tony sayer wrote:

http://www.cambridge-news.co.uk/Pemb...se-35-million-
donation-new/story-28298902-detail/story.html
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** A story that was published many times was that Ray Dolby was inspired to invent his noise reduction system while staying in one of the rooms at Pembroke.

Near his room was a chapel which held regular performances of coral music and the like. So Ray installed a mic in the chapel and ran a line back to his room. The sound quality was superb, but when recorded to 1/4 inch tape the playback was spoiled by noise.

This got him thinking ...

His thinking led to Dolby A, which enabled 1mm wide tracks on 2 inch tape to have an acceptable s/n ratio. Then Dolby B & C which improved the s/n of stereo cassettes using 0.6mm track width.

This man saved a lot of tape.


..... Phil