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Forums > C64 Composing > problematic playback od GT multispeeds
2014-07-21 11:45
Jammer

Registered: Nov 2002
Posts: 1289
problematic playback od GT multispeeds

I'm not sure how problems and hickups are common for playback on real machine but considerable number of my works usually sounds broken, especially those ones composed with the latest GT release. What's the culprit here? Are GT compilations that cycle sensitive or what? :) During the release of Club Stylier and a few other multis I was forced to create false SID address working as a buffer and then copy values to proper registers but it's really unwanted workaround. Any clues?
 
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2014-07-24 21:23
cadaver

Registered: Feb 2002
Posts: 1153
By using low but non-zero attack you're basically asking for maximum trouble :) At low values the SID's internal ADSR counter is wrapping around in a fast loop (10-20 cycles if I remember right) and in that case, if the SID writes to trigger the note come late, the attack is messed up & delayed.
2014-07-24 21:29
Jammer

Registered: Nov 2002
Posts: 1289
Well, that is basis for my multispeed instruments ;)

I've just tried changing instruments in Dancing Girls to Attack 0 and no HR but it's one utter mess. Are you really sure about it? ;)
2014-07-24 21:47
FATFrost
Account closed

Registered: Sep 2003
Posts: 211
I had this problem too... In the editor the time sounds like jeff/jammer/Linus/Hubbard,, when I export... Sounds like shizz... Oh... That's my skills?! :/
2014-07-24 21:48
FATFrost
Account closed

Registered: Sep 2003
Posts: 211
Forgot I'm just a scabby old pixel tramp.. :)
2014-07-25 09:21
Linus

Registered: Jun 2004
Posts: 638
Quote: Well, I prefer setting Attack to 1 or 2. The same effect in GT, no messing with HR ;)

That is _far_ from the same effect, dude! :)

Anyway, regarding low non-zero attack values in multispeed tunes, I can only agree with Cadaver - the attack gets unpredictable.

You could try changing the attack settings in your "Dancing Girls" track to '0' and add an '$E9' at the beginning of your wavetable instead. That was the basis for my multispeed instruments a couple of years ago.
2014-07-25 10:42
Jammer

Registered: Nov 2002
Posts: 1289
Interesting. What's your current basis, then? :)

I've just tried this way and it sounds like shit. Instrument beginnings are being eaten. Maybe some SNG? I'm too dumb for this, apparently :D
2014-07-25 15:34
Linus

Registered: Jun 2004
Posts: 638
My current basis is "50hz is enough for everybody" :)
2014-07-25 17:14
Jammer

Registered: Nov 2002
Posts: 1289
Somehow, I expected that :P
2014-07-25 19:19
Mixer

Registered: Apr 2008
Posts: 422
Quote: My current basis is "50hz is enough for everybody" :)

Applause, if the pun is intended :D
2014-07-26 06:55
Linus

Registered: Jun 2004
Posts: 638
Yours truly takes a bow!
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