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Elastic Audio/Warp/Quantize Items Issue Tools
issueid=439 07-02-2009 10:54 AM
sir sir is offline
Human being with feelings
Elastic Audio/Warp/Quantize Items
Easy/automatic stretching of audio items to grid

SUMMARY UPDATE 04.2011:
Basics things we are missing:
- Warp or transient markers that can are saved along with the track like ProTools or Sonar would do.
- The ability for an item to slave to the tempo map. In other words “follow temp map” as Sonar would put it. (They currently support only the start of an item syncing to the tempo map.
- With these two actions and along with many others that they already have they could implement the more sophisticated:
- “audio quantization”
- “Learn song tempo from audio”
- Multi-track audio quantizing with out cuts

Basic things we have:
- Detect transients (on the fly) (tab to transients)
- Dynamic spits
- Visual Transient detection adjustments
- Splitting at transients ( single multi track)
- Media time base of: Start of Beat, Beat start and stretch, and time based
- Quantizing the start of audio clips

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Elastic audio (or whatever you want to call it) allows non-destructive time stretching of events, usually for aligning a performance to the grid or tempo. I propose:

1) Transient detection (a la dynamic split and tab to transient) but instead of splitting an item, it simply puts a sort of marker on the transient itself. So, for example, there would be a vertical line at the start of every kick drum hit.

2) The transient markers should be able to be clicked and dragged around. Moving a marker would stretch the audio on each side and effectively move the transient around in time. It should only stretch to the next transient marker on each side. Ideally, there would be a way to enable/disable specific transient markers to clean up false positives or add in missed notes.

3) A fancy quantize to grid dialogue for audio events. This would allow you to quantize the transient markers to the grid automatically, including options for swing percentage, strength percentage, humanize, and ignoring or only correcting markers that are within or outside of a certain range near the marker. So, for example, any transients that are already within 20ms or 8% of the grid could be ignored, to keep the "human" feel. There should also be options to quantize to half notes, quarter notes, sixteenth, etc.


Extra thoughts:

This should support grouping of tracks (especially drum tracks) and applying the same stretching across all the tracks. So you can quantize the snare, but it will stay synced up with overheads, etc.

All the functionality of this request is built into Reaper already, more or less, except for the transient markers. All we need is a clean, unified interface.

reference thread: http://forum.cockos.com/showthread.php?t=19241
Issue Details
Issue Type Elevated FR
Project Deprecated REAPER issue tracker
Category Editing behavior
Status Popular Request
Priority 5 - Medium
Suggested Version 3.05
Implemented Version (none)
Users who would use this feature 261
Users who would not use this feature 1
Assigned Users (none)
Tags (none)

07-02-2009 11:46 AM
Human being with feelings
 
this is one needed since a lot I think...

reaper is needed for a tool like live warp, sonar audio snap or acid beatmapper.

maybe a mix with the best of each one of them would be awesome to view into reaper...
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07-02-2009 01:24 PM
Human being with feelings
 
it would be great also to have an action to:

warp project beats to selected item's beat markers

this would automatically place tempo changes to move the project's beats to line up with the beat markers in the selected item.
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07-03-2009 10:58 AM
sir sir is offline
Human being with feelings
 
Quote:
Originally Posted by semiquaver
it would be great also to have an action to:

warp project beats to selected item's beat markers

this would automatically place tempo changes to move the project's beats to line up with the beat markers in the selected item.

Good call. That would be very helpful.

While we're at it, it would be good if it went the other way too, where you could change the tempo of the entire song or of sections of the song and have the beat markers automatically stretch to conform to the new tempo.
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07-13-2009 03:37 AM
Human being with feelings
 
This is the only FR I am begging for.

Being able to put warp markers within an audio item instead of cutting it would be a gift to humanity. It would save hours when editing drums.

Combined to stretching algorithm of élastique 2 pro, this would be a fearsome tool.
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07-14-2009 04:10 AM
Human being with feelings
 
Im really happy with reaper (really really happy)
but i REALLY need Drum quantizing ala Pro tools beat detective

so a really big +1
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07-14-2009 05:15 AM
jas jas is offline
Human being with feelings
 
Quote:
Originally Posted by The-Zeronaut
Im really happy with reaper (really really happy)
but i REALLY need Drum quantizing ala Pro tools beat detective

so a really big +1
A very nice application that accomplishes this task well is made by Steven M. Massey (former programmer for Digidesign):

http://www.smassey.com/plugin.html
http://www.masseyplugins.com/

The plugin called massey.dtm is freeware for any owners of his other plugs.

Please watch this video:

http://vimeo.com/2942713
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07-14-2009 10:06 PM
Human being with feelings
 
A true Beat Detective alternative would be awesome.
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07-14-2009 11:14 PM
Human being with feelings
 
any illustration/vid/pic?
could be useful.

cheers
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