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Forums > C64 Composing > SID out of tune?
2006-06-28 15:28
carlsson

Registered: Nov 2002
Posts: 41
SID out of tune?

Recently a Speccy person elsewhere posted that:

Quote:
The SID .. tended to be out of tune at extreme frequencies (the Speccy's beeper also suffers this problem). Where as the AY is much closer to perfect pitch.


Apart from being typical C64/SID-bashing (most Speccy people despise the SID for muddy sound blah blah blah), does the poster have a point? I can't recall I ever heard a SID tune that suffers from lack of frequency resolution so it sounds out of tune, except from when it was done on purpose or the musician didn't bother to get a good frequency table.

I know from personal experience that the VIC-20 has a very limited frequency resolution, but it is a completely different chip and supposedly nobody mixes up the two. Maybe if one uses very high frequencies (several thousand Hz?) on the SID, these notes will not be in tune, but few people can hear the difference, and it depends on monitor or other speakers if they can reproduce the notes faithfully.
2006-06-28 16:03
Hate Bush

Registered: Jul 2002
Posts: 465
He must have mistaken the SID for Atari's POKEY (which has, IIRC, 8-bit frequency register).
2006-06-28 16:52
Rough
Account closed

Registered: Feb 2002
Posts: 1829
I'd rather say he doesn't have a clue.
2006-06-28 16:59
Scout

Registered: Dec 2002
Posts: 1570
Quote: I'd rather say he doesn't have a clue.

It's the Speccy vs. C64 debate revisited!
Yay!

Although, Speccy demo's *can* be cool -> http://youtube.com/watch?v=RM6ZviAQ9_8

---
Commodore 64 Scenemusic Podcast
http://8bitmayhem.blogspot.com/
2006-06-28 16:59
chatGPZ

Registered: Dec 2001
Posts: 11386
the sid actually has very good frequency accuracy and resolution.
2006-06-28 17:04
chatGPZ

Registered: Dec 2001
Posts: 11386
"Although, Speccy demo's *can* be cool -> http://youtube.com/watch?v=RM6ZviAQ9_8"

ouch, what a trainwreck of a tune :=D

some cool pictures there though
2006-06-28 17:32
Scout

Registered: Dec 2002
Posts: 1570
Quote: "Although, Speccy demo's *can* be cool -> http://youtube.com/watch?v=RM6ZviAQ9_8"

ouch, what a trainwreck of a tune :=D

some cool pictures there though


That tune is absolutely a disaster...
Tells alot about what is out of tune and what is not. :S

---
Commodore 64 Scenemusic Podcast
http://8bitmayhem.blogspot.com/
2006-06-28 18:24
TDJ

Registered: Dec 2001
Posts: 1879
Fuck that tune, the demo rocks!
2006-06-28 18:30
chatGPZ

Registered: Dec 2001
Posts: 11386
"Fuck that tune, the demo rocks!"

seeing how its running on a 128k speccy and streaming everything from the floppy.... not impressing at all.

and in an animation demo i'd atleast expect a cool tune :=)
2006-06-28 18:34
tlr

Registered: Sep 2003
Posts: 1790
Quote: He must have mistaken the SID for Atari's POKEY (which has, IIRC, 8-bit frequency register).

The VIC-20 has 7-bit frequency registers. :)
2006-06-28 18:45
TDJ

Registered: Dec 2001
Posts: 1879
Quote: "Fuck that tune, the demo rocks!"

seeing how its running on a 128k speccy and streaming everything from the floppy.... not impressing at all.

and in an animation demo i'd atleast expect a cool tune :=)


I don't care about technical power, the 3d cartoon effect is one of the freshest things I've seen in years. So yes, it rocks.
 
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