Re:Roland TR-808 Cowbell Rebuild
by smoyer on Saturday May 07, 2022 @11:29AM
(#31295313)
In the original circuit,the same RC network is used for both the attack and decay so that circuit will indeed produce a 1:1 mark:space ratio.
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Curious about the term "1:1 mark:space ratio" since it was also in the article. I would have used the term "50% duty cycle".
I purposely repeated the OP's wording but since we're talking about an astable multivibrator,frequency and duty cycle (in percent) makes sense. I did a lot of circuit design for communications systems and I associate the words mark and space with ones and zeroes in a frame/word.
I wondered if it was an English (not American) phrasing.
More on the origins of the terminology here: https://en.wikipedia.org/wiki/Mark_and_space