[Rwp] Time stretching

Thu Sep 17 19:11:36 EDT 2015

Two things. To save time on button mashing, you can make your selection and  then split it with Shift+S. 

Before when you would stretch the item   without moving the item after it further down the time line first, You said when you played it back after stretching it it would stop where the next item started. Did playback stop or did the time stretching stop and it continued on to play the next item as if thats where the time stretching ended. 

> On Sep 16, 2015, at 10:07 AM, onlineeagle via RWP <rwp at bluegrasspals.com> wrote:
> 
> So, I’ve had a bit more progress with time stretching, and thought I’d give a step by step explanation of how I’m currently doing it. Once you get used to it it seems to work pretty quick.
> 
> 1. Split your items. Put a split in the place where you’d like to create a new item. I do this by ever so slightly going beyond the point that I want to split, then pressing control and space to pause, then pressing shift and Z in order to move the cursor to the previous 0-crossing point, which means you are less likely to get pops and clicks. Then I press S to split. I do this at the point I’d like the item to begin, and at the point I’d like it to end, and become the next item.
> 
> 2. cut the item next to the one that you want to time stretch. I do this by selecting the item with control right arrow, then hitting the applications key, pressing T to move to the cut items option and pressing enter.
> 
> 3.  This next bit is perhaps optional, but I find that doing this is helpful for slowing down the item. I then move a few bars forward in the project and paste that item.
> 
> 4. I then move to the start of the item I want to time
> stretch with control left arrow, and make a start selection with alt shift left bracket.
> 
> 5. I then start playing the track. In this case I want the item to be stretched quite a bit slower, so I let the track run for a bit and then make an end selection with alt shift right bracket. This is why I pasted the next item further along in the track, because otherwise my playback would stop after the item I wanted to time stretch had ended, because in this case there is no more audio to play. As I say, this is optional.
> 
> 6. I then run the action, stretch items to fit time selection. I have assigned a shortcut to this, 	which is Control alt shift F2, but obviously you can choose your own. This, like the action name suggests, stretches the item to fill the specified amount of time you’ve selected with the alt shift bracket keys.
> 
> 7. Listen to it back to make sure there’s no pops or clicks. Making sure crossfade is turned on with alt X, or in the options menu, will help avoid pops and clicks between stretches and cut section. Then move to your next item with control right, cut it by pressing applications key, T and enter, and paste it where you want it. If you’ve got autocross fade enabled then this should work pretty well.
> 
> Hope that helped, and gave some kind of summary on this irksome little conundrum. Feel free to add thoughts if anyone has any suggestions to make this process quicker. This seems to be working nicely for me so far.
> 
> I have also posted a feature request on the Reaper forum, asking for an option to allow items to automatically move left or right to accommodate time stretched items, so that you can make a time selection simply by selecting the item, opening the media items properties window, and changing the rate. If anyone else feels that this feature would be of benefit, feel free to add your voice to the thread. Otherwise, this solution will have to do, which might turn out to be absolutely fine. The link to the thread is:
> http://forum.cockos.com/showthread.php?t=166495
> 
> 
> Thanks.
> 
> 
> 
> 
> 
> Sent from my iPhone
> 
>> On 16 Sep 2015, at 01:08, Chris Belle via RWP <rwp at bluegrasspals.com> wrote:
>> 
>> yeh, well, reaper lends itself to that sort of power user command line and non-mouse options.
>> 
>> It's like the linux of the DAW world.
>> You just have to figure out how to do it 'grin'.
>> 
>> 
>> 
>>> On 9/15/2015 8:47 AM, onlineeagle via RWP wrote:
>>> Hi Chris, thanks for having a play with that. Initially when I posted this topic, I assumed that the reason I wasn't getting this to work was either because I was blind, stupid, or maybe both. However, I've posted this issue on the Reaper forum and someone has confirmed that this is also how it works for sighted people. Apparently, it is a requested feature that Ripple status influences time stretching behaviour, but seemingly this is not the case at present. I have never posted a feature request, but there's probably a place on the forum. Incidentally, the chap who responded to my time stretching query was very good at providing a non-mouse-based description of time stretching items. While the solution didn't remedy this issue, it was gratifying to observe this interaction, and that regular sighted Reaper users are able to help us blindies by suggesting action-based responses, rather than "just drag the mouse over the wave form" type responses.
>>> 
>>> I'll give your work-around a go later today, but I think that's the best we're going to get for now, and hopefully Reaper will allow the ripple mode to influence this behaviour in the future.
>>> 
>>> Thanks.
>>> 
>>> Sent from my iPhone
>>> 
>>>> On 15 Sep 2015, at 03:53, Chris Belle via RWP <rwp at bluegrasspals.com> wrote:
>>>> 
>>>> If you nudge one item down and do your stuff while ripple is turned on,
>>>> and nudge it back up it seems to cross-fade the items and shorten your over-lap, but if you leave it separated on different tracks, then it plays the way you stretched it.
>>>> 
>>>> So you can do what you want, might mean moving the furniture around a bit manually with reaper's nifty push and shove and nudge and growing edges and such but a little ear work should do it just fine.
>>>> I'm now starting to experiment with stretch markers,
>>>> and locking tempo and such, but for the longest time I've done reaper rubber-banding with just feeling it and by ear,
>>>> and that has worked well for me, I have this client who jumps quarter notes and 8th notes like a frog in a pond, and I just pat my foot, and line him up I usually don't have to split tracks, but sometimes I have to take out whole chunks,
>>>> and then nudge the edges together nicely, and reaper usually let's me get it done with not too muchbother.
>>>> 
>>>> Sometimes I mess it up and have to take another swing at it,
>>>> but if I cut my wood right usually the meld is pretty seamless.
>>>> 
>>>> YOu can use your shift and top row number keys to slow down and pitch things the way you like.
>>>> 
>>>> 
>>>> 
>>>> 
>>>>> On 9/14/2015 9:40 PM, Chris Belle via RWP wrote:
>>>>> Ok, I made it work but I put each item on a different track, and turned on rippling for all tracks.
>>>>> 
>>>>> Then I slowed down one and they will indeed overlap then.
>>>>> Not the most elegant way to do it, but it do work.
>>>>> 
>>>>> My work around to get it back in a project on a single track would be to render or bounce.
>>>>> Give it a shot.
>>>>> 
>>>>> 
>>>>>> On 9/14/2015 9:29 PM, Chris Belle via RWP wrote:
>>>>>> Does it make any diffrence moving those items to another track, and adjusting the overlap manually?
>>>>>> 
>>>>>> Reaper is so powerful but maddening.
>>>>>> 
>>>>>> Simple things I have done for years I have trouble doing with it,
>>>>>> some of it is learning, some of it is weird reaperness.
>>>>>> But I am hanging in there and slowly knocking over targets one by one.l
>>>>>> 
>>>>>> Thank god I still have sonar for my bread and butter work.
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>>> On 9/14/2015 5:49 PM, onlineeagle via RWP wrote:
>>>>>>> Oh, this is a bugger Mr Monster. Ripple toggling does not make the slightest difference when stretching items. If I slow the item, then the item will not play in full, because the next item will interupt it. I cannot see the logic in this system. If I want to time stretch some audio, chances are that I might want to actually time stretch all of that audio, not just the amount of audio that'll fit before the next item interupts it. There doesn't seem to be a way of time stretching a selection, unless I'm missing something. I also tried creating a region, thinking that maybe I could time stretch a region, but I can't seem to find such an option. I can try posting this in the Reaper forum, and see what happens. I'm surprised that more people aren't finding this a problem. Perhaps it's easy to do with a mouse, and time stretching items just isn't the answer. But I can't see any other way of applying time stretches other than to items. I have trawled the Internet, I have prayed to the gods - all of them, just to be safe - but alas, nothing!
>>>>>>> 
>>>>>>> Sent from my iPhone
>>>>>>> 
>>>>>>>> On 14 Sep 2015, at 23:11, theoreomonster--- via RWP <rwp at bluegrasspals.com> wrote:
>>>>>>>> 
>>>>>>>> Yeah i think this is a case of different DAW’s do different things differently. In Reaper  and Pro Tools you will have to use Ripple or  Shuffle mode respectively to have the audio move to the left and fill in th   gap of whatever got cut. You can Assign the different ripple modes to keyboard hot keys so you can quickly toggle between them on the fly. Also Reaper has a Remove items moving later content which does the same as one of the ripple mode.  Experiment with Chaining that next to a  other actions for selections  and you may find an even faster workflow.  Others using Sonar 8.5.3 is still an option lol.
>>>>>>>>> On Sep 14, 2015, at 5:46 AM, onlineeagle via RWP <rwp at bluegrasspals.com> wrote:
>>>>>>>>> 
>>>>>>>>> Hi, thanks again for getting back to me on this. I understand intellectually what is happening and why it's happening, but I assumed there would be an option when stretching to have the next item move to the left a bit in order to facilitate a smooth transition, and so that your time stretched audio seamlessly intigrates with the rest of the audio, without silence. If there was a way of doing the time stretch with the item glued, unticking the loop option so that you have the silence, and then having an option to somehow trim that residual audio, then that would be great. If this is what you are talking about, then I apologise for my slowness. However, I think you are suggesting that I do the time stretch, then manually select the audio I want to keep and then do the trim thing. This obviously would work to a degree, but it just seems like doing the same thing twice, and there is room for error, in that I'd have to make an accurate selection. Similarly, I could achieve the same result by just selecting the audio I don't want and deleting it with ripple on. If the residual audio from the time stretch split into a seperate item, then I could simly delete that item. That would make sense to me. I just think Reaper must have a better way of doing this that I'm missing. Failing that, then I'm just going to have to try and experiment using your suggestion. But Sonar didn't have this issue. You made your time stretch, and that portion of audio was altered, and the rest of the audio on that track moved left or right to accomidate it. Thanks.
>>>>>>>>> 
>>>>>>>>> Sent from my iPhone
>>>>>>>>> 
>>>>>>>>>> On 14 Sep 2015, at 02:24, theoreomonster--- via RWP <rwp at bluegrasspals.com> wrote:
>>>>>>>>>> 
>>>>>>>>>> Yes but if you are playing something at double time its going to be faster, which means it will happen in half the time. Which is why if you had loop checked it repeated it self because it looped to fill the space that would of been empty. If you don’t have loop check it has empty space cuz the item still has blank room there there was once audio. By trimming the iTem you tell it to make the length of the item the new size that just have audio instead of the original length.
>>>>>>>>>> 
>>>>>>>>>> 
>>>>>>>>>>> On Sep 13, 2015, at 6:58 PM, onlineeagle via RWP <rwp at bluegrasspals.com> wrote:
>>>>>>>>>>> 
>>>>>>>>>>> Oi, thanks. I suppose I could do that, but surely there must be a less fiddly way of achieving this? I would have thought that it would be logical that people would want to select a piece of audio, time stretch it, and have the rest of that audio play immediately afterwards. It seems strange that this seems like an impossibility to achieve, given that Reaper's philosophy appears to be that you can optomise and modify pretty much everything. Every tutorial on the Internet about time stretching talks about dragging the mouse over the portion of audio. There has to be a way. When I used Reaper on the Mac, I remember thinking how time stretching was the easiest I'd ever experienced. Better than Sonar or ProTools. However, I think I might have been selecting a portion of audio and changing the tempo for that selection. I certainly wasn't using items, as that didn't seem doable on the Mac. Oowever, if I did change the tempo, then this would affect the entire project, and not just !
>>>>>>>>>>> the one audio track.
>>>>>>>>>>> 
>>>>>>>>>>> Sent from my iPhone
>>>>>>>>>>> 
>>>>>>>>>>>> On 13 Sep 2015, at 22:39, theoreomonster--- via RWP <rwp at bluegrasspals.com> wrote:
>>>>>>>>>>>> 
>>>>>>>>>>>> Select the part of the item that has audio (leaving the blank part unselected) and then there should be a command to trim item to selection thus getting rid of the blank part.
>>>>>>>>>>>> 
>>>>>>>>>>>>> On Sep 13, 2015, at 10:39 AM, onlineeagle via RWP <rwp at bluegrasspals.com> wrote:
>>>>>>>>>>>>> 
>>>>>>>>>>>>> Hi again, here's somethimg I've been wrestling with for the last few days. I want to double the speed of a portion of audio on a particular track. I make a selection and then split that selection to create an item. I select the item I'd like to time stretch. I press shift F2 to open media item properties. I set the rate to 2 then press enter. The item now plays twice as fast, which is great, however the length of that item is still the same, so I now get more audio than I'd like. to try and fix this I glued that item. This time changing the item speed looped the item twice. I'd fixed the residual audio problem but now got a different problem as a reward for my efforts. Still feeling optimistic, I went back into media item properties, and found a loop option that was checked. I unchecked it, changed the rate to 2, pressed enter, and held my breath, ready to proclaim myself a genius for having remedied the issue. The item played twice as fast, which is great, but then there!
>>>>>>>>>>> !
>>>>>>>>>>>> wa!
>>>>>>>>>>>>> s silence where the loop had previously been. So, yet again, I'd found what I thought would fix it, and ended up getting a whole new problem in its place. I tried experimenting with toggling ripple on and off, but nothing would work. So I had a little swear at my computer - it doesn't mind, it's used to it - and decided to email you good people in the hope that someone might be able to help with this irksome little problem.
>>>>>>>>>>>>> 
>>>>>>>>>>>>> Thanks.
>>>>>>>>>>>>> 
>>>>>>>>>>>>> Sent from my iPhone
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