90002_42250_05

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90002_42250_05

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2000s

Color

Richard Hart segment about home and car sound systems.

1970s

African American man (actor Jimmy Walker) is right in front of the…

1960s

Historian Conrad Beneshan explains Thomas Edison's experiments with…

1950s

how sound waves are received by ear.

1980s

Clip shows an engineer listening to and mastering the audio for a low-…