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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. |
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Rough
Account closed
Registered: Feb 2002
Posts: 1829 |
what about porting that Spectrum demo onto the 64? hehehe
The Spectrum "emulator" for the 64 wont do it. |
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carlsson
Registered: Nov 2002
Posts: 41 |
Zyron and dalezy: In that case, the fault was in the respective music programs (Future Composer, Goat Tracker) that led to notes out of tune, not the chip itself. It is fully possible that the Speccy poster once upon a time had tried to use some semi-poor music program(*) on the C64 and from that made a conclusion that the SID chip was to blame.
(*) I remember Make Music with Mistertronic was terribly out of tune. On the other hand, it is more an educational program than a competitive music program. |
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Laxity
Registered: Aug 2005
Posts: 459 |
Quote: fuck, that does look cool. i feel a touch of speccy penis envy :-P
Agree.. Reminds me of a 64k demo for the PC by Farbrauch and someone else.. Had some poor conversion of the Delta music by Rob in it...
Anyone knows what the CPU clockspeed of the Spectrum 128k? |
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Melkor
Account closed
Registered: Apr 2006
Posts: 11 |
The cpu speed is 3.5469 MHz |
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Graham
Account closed
Registered: Dec 2002
Posts: 990 |
Nopes, the real Sinclair Spectrums have 3.5 MHz clock. Only the Amstrad Spectrum clones have 3.55 MHz clock which is also the reason for some incompabilities with the original Speccys.
And to the "SID out of tune" crap: That's total bullshit. The SID has 16 bit frequency registers which not only allow to hit a frequency exactly (so no "out of tune") but even allows for smooth frequency slides. And additional to that the frequency is inverse linear which allows the same accuracy at ALL frequencies. (Unlike the Atari POKEY which is least accurate at high frequencies and more accurate at lower freqs) |
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chatGPZ
Registered: Dec 2001
Posts: 11387 |
"Agree.. Reminds me of a 64k demo for the PC by Farbrauch and someone else.. Had some poor conversion of the Delta music by Rob in it..."
doesnt it refer to "nature sux" by axis ? |
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Laxity
Registered: Aug 2005
Posts: 459 |
Quote: "Agree.. Reminds me of a 64k demo for the PC by Farbrauch and someone else.. Had some poor conversion of the Delta music by Rob in it..."
doesnt it refer to "nature sux" by axis ?
That might very well be, but personally the discussed 3D effect reminds me of a demo by Farbraush and Scoopex.
http://www.scene.pl/index2.php?f=prods_detail&prodid=8 (Sorry it's a polish page, but that was the first thing showing up in my Google search) |
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Laxity
Registered: Aug 2005
Posts: 459 |
Quote: The cpu speed is 3.5469 MHz
Ok.. 3.5MHz, 3.5469MHz .. Ok, I though the framerate was impressive, but with 250% extra cpu power, no wonder. |
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Scout
Registered: Dec 2002
Posts: 1570 |
Quote: That might very well be, but personally the discussed 3D effect reminds me of a demo by Farbraush and Scoopex.
http://www.scene.pl/index2.php?f=prods_detail&prodid=8 (Sorry it's a polish page, but that was the first thing showing up in my Google search)
Acme & Psychic Link did it first in Paper -> http://www.pouet.net/prod.php?which=75
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Commodore 64 Scenemusic Podcast
http://8bitmayhem.blogspot.com/ |
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TDJ
Registered: Dec 2001
Posts: 1879 |
Yes, Paper rocked as well .. man, has it been almost 10 years already? :(
What I like about the spectrum demo is that the colours are all over the place. Reminds me of the Hein de Kort comics :) |
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