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Forums > C64 Coding > Trim SID
2016-12-13 09:14
oziphantom

Registered: Oct 2014
Posts: 95
Trim SID

Is there anything like SidReloc that lets you shorten a SID. I have 3min+ SIDs that I basically need the first 40 seconds of.
2016-12-13 09:56
iAN CooG

Registered: May 2002
Posts: 1655
you can only edit it in its editor, it's not a wav that can be cut at any given file offset =)
2016-12-13 10:03
ChristopherJam

Registered: Aug 2004
Posts: 503
Just call the play routine for 2000 frames, and ramp down $d418 yourself over the last few :D

(though, you might need to be careful about filter settings for that last part)
2016-12-13 10:09
algorithm

Registered: May 2002
Posts: 671
Some music players have a master volume control value somewhere at the start of where the player is located located in the first 16 bytes or so near the init and play jump values. Can directly reduce the value to fade down the volume without having the issues with the filter
2016-12-13 14:06
lft

Registered: Jul 2007
Posts: 229
One thing you could do is run SidReloc for the desired number of frames (there's an option for that), then look at the memory map (enable verbose output). Any byte that wasn't used can be safely changed to zero in the file, and this will improve the compression ratio. Naturally, you wouldn't do this by hand, but patch SidReloc to do it for you.
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