleColumbia’s Eagle

Mechanical recording Mechanical recording sessionsession

Electrical Electrical RecordingRecording

Valdemar PoulsenValdemar Poulsen

Telegraphone – 1897Telegraphone – 1897

Close up of telegraphoneClose up of telegraphone

Telegraphone – 1915Telegraphone – 1915

Fritz PfleumerFritz Pfleumer

Magnetic tapeMagnetic tape

BASF/AEG Magnetophone – BASF/AEG Magnetophone – 19351935

Carbon granule micCarbon granule mic

Condenser MicrophoneCondenser Microphone

Ribbon mikeRibbon mike

Electrical recording Electrical recording sessionsession

Cone speakerCone speaker

Siemans’ dynamic Siemans’ dynamic speakerspeaker

Radiation speakerRadiation speaker

Orthophonic speakerOrthophonic speaker

Speaker constructionSpeaker construction

Back to tapeBack to tape

Reel to reel tape Reel to reel tape recorder – 1948recorder – 1948

Cassette tape – 1963Cassette tape – 1963

Norelco CarryCorder – Norelco CarryCorder – 19651965

8 track tape – 19668 track tape – 1966

Sony Walkman – 1979Sony Walkman – 1979

Digital Digital RevolutionRevolution

Close up of record Close up of record groovesgrooves

CD pitsCD pits