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P. Short
Joined: 12 Jun 2006
Posts: 594
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 Posted: Wed Feb 21, 2007 8:23 pm Post subject: |
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Right now I'm thinking of this as the easy way to experiment with the effects of a more intelligent driver, the things that I was bringing up in the discussion with Lou.
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Phil |
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xmus
Joined: 17 Jan 2007
Posts: 313
Location: Boise, ID
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| Posted: Wed Feb 21, 2007 8:33 pm Post subject: |
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| P. Short wrote: | Right now I'm thinking of this as the easy way to experiment with the effects of a more intelligent driver, the things that I was bringing up in the discussion with Lou.
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Phil |
Where is that discussion? I'm not familiar with it. |
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P. Short
Joined: 12 Jun 2006
Posts: 594
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| Posted: Wed Feb 21, 2007 8:46 pm Post subject: |
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In the 8-Channel Demo/Starter Board topic in the 'PCB Topics' category.
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Phil |
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P. Short
Joined: 12 Jun 2006
Posts: 594
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| Posted: Fri Feb 23, 2007 1:37 am Post subject: |
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The data in the sample file looks more like Base64 encoding than UUENcoding - the Mime or PEM section here http://en.wikipedia.org/wiki/Base64.
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Phil |
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P. Short
Joined: 12 Jun 2006
Posts: 594
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| Posted: Fri Feb 23, 2007 5:00 pm Post subject: |
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| xmus wrote: |
Somewhere else, somebody tried it on a real song, and said it took 20 minutes to chomp the data. Which doesn't surprise me. You wouldn't want to run this during the show, rather, you would pre-process the data with part of this script, and then re-run a subset of the script to kick off music and bit bang the serial port.
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That doesn't sound right, there must have been sometihng else wrong on his machine. I've run your script a few times on this machine (650 MHz Pentium-3 laptop), and the 20s/25ms/16ch example seemed to run adequately fast. Unless there is something that doesn't scale linearly, a reasonable song (5 min, 25 ms, 128 ch) shouldn't be that slow. Maybe his machine was running out of memory, or something like that.
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Phil |
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