Audiosnap - What is 'Proportional Stretching'?

Author
Post
Essentials Only Full Version
Rothchild
Max Output Level: -61 dBFS
  • Total Posts : 1479
  • Joined: 2003/11/27 13:15:24
  • Status: offline
2011/02/19 04:33:09 (permalink)

Audiosnap - What is 'Proportional Stretching'?

Following the guidance in the manual and video on how to snap multitrack drums. All seems to work quite well.

Turned off all the transients on the tracks I wasn't taking timing info from, left them on the kick and snare, did 'lock and merge' and the transients from those tracks were merged to all the others. All good.

Then I just used quantise on the AS palette and it tightened it up nicely. (well some I did by using the transient tool to marquee the select the group of transients across the tracks (vertically) and moving them by hand, then I got lazy and selected all of them and used quantise ;-))

However, in the guide it says that I should hold the ctrl key down while I adjust the transients, and I see this referred to else where as 'proportional stretching' but I can't find an explanation of what the stretch is in proportion to?! Please can someone explain?

Cheers,
Child
post edited by Rothchild - 2011/02/19 08:52:50

www.honestypot.com
#1

7 Replies Related Threads
    Rothchild
    Max Output Level: -61 dBFS
    • Total Posts : 1479
    • Joined: 2003/11/27 13:15:24
    • Status: offline
    Re:Audiosnap - What is 'Proportional Stretching'? 2011/02/19 10:10:59 (permalink)
    Hmm,

    Still not sure what the proportional bit is about but more worryingly when I reopened the project today, with the bassist here, it's all screwed up?!

    It had worked fine and I'd bounced a version of the drums out so I know it had worked but upon reloading a couple of the tracks are not aligned. What's worse is that they jump around when I zoom in and out? So although they play out at one zoom level the transients line up and then as I zoom in the markers in the affected tracks jump forward.

    I'm assuming user error for the moment but it's really annoying as it looks like I'm going to have the make the bassist sit around while I do the alignment again and this time bounce each of the tracks down to make sure I don't lose the work (again!)

    Any help or pointers on this would be gratefully received.

    Cheers
    Child

    www.honestypot.com
    #2
    Rothchild
    Max Output Level: -61 dBFS
    • Total Posts : 1479
    • Joined: 2003/11/27 13:15:24
    • Status: offline
    Re:Audiosnap - What is 'Proportional Stretching'? 2011/02/21 17:25:12 (permalink)
    Seriously?

    No one can tell me the practical difference between moving an audiosnap transient marker and ctrl moving an audiosnap transient marker?

    Cheers,
    Child

    www.honestypot.com
    #3
    brundlefly
    Max Output Level: 0 dBFS
    • Total Posts : 14250
    • Joined: 2007/09/14 14:57:59
    • Location: Manitou Spgs, Colorado
    • Status: offline
    Re:Audiosnap - What is 'Proportional Stretching'? 2011/02/21 18:59:26 (permalink)
    Proportional stretching means all the selected markers move by the same percentage as the one you're dragging with reference to the first marker in the selection. Basically it's what would happen happen if the clip began and ended at the first and last selected transient, and you were to stretch it by some percentage. The time between every pair of adjacent transients in the clip would be stretched by that percentage.

    post edited by brundlefly - 2011/02/21 19:00:27
    #4
    Rothchild
    Max Output Level: -61 dBFS
    • Total Posts : 1479
    • Joined: 2003/11/27 13:15:24
    • Status: offline
    Re:Audiosnap - What is 'Proportional Stretching'? 2011/02/22 02:52:55 (permalink)
    Nice one, thanks.

    So actually I don't really need it if I'm snapping up some live recorded drums as each of the hits needs to be adjusted by a different amount (albeit across all 8 tracks).

    Still not sure what caused a couple of tracks to 'go bad' between saving and reopening the project, I just froze them all once they were redone and confirmed as working.

    Child

    www.honestypot.com
    #5
    brundlefly
    Max Output Level: 0 dBFS
    • Total Posts : 14250
    • Joined: 2007/09/14 14:57:59
    • Location: Manitou Spgs, Colorado
    • Status: offline
    Re:Audiosnap - What is 'Proportional Stretching'? 2011/02/22 11:50:29 (permalink)
    Right. Proportional stretching is basically for slowing down or speeding up a whole section proportionally. And it's got logic issues in that it still limits you to moving a marker to the point where you would have been stretching the previous interval to 400% (or compressing it to 25%) if you were only moving that one marker, even though the other markers are moving along with it, so you should be able to stretch/compress the whole selection by a factor of 4. I don't use it, so I haven't bothered to report this, though I originally reported a bug where proportional stretching just didn't work right at all in 8.0 that was fixed in 8.5.
     
    Anyway, the other stuff you're seeing sounds like garden-variety AS graphical issues, which continue to plague it.
    #6
    Rothchild
    Max Output Level: -61 dBFS
    • Total Posts : 1479
    • Joined: 2003/11/27 13:15:24
    • Status: offline
    Re:Audiosnap - What is 'Proportional Stretching'? 2011/02/22 12:42:35 (permalink)
    Thanks again brundle,
     
    Yeah, except it was more than graphics!
     
    The edit had worked (I had the bounced track to prove it, even exported as an mp3 and sent to the drummer who signed it off as ok.
     
    Then, when I reloaded the project and played back the audiosnapped tracks, one of them was no longer aligned (I could hear it flamming against the other mics) It looked ok until I zoomed in and at a certain resolution all the transients in the one track jumped forward, zoom back out one tick and they jump in to liine, back in and they leapt forward.)
     
    Just as well I don't actually have to rely on this tool! Cheers, Child

    www.honestypot.com
    #7
    hutchinson9736
    Max Output Level: -90 dBFS
    • Total Posts : 9
    • Joined: 2011/03/25 17:01:49
    • Status: offline
    Re:Audiosnap - What is 'Proportional Stretching'? 2011/03/31 14:34:27 (permalink)
    I have the same issue with tracks "going bad."

    That's great that you don't have to rely on this tool.. but others do!  This is a real PITA!

    If you figure out any workaround you let me know!


    #8
    Jump to:
    © 2024 APG vNext Commercial Version 5.1