Chapter 3

Chop and Shape Your Sample

SMPLR

Navigate to the SMPLR screen. This is the heart of the app — where raw audio becomes an instrument.

You'll see three zones: the spinning reel and waveform at the top, the 16 pads (per bank) in the middle, and the mixer faders at the bottom. The sampler has 64 pads across 4 banks (A, B, C, D). You see 16 at a time — tap the bank chips to switch. That's 64 sounds ready to play. Pad 1 has an orange dot — that means your captured audio is loaded there.

SMPLR
ABCD
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CHOP FX MIX
The reel and the waveform

Think of the reel like a tape spool. The waveform beside it shows what your sample looks like — peaks are loud parts, valleys are quiet parts. The display above the pads cycles through three views — tap to switch between a spinning reel with waveform, a vintage bar meter, and a clean view with just the pads. The 16 pads per bank below are your instruments. Each one can hold a different sound or a slice of your sample.

EDIT mode: Tap the edit pads pill in the header to switch between NORMAL mode (play pads) and EDIT mode (tap empty pads to assign sounds, long-press loaded pads to edit them).

Preview and loop a section

Your captured audio is probably longer than you need. You want to isolate the best part.

  1. Tap Pad 1 to hear your full recording play back.
  2. Watch the reel spin and the waveform scroll past. Listen for the section you want — a melodic phrase, a chord progression, a distinctive sound.
  3. On the waveform, drag the left handle to set the IN point — where your loop starts.
  4. Drag the right handle to set the OUT point — where it ends.
  5. Enable loop mode. Now only your selected section plays, repeating.
Aim for a section with a clear melody or a strong chord. 2–4 bars is ideal for a first track. You can scrub the reel by dragging it to move through different parts of the audio quickly.

Particle drag — load a loop onto a pad

Now that you've isolated a section, you want to put it on its own pad so you can work with it independently.

Particle drag

Particle drag is a gesture — you hold the reel until glowing particles appear, then drag them onto an empty pad. It feels like peeling sound off the tape. The section between your IN and OUT points is what gets transferred.

  1. Make sure your IN/OUT points are set around the phrase you want.
  2. Touch and hold the reel. Glowing particles appear around it.
  3. Without lifting your finger, drag downward toward any empty pad.
  4. Release. Your loop drops onto that pad. It now has an orange dot.
  5. Tap the new pad to hear just your isolated phrase.

Auto-Chop

A loop playing on one pad is useful, but chopping it up is where things get interesting. Chopping splits a sample into individual slices — each on its own pad — so you can rearrange, retrigger, and rebuild.

  1. Select the pad holding your loop (tap it so it's highlighted).
  2. Tap the CHOP button in the toolbar.
  3. ESSNCE scans for transients — the sharp spikes where sounds start — and splits the audio across empty pads automatically.
  4. Each pad now holds one slice. Tap them in sequence — you're hearing your original sample taken apart.
  5. Try tapping them in a different order. You've just rearranged the original.
If you got too many thin slices, raise the sensitivity threshold — it'll detect fewer transients and create thicker chunks. Too few slices? Lower it. Getting the right chop size takes a couple of tries. That's normal.
CHOP — sensitivity 45%
CANCEL CHOP → 7 PADS

Shape your sound

Your chops are raw — they might be harsh, or ring into each other, or just need some warmth. The per-pad sound designer handles this.

Long-press any loaded pad to open it. For a first track, focus on three things:

  1. Filter: Set the type to LP (low-pass) and sweep the cutoff down. This removes harsh high frequencies and makes the sample sound warmer. The further down you go, the more muffled it gets. Find the point where it sounds smooth but not buried.
  2. Release: In the ADSR section, shorten the release to around 100ms. This makes each slice cut off cleanly instead of ringing into the next one.
  3. Play Mode: ONE SHOT plays the full sample with one tap. GATE plays only while you hold the pad. SUSTAIN holds the note for as long as you hold the pad (great for long drones and pads). LOOP repeats the sample until you release. For longer melodic phrases where you want to control the length, try GATE or SUSTAIN.
Don't go deep into sound design on your first track. A low-pass filter and a tighter release are the two moves that make the biggest difference. You can always come back.
CHRM button: The CHRM button maps one sound across all 16 pads, each at a different pitch — turn a single vocal chop into a playable melody.
→ Full parameter reference: How to Use — Pad Sound Designer

Instrument mode

For melodic playing, tap the +INSTR button to turn any pad into an instrument. Set a key range, load a synth voice, and play it like a keyboard. You can export instruments as Decent Sampler or SFZ files.

Mixer balance

The six faders at the bottom of the SMPLR screen control the volume of pad groups. If your sample loop feels too loud (and it probably will once you add drums), pull its fader down a bit. You'll come back to this after the drums are in.

Kit manager: Tap the kit name in the header to open the kit manager. Your pads, samples, and settings are saved as a Kit. Kits save as .ekit files that you can share, back up, or switch between instantly.
Done

You have a chopped sample with 4–8 slices spread across your pads. Each slice plays cleanly, filtered to taste. You have an instrument built from a piece of borrowed audio.

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