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ws
Registered: Apr 2012
Posts: 230 |
SID Interlaced Chord question
On a SID, musicians use the effect of playing chords on one channel by quickly altering the frequency of the note by playing for example C E G in rapid succession, mainly via a table/command. (Are they called arps, arpeggios?)
Is the interlace/arp being done by the driver in 50/3 hz? Or is it actually slower for some reason?
Are Tracks like the Armalyte Title tune using 50hz/3 speed chords or is the frequency of the note alteration actually slower? Is there perhaps a SID-side reason why a maximum speed of playing interlaced chords cannot be exceeded, or is the limit just cpu speed?
Did anyone yet make a driver that uses gliding arps/interlaced notes? Any Examples?
Do you have any outstanding/groundbreaking examples for songs that use unusual high chord note interlace rates, like a 3x speed Tune that achieves 50 hz or higher "interlaced" chords?
Thank you for any helpful insight!
[If this has already been covered in another thread please excuse, i didn't know what to search for due to my lack of knowledge of terminology]
ps.: can one of you coders make a demo where the axes of the sprite multiplexer are rotating? |
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chatGPZ
Registered: Dec 2001
Posts: 11149 |
Isnt that just the ADSR bug? |
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ws
Registered: Apr 2012
Posts: 230 |
Is it? I have no idea! Would love to know, though.
Would that stall altering of frequencies and delay the arp? (Would that be emulated by SIDplay3?) |
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acrouzet
Registered: May 2020
Posts: 80 |
Quote: Is it? I have no idea! Would love to know, though.
Would that stall altering of frequencies and delay the arp? (Would that be emulated by SIDplay3?)
It is the ADSR bug, it doesn't stall the notes of the arp, only changes in its overall volume. |
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ws
Registered: Apr 2012
Posts: 230 |
Thanks! Good to know - and finally i understand it, i only read about it out of the corner of my eye and had no real idea how it would sound like.
So, as far as i understand, for it to work properly, the driver would have to be changed to write some certain additional bytes a little bit later/delayed, on the occasion of a special event that is written to the SID? |
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