• SONAR
  • extracting tempo from existing tracks
2014/01/04 10:55:36
ChewingAluminumFoil
Reading a bunch of stuff on the 'net.  AudioSnap is complicated as it is but SONAR seems to have changed quite a bit so every article is different and the menus and shortcuts are different.
 
I've got X1 and I'm trying to extract a timeline from an existing track which was done with a drum machine.  I did this the other day on another tune, just fumbled my way into it, but unfortunately don't remember what exactly I did.
 
I can hit A to enable the AudioSnap palette for the old drum machine clip.  I can "Set Project Tempo from Clip" and while the project tempo seems to update it doesn't change the bar markers.
 
I'd like to be able to extract the old bars and then use this tempo map to do some new more modern drums.  I did it the other day...
 
I'll keep reading but my modus operandi is to post here and it seems one of you gurus can often give me the pointer I need.
 
Thanks,
 
CAF
2014/01/04 11:33:26
FastBikerBoy
See if this helps at all.
2014/01/04 11:51:13
ChewingAluminumFoil
That's exactly the clip I watched the other day that helped me fumble into things.  And it helped again, I think I'm set.  I had to do an odd "threshold" fiddle at the start to get my count to get picked up right.  I saw the little diamonds showing prospective transients but I couldn't drag the time markers to 'em.  I tried "promote" but that didn't seem to do anything.  Is there a cool way I could have made those valid transients short of playing with the "threshold" setting?
 
Huge thanks.
 
CAF
 
2014/01/04 12:17:11
ChewingAluminumFoil
Hmmm... something is a little funny.  Takes a bit for things to fall into sync.  First bars are off a bit, not much.  Back to fumbling... :-)
 
CAF
2014/01/04 13:02:37
brundlefly
A few thoughts that might help:
 
1. If the tempo of the clip is misdetected, SONAR will tend to insert superfluous "User" markers (stubby markers with solid diamond handles/heads) at quarter-note beat markers in the timeline where there are no actual audio transients. Usually there will be another tempo in the clip tempo map dropdown that's closer to the actual tempo that will eliminate most or all of these superfluous User markers when selected. then you can select any reamining User markers and delete them (you'll want to bind a key combo to Delete Marker to speed up the process, since each Delete command deletes only one). One way or the other, it's a good idea to get rid of those before doing anything.
 
2. In addition to adjusting the Threshold, you can enable or disable markers using the transient tool's context menu. Promoting a marker locks whatever that state is whether enabled or disabled so the Threshold setting no longer affects it. I like to get the clip in a state where all of the markers and only those markers I want are enabled, and then Promote them all.
 
3. For a drum clip that originated with a drum machine, it's likely that the tempo is fixed and consistent, in which case the best thing to do would be to find the average tempo of that clip, and set that one fixed tempo as the initial tempo in SONAR. I like to do that using Set Measure/Beat At Now instead of Audiosnap:
 
- Drag the clip to align the first transient to its corresponding beat in the timeline (e.g. could be a pick-up note on the last 8th of the first measure).
 
- If that time isn't 1:01:000, use Set Measure/Beat At Now (Shift+M) to "pin" that first beat so that becomes the reference point for determining tempo.
 
- Count out several measures listening to the clip set the Now time at a downbeat transient using Tab-to-transient, and use Shift+M again to set the correct measure and beat in the timeline to the absolute time of that event.
 
- SONAR will alter the tempo at the first point you pinned to make the specified timeline beat fall on that transient, and add a like tempo value to the beat you set as a reference for setting later beats if needed.
 
- If the clip was recorded to a click, that may be all you need to do; if not, you can set additional beats every few measures or every measure, or even within measures or beats (note that beats are divided into thousandths, not 960 ticks, so 02:480 is 02.500). With your drum machine clip, you're likely to find that the calculated tempo comes out very close to some whole number of beats per minute, and you can go back and set the project at that tempo.
2014/01/04 13:11:12
mettelus
A quick setup to audiosnap is to first get a rough tempo and insert that (count beats for 10 seconds and multiply by 6). Next slide tracks to the right to give yourself about a bar of "dead space," and then disable snap to grid. Next zoom in on the first transient (what you feel is the 1:1) and slide that to a measure marker. Once you have done that bounce to clips. Then start where Karl's video does above. I just watched the above video and it does not make mention of these specifically there, but Karl does make that point (specifically) in other videos he has done.
2014/01/04 13:15:08
ChewingAluminumFoil
Wow, thanks for all the help.  Still working thru things.  Quick question: what should "promote" do?  I thought I'd read long ago it made a proposed transient into a "real" one but I don't see any change in the UI when I promote and it won't let me drag the timeline to a promoted marker.
 
CAF
2014/01/04 13:27:46
ChewingAluminumFoil
And an ancillary question: there's a transient it simply refuses to recognize.  I've listened to it, nice clean individual drum hit, shows up nicely on the waveform, but it's only showing once of those little diamond things.  I can turn threshold down to zero, lots of other transients light up, but not that one.  And it seems to be key to getting it oriented.
 
CAF
2014/01/04 13:31:13
brundlefly
Should have mentioned: Alt+click with the transient tool to add a User marker.
 
Also, as mentioned, Promote just locks the enabled/disabled state of a marker so it's not affected by Threshold or Resolution changes. Promoting does not inhibit the ability to move or stretch a marker or to snap a beat to it. If beat a beat marker won't move to a transient, something else is going on  - maybe a marker in the way that's hidden at the current zoom level...?
2014/01/04 13:50:00
ChewingAluminumFoil
brundlefly -- I'm trying to follow your steps about promoting but nothing seems to happen when I promote.  I'm in the Click Map Editor, and I can right-click on the diamond and I see Disable, Promote, and grayed out Delete.  If I select Promote, the checkbox lights up showing it's promoted but when I close the properties on that transient I see nothing in the UI to indicate it's been promoted.  I can't drag times to those transients.  Now if I insert a user marker using alt-click, that works great and I can assign time to it.  But I can't create a user marker over the gray diamond markers.  And Delete is always grayed out so I can't scrub and make my own.
 
CAF
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