Audio and Video Pioneer Ray Dolby Passed Away
 
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Advent 100A

1965: Dolby introduces A-type® noise reduction for the professional market.
1968: Dolby introduces Dolby B-type® noise reduction for consumer products.
The Advent 100A shown here, is one of the first products to use Dolby B-type noise reduction.




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Audio and Video Pioneer Ray Dolby Passed Away