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

[rje 230]

Audio Demo - Invention 13 (used in Commodore promotions)

View File

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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.

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• Submitter
  rje
• Submitted
  01/13/21
• Category
  Demos

 

[rje 230]

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.

 

[rje 230]

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

[rje 230]

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.

Edited January 14 by rje

[rje 230]

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.

 

Edited January 14 by rje

[Perifractic 715]

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

[rje 230]

8 hours ago, Perifractic said:

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

"Under promise, over deliver"

[rje 230]

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.

 

Edited January 15 by rje