Adding slicepoints to loops? Batch?

Discussion in 'Working with Sound' started by 909Problems, Jul 12, 2025.

  1. 909Problems

    909Problems Noisemaker

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    Hi there,

    i have some loops which don‘t have slicepoints
    integrated. When i use FL Slicer or Slicex i have to slice them there. Is there a way to batch process folders to add these points automatically or is this a manual job?

    Thankyou.
     
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  3. PulseWave

    PulseWave Audiosexual

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    Hi! Great question — adding slice points (a.k.a. transient markers) automatically to loops can save a lot of time, especially if you’re working with large sample libraries. Here's how you can approach batch slicing depending on your tools:

    Automatic Batch Slicing (with Tools)
    There are tools that can detect transients and apply slice points automatically in batch, which can then be imported into FL Studio Slicer/Slicex with those markers.

    1. Audio Editing Software with Batch Processing
    • Audacity (free, with scripting options)

    • Adobe Audition

    • iZotope RX (premium, powerful batch processing)

    • Wavelab (good for loop libraries)
    Workflow (example using iZotope RX or similar):

    1. Use a transient detector to automatically mark slice points.

    2. Export markers as part of the audio file (typically embedded in WAV metadata or saved as a .cue or .txt file).

    3. Load the file into FL Slicer or Slicex — they will detect embedded markers.
    2. Dedicated Slicing Tools
    Some tools are built specifically for batch slicing:

    • ReCycle by Propellerhead: Slices audio based on transients, saves as .REX files (Slicex supports .REX).

    • [Loop Slicer Max4Live (Ableton)], if you're in Ableton world.

    • Sononym: A smart sample browser with transient detection.
    Using FL Studio Native Tools
    FL Studio itself doesn’t support batch slicing with slice points natively, so you'd have to:

    1. Use Edison to detect transients (Tools > Regions > Detect transients).

    2. Manually save sliced samples with markers (slow for batches).

    3. Alternatively, use Slicex’s auto-slice feature when loading samples:
      • It can detect transients and place slice points automatically based on energy thresholds (right-click the slicing method in Slicex).
    Batch Workaround (Semi-Automated)
    If you’re comfortable with scripting:

    • Use Python + pydub or librosa to analyze audio and detect transients.

    • Export cue points or generate .wav files with slice markers in BWF metadata.
    TL;DR — Summary
    Option Batch Capable? Recommended Use
    Slicex (Auto Slice)
    ❌ (one at a time) Simple, FL-native
    ReCycle ✅ Best for .REX slicing
    iZotope RX ✅ Pro-level batch transient detection
    Audacity (w/ scripting) ⚠️ Free workaround
    Custom Python Script ✅ Advanced users only
    If you tell me what OS and tools you already use (or are willing to try), I can recommend the most efficient workflow for you!
     
  4. Usr4321

    Usr4321 Kapellmeister

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    Reaper. Its Free. It slices. It dices. It batches. And has most all the tools you'd want for common processing jobs. Plenty of how tos or forum posts about for any batch process it does. Transients, grids, markers, scripts. Choose your own adventure.
     
  5. wrbKonst

    wrbKonst Newbie

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    Reaper is not free lol. Its crazy people actually stare at that ridiculous hideous program all day because "its free". I heard the next version is going to require the actual license to use it instead of the unlimited trial gimmick it currently has . lol
     
  6. PulseWave

    PulseWave Audiosexual

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    ReCycle finds all the transients in your sampled material and slices your loop up, while also keeping the timing information so you can play it back at any tempo without losing its feel or with the artifacts that come from time stretch.

    ReCycle - Now Free --> www.reasonstudios.com/recycle

     
  7. Usr4321

    Usr4321 Kapellmeister

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    Unless it takes them longer than 60 days, 23 hours, 59 minutes and 59 seconds to do a batch it's free as explicitly prescribed by the license. Doesn't matter if its commercial use in that 60 day period. Maybe it's 59. I don't know if it's inclusive or exclusive or starting by day 0.xx or 1.00.

    You don't understand how the license works. There is no upfront requirement but it isn't perpetual for future upgrades.

    A current license gives you update access until 8.99. Reaper licenses are good for 2 major incremental updates. That takes nearly a decade. You have to buy a new license at 9.00. I am quite sure you did not hear an announcement of licensing change 5 years before 9.0 is likely to come out.

    $225 for a commercial license is good value for what you're getting. $60 for the majority of users is stupidly good value for what you're getting.
    The GUI is fully customizable. Hundreds of free themes exist. It takes 10 seconds to beautify it.

    I don't use Reaper. This is commonly known stuff.
     
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