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New demo uploaded: Audio Demo - Invention 13 (used in Commodore promotions)

Posted: Wed Jan 13, 2021 8:09 pm
by rje



Audio Demo - Invention 13 (used in Commodore promotions)




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I was missing Bach's "Invention 13", and so here's the first 13 bars that Commodore Business Machines used in the early 80s for Commodore product promotions.






  • Submitter




    rje




  • Submitted


    01/13/21




  • Category







 

New demo uploaded: Audio Demo - Invention 13 (used in Commodore promotions)

Posted: Wed Jan 13, 2021 8:18 pm
by rje

As mentioned above, I think there are a couple of improvements to make:

(1) The waveforms.  I think the bass waveform is too quiet.  I can adjust volumes, or change waveform.

(2) I think there's an error in the bass waveform.  I'd have to listen to it nice and slow and carefully to be sure.

(3) I want to convert the X16 graphic butterfly to a sprite (I know how) and use it in a graphic display to go along with the song.

 


New demo uploaded: Audio Demo - Invention 13 (used in Commodore promotions)

Posted: Wed Jan 13, 2021 8:51 pm
by rje

Found one bug -- an F instead of F#.  Might be another one in there somewhere!!


New demo uploaded: Audio Demo - Invention 13 (used in Commodore promotions)

Posted: Thu Jan 14, 2021 12:25 am
by rje

OK, I converted a 64 x 64 verison of the X16 logo, and encoded it into runlength DATA in BASIC.  Gnarly!

Anyway it does things.  Not beautiful, but it's a start.

 

 

FYI:

To store it in DATA statements without runlength encoding takes around 20K.  

To store that as runlength DATA takes under 7K.


New demo uploaded: Audio Demo - Invention 13 (used in Commodore promotions)

Posted: Thu Jan 14, 2021 8:07 pm
by rje

OK, I reformatted this to look like the C64 promotional at the end of the 1983 Christmas Demo.  I figured I could push some of the X16's features while playing that little ditty from Bach.

And I backed off a bit on the sprites, so they're more subtle, but still there of course.

 


Screen Shot 2021-01-14 at 1.43.18 PM.png

New demo uploaded: Audio Demo - Invention 13 (used in Commodore promotions)

Posted: Fri Jan 15, 2021 5:58 am
by Perifractic
Very nice! But you got the date a year late. Probably [emoji39]

New demo uploaded: Audio Demo - Invention 13 (used in Commodore promotions)

Posted: Fri Jan 15, 2021 2:57 pm
by rje


8 hours ago, Perifractic said:




Very nice! But you got the date a year late. Probably emoji39.png



"Under promise, over deliver"


New demo uploaded: Audio Demo - Invention 13 (used in Commodore promotions)

Posted: Fri Jan 15, 2021 9:15 pm
by rje

I'll give it a 50-50 chance for 2021.  A lot can happen between Proto 2 and Release Candidate X: things can go super smooth (in which case I'm thinking July) or things can be rough (2022).

This prediction brought to you out of near complete ignorance.