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SIDWAVE
Account closed
Registered: Apr 2002
Posts: 2238 |
How many BPM is a C64 or HardSID ?
[03:19] <rambones> any geniousses ?
[03:19] <rambones> how many bpm is a C64 raster irq ?
[03:20] <rambones> or as i this case. the music is at 51 hz... so i wanna find the sync to the beat
See. i wanna sync a sampled sid to the tracker..
So... it was sampled with HardSID which is 51 hz..
It must be around 120-130... but i am uncertain..
No clue what to google for |
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Frantic
Registered: Mar 2003
Posts: 1641 |
What do you mean by stable? Do you mean a SID that runs at 125.00 BPM, in contrast to 125.3 BPM?
Some PC tools allow for 0.xx precision in BPM settings. The ones you use don't, or? |
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Stainless Steel
Registered: Mar 2003
Posts: 966 |
Not sure if this is a good example of the before mentioned method.
Its a last ninja remix i did 10 years ago on the PC with Fasttracker2.
It uses the original sampled sid tune chopped up to small parts and tracked along with it.
Please kindly ignore the poor mastering quality.
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Zyron
Registered: Jan 2002
Posts: 2381 |
You can probably fine-tune the SID-samples to make them sync 100% |
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SIDWAVE
Account closed
Registered: Apr 2002
Posts: 2238 |
Quote: What do you mean by stable? Do you mean a SID that runs at 125.00 BPM, in contrast to 125.3 BPM?
Some PC tools allow for 0.xx precision in BPM settings. The ones you use don't, or?
Yes, because i have tried this.
It is in sync for (appears to be) 1 minute.
Ok, so chopping them up, will resync.. yes...
Its just a lot of work :( |
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SIDWAVE
Account closed
Registered: Apr 2002
Posts: 2238 |
Quote: Not sure if this is a good example of the before mentioned method.
Its a last ninja remix i did 10 years ago on the PC with Fasttracker2.
It uses the original sampled sid tune chopped up to small parts and tracked along with it.
Please kindly ignore the poor mastering quality.
Yes :-)
I was just trying to avoid the work of chopping,
and make an automated method to get it to work.. |
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Frantic
Registered: Mar 2003
Posts: 1641 |
Sorry.. I didn't read the initial post properly. I missed the 51hz (is that exact?) part and the sample being from hardsid... 51hz gives you 127.5 beats per minute instead. |
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goto80
Registered: Jan 2002
Posts: 138 |
i get perfect sync when running a C64-tracker (on a PAL C64) with a tempo in ableton live set to 2 decimals, ie 125.31. it seems as if it is not always right though, which could be just my brain imagining, or could it have something to do with, uhm, electricity? --- (but yeah, i guess this a bit OT aswell) |
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Frantic
Registered: Mar 2003
Posts: 1641 |
It is kinda funny that there is something like a "standard song speed" on the C64. :)
(...even though of course not ALL tunes use this speed.) |
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Mace
Registered: May 2002
Posts: 1799 |
Quote:I was just trying to avoid the work of chopping PC audio programs like Sony Acid can do that work for you. I believe there are more tools (Recycle?).
Also there's the method of timestretching, available in Cubase SX 3 IIRC.
Quote:It is kinda funny that there is something like a "standard song speed" on the C64. Well, there are various speeds, of course. It depends on per how many rastercycles you cycle the music.
And then there's of course music that doesn't run on Raster IRQ. I believe Soundmonitor can be one of those... |
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(451)
Account closed
Registered: Mar 2012
Posts: 3 |
Quote: This is a function, of course, of the speed in your editor, and a function of how many lines you consider to be a beat :)
So if you multiple editorSpeed x lines-per-beat, you'll get a number out that is frames per beat.
Multiply 51(50) x 60 to convert to frames per minute (3060/3000), then divide by frames per beat.
I'm attempting to work this out, but I'm obviously no math genius. If anyone could tell me what I'm doing wrong alternatively posting EVERY possible SID (PAL) speeds in BPM I would be well happy!
My song tempo is 07 (in SID Wizard) and my beat is 6 lines.
7*6=42 (frames per beat)
3060/42=72,8571 BPM
Right?
When I play it back in Ableton Live with 72.86 it's not quite right, it plays a bit too slow, and it's more than just that 0.0029 difference. So I tried recalculating it with 3000 instead (71.43 BPM) and it gets better (the sync gets disturbing after about 3 bars 4/4 time instead of half a bar).
This was done with emulation (Vice) since I'm home for christmas and can't try it on the real thing, so maybe the emulation is the issue, but I can't figure out how to get the 187.967033, 125.3113553, 93.98351648 values either, so I'm thinking I'm doing something wrong in the calculation process.
Thanks in advance! |
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