Chapter 4 Lesson 3
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Reading Focus- What changes in sound recording have taken place since 1877? ... or recording sound. People could record sound from home using easy ...

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Chapter 4 Lesson 3

Recorded Sound

Reading Focus- What changes in sound recording have taken place since 1877?

Phonograph- Invented by Edison. A devise that can

record and reproduce sound.

The phonograph was first devise used to record sound,

but it had drawbacks.

Sound was poor quality; cylinders wore out after being

played only a few times; Only one cylinder could be recorded

at a time.


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Invention of the Record

Berliner invented the disc record.

Used master copy plate that contained all the patterns of

the recording.

Singer sings once and makes many records from it.

Plastic records improved Berliners shellac resin records.

Didn’t break as easily; several songs could be put in each

Record.

Stereophonic records make more improvements. Sound far

better because it comes out of two speakers.


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Sound on Tape

Audiocassette- small container that holds magnetic tape

used for playing or recording sound.

People could record sound from home using easy methods.

Tapes could be played anywhere: moving cars, walkman;

convenient and portable.

Compact Disc- small disc on which sounds are digitally

recorded and played back by laser.

Improvements: Portable like tapes, but can skip to certain

songs quickly like records; great sound quality; durable.


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