Continuous Variable Slope Delta Modulator - HC55564
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Uploaded by jeriellsworth on Oct 17, 2011
Jeri shows how to build a CVSD audio compression codec in an FPGA.
- 201 likes, 2 dislikes
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Uploader Comments (jeriellsworth)
Top Comments
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I expect every High Speed pinball machine that's repaired like this to have a little sticker that changes the sign at 5:02 into "Drive 555 and stay alive". :-)
4 months ago 4
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where have you been, we missed you!
4 months ago 4
All Comments (67)
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Great repair job ! (Marry me ! )
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That is awesome
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i've noticed that intelligent people often have very low penmanship skills. you are no exception
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I spent hours and hours playing High Speed. It's my favourite Pinball machine!
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there is quite amazing sound coming out of that, i wonder what would the original (functional) chip have sounded like compared to the FPGA?
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THATS RIDICULOUS! I've gotta be honest these videos just keep inspiring me to do more tinkering and create more stuff. thank you and keep them coming.
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That is an awesome game, play it if you get a chance! XD
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I guess it could be with a simple microcontroler, RC filter and an op-amp
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Reminds me of Back To The Future 3 where Doc rebuilds a fried microchip using 1955 analog components.
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She lost me at hello ;-)
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Jeri, great work!
Mostly joking: Don't suppose you know how a Toshiba T6721A works (As in Commodore Magic Voice)?
mgoodhew 4 months ago
@mgoodhew I haven't looked at it before. I've always dreamed of reverse engineering one of the speech chips.
jeriellsworth 4 months ago
Wow, that was a lot of work to replace a chip! Couldn't you have just put out the word that you were looking for one and wait to see if one of us drooling cretins would offer it up as a present to our electronic goddess?
CampKohler 4 months ago
@CampKohler It was more about doing it. I probably have a junk pinball board with one on it here.
jeriellsworth 4 months ago
I wonder if I could use this idea in a music synthesis application...
dmlandrum 4 months ago
@dmlandrum That sounds like fun!
jeriellsworth 4 months ago