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stunt
Account closed
Registered: Jul 2006
Posts: 48 |
Sid ADSR problem / hardrestart
Hey guys,
I more or less understand the hardrestart thing,
but can anyone explain to me what the exact problem
with the ADSR is? So explain what the effect is when i dont
use hard restart.
Lots of thx.
The audioarts sidproject (hardware and software pimping of c64)s:
http://www.audioarts.nl/getNews.php?ID=19 |
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stunt
Account closed
Registered: Jul 2006
Posts: 48 |
Ok guys,
that's really great. Everyone has his own favorite sid etc. But that's just a matter of opinion.
What interests me is the *facts*, i just want to know WHAT is different
between all sids:
- the cutoff range (preferably give indications of frequencies) of different revisions of both 6581 and 8580.
- the resonance
- de steepness of the fliters of different types and revisions
- the response of the filter
and most important:
- the exact symptoms of the ADSR bug. I want to know *exactly* which adsr values give problems without or even with hardrestart, and wether, and if so, how this differs between different types and revisions of sids.
So give me your experiences:
- what adsr values to avoid etc
- if you are just familiar with 1 or 2 sids, just spam everything you experienced working with your own sid and tell what type and revision it is.
And dont give me that i should just experience myself, because believe me i will and have done that a lot. But i just think it's stupid to re invent wheels that are already invented. That's what a forum like this is for right? to share knowledge and skill so its possible for us all to create cooler and better and more beautiful audio and viz.
Peace out
Stunt - the guy that pimps c64s and bleeps
AudioArtsSidProject: http://www.audioarts.nl/getNews.php?ID=19 |
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cadaver
Registered: Feb 2002
Posts: 1153 |
Bugs happen in different playroutines/editors in different ways, because the SID clocks its internal counters (which are indirectly responsible for ADSR bugging) each CPU cycle. Any values to avoid are situation-dependent.
Of course, studying the reSID source code (envelope generator) should give you a fairly good understanding of what's exactly happening.
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Hein
Registered: Apr 2004
Posts: 933 |
I can't wait to hear your first sidtune. Musically it's not a problem for you to create something cool I guess, but only by experimenting you can find out the true nature of SID, not by collecting data. And it's an ongoing debate, which sid is best.
But if you desperately seek info, I think you should contact the ones trying to emulate the sid. Those are the laboratory people. |
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cadaver
Registered: Feb 2002
Posts: 1153 |
I get the feeling that if someone prepares to utilize the SID too scientifically, he will only be disappointed. There are no lookuptables in players to auto-correct filter output for each sid revision ;)
And yeah, there is no need to get too agitated, it's not like people are deliberately withholding information so as to pass on the suffering of experimentation, it's just that most simply go by their feeling. |
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Bamu®
Account closed
Registered: May 2005
Posts: 1332 |
As long as the editor/player has a *good* hardrestart, I do not bother much about the SID-BUG. :D |
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cadaver
Registered: Feb 2002
Posts: 1153 |
Now while we're at it, don't forget to write the rest of nata-FAQ. (sigh, another fine thread derailed...) |
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Bamu®
Account closed
Registered: May 2005
Posts: 1332 |
Quote: Now while we're at it, don't forget to write the rest of nata-FAQ. (sigh, another fine thread derailed...)
May I ask who is writing the nata-FAQ ? |
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Bamu®
Account closed
Registered: May 2005
Posts: 1332 |
Ahhh, now I understand! :]]]]]]]]]] |
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Stainless Steel
Registered: Mar 2003
Posts: 966 |
I have the feeling nata is getting obsessed with that hard restart issue :-) |
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abracadabra
Account closed
Registered: Jul 2006
Posts: 14 |
You probably never have seen how nata is composing music. :)
A good/advanced hardrestart is essential for him. |
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