Sample editing, lost my way

I never got the hang of editing samples on the 301, and think I need some pointers. Where can I read about the sample editing possibilities on the 301? Including what edits are possible where and which button combos to use. Sorry if this is stupid and documented to death, but I’m lost…

I’m currently floating round firmware 0.4.2x…


ya know, i’m pretty new to the ER-301 but i feel exactly the same. probably haven’t done enough digging in the forums/reading around the wiki but i’d love a nice concise answer to this as well.

I’m not sure there’s any documentation in the wiki about this yet. I go through some examples in these tutorials:

Probably the main thing that would be confusing is that some of the operations expect you to have part of the waveform selected before you can perform the operation. So place the cursor at the start or end point, hold down shift and then move the cursor to make a selection, which will be highlighted brighter than the rest of the waveform. Maybe that will help as a starting point?


Thanks, Joe, that looks very helpful!

  1. When do I know if an operation is destructive?

  2. Is there a way to copy the original sample when doing destructive edits, either before or as a part of the edit operation?

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They are all destructive: trim, cut, normalize, silence, fade in, fade out, and remove DC. They’re destructive in the sense that they actually modify the waveform. There’s no single undo. There is a revert option that undoes everything you’ve done at once and restores it back to the original buffer state.

These operations are just affecting the buffer in RAM, and not being auto-committed to disk. So when you’re finished you can just do a save as from the file operations further down in the menu if you want to make a new file with your changes, while preserving the original. Possibly you can do a save as before you start editing if you want to make an identical copy of the original.

I’d recommend experimenting on some throw-away wave file, just to get comfortable with the workflow.


Thanks, that makes sense!

So actually I could just have the edits only live in quick saves…

Got it, thanks @joe!

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can someone walk me through the steps in v.0.4.27 to save a normalized file? I had a buffer from my sample lib folder which I loaded into manual loops, then I found that the file did not get loaded properly when I booted back up. The buffer that is now associated with the manual loops module is blank.

I am able to relink the buffer from the previous file without issues (settings intact), but it’s not normalized as I would expect.

EDIT: nevermind, I figured it out.

  1. select manual loops
  2. press config
  3. select edit buffer
  4. select menu
  5. scroll to normalize and press enter
  6. select yes
  7. select menu
  8. scroll down to file operations and select save
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I think it’s worth mention here that a file operation doesn’t have to be destructive, since you can always select save as...

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Agreed. Excellent, sounds like you’ve mastered it!

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Hi folks. My first post and a recent convert to the 301 here in Ireland.

I too appear to be trying to find my way with sample editing (I’m not lost though as I’ve not yet achieved a state of unlostness!).

I’m using V0.6. The documentation for creating a slice for earlier versions appear to require nothing more than entering a start and end loop point. However it seems that the additional step of creating two slices is required for this… correct?

More importantly, though I appear to have created a loop, I’m not able to get it to play back.
I have ‘loop on gate hi’ selected but this simply loops the entire sample rather than the loop itself.
If I select Play Duration/repeat and Play Extent/Slice and can indeed get the Variable Speed Player to play back the looped segment. However the behaviour I am looking for is of course for a sample to play back from the start and then loop when it reaches the chosen segment.
Any ideas what I’m missing here?


loop points and slice are two different things.
insert a varispeed sample player and load a sample. click on sampler’s header and press “edit buffer”.
now scroll with the encoder and place slices where you want by pressing the soft button beneath “+ slice”. if you need to remove slices, scroll in the area before the slice you want to erase and press soft button beneath “- slice”.
when finished set play extent to slice.

loop points are a different thing, first place your loop points, then “play duration” = loop on gate high and play extent = slice.
you need to have at least one slice (place one at the beginning of the sample)


Thanks @hyena! I spent the evening struggling to make this work and then suddenly it came together. Not sure why it wasn’t clicking before.

Any idea what the diamond shape that appears on some of the slice markers is by the way?

That’s when the Loop In (right-pointing triangle) and Loop Out (left-pointing triangle) are in the same place (2 triangles make a diamond).

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