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Sample Editor

Create and edit multisamples for EP-40 Riddim

Overview

This is where multisamples come together. The EP-40 supports 5 different playback modes and up to 8 zones per multisample. The official tool doesn't let you create these at all.

Drag in your samples, map them across the keyboard, tweak the ADSR and other parameters, then send it to your device. That's it.

Editor Modes

Choose from 5 different playback modes depending on your needs:

Single

One-shot playback of a single sample. Perfect for drum hits, sound effects and samples that play once without looping.

Use for: Kicks, snares, percussion, FX

Loop

Continuous looping playback of a single sample. Ideal for sustained sounds and textures.

Use for: Pads, drones, atmospheric textures

Pitched

Single sample mapped across the keyboard with pitch shifting. Create melodic instruments from a single recording.

Use for: Bass lines, lead melodies, simple instruments

Multi (Multisample)

Multiple samples (2-8) mapped to keyboard zones for melodic instruments. Each zone can have its own root note and key range.

Use for: Realistic instruments, chromatic synths, complex melodic patches

Kit

Multiple samples (2-8) mapped to individual keys for drum kits. Each pad triggers a different sample.

Use for: Drum kits, percussion sets, sound collections

Loading Samples

Adding audio files to your multisample:

  1. Click the "Add Samples" button in the top right
  2. Select one or more audio files from your computer (WAV, MP3, FLAC, AIFF, OGG and more)
  3. Samples will appear in the drop zone area
  4. Drag and drop samples to reorder them if needed

Sample Limits

Maximum 8 samples per multisample, with a total duration limit of 20 seconds across all samples. The app will warn you if you exceed these limits.

Keyboard & Zone Mapping

The virtual keyboard shows how your samples are mapped across the EP-40's pads:

  • C3=60 / C4=60 toggle: Switch between octave numbering conventions
  • Zone indicators: Visual markers show the range of each sample zone
  • Root note: Indicates the original pitch of each sample
  • Click to play: Click any key to preview the sound

Sound Parameters

Control sound shaping for your entire multisample or individual zones:

Amplitude Controls

  • Volume: Overall loudness
  • Pan: Stereo positioning (left/center/right)
  • Velocity: Response to pad hit intensity

Envelope (ADSR)

  • Attack: Fade-in time
  • Decay: Time to reach sustain level
  • Sustain: Held volume level
  • Release: Fade-out time when released

Pitch & Tuning

  • Pitch: Coarse tuning in semitones
  • Fine tune: Precise tuning in cents
  • Root note: Base pitch for each zone

Advanced Audio Editing

Click on any loaded sample to access advanced editing tools:

Waveform Editor

  • Visual waveform display
  • Trim sample start and end points
  • Set loop points with automatic detection
  • Zoom and navigate the waveform

Processing Tools

  • Normalise: Maximise volume without clipping
  • Fade in/out: Smooth transitions
  • Reverse: Play sample backwards
  • Time stretch: Change duration without affecting pitch
  • Pitch shift: Change pitch without affecting tempo

Dynamics & EQ

  • Compressor: Control dynamic range
  • Gate: Remove low-level noise
  • Limiter: Prevent clipping
  • EQ: Shape frequency content

Auto Tools

  • Transient detection: Automatically detect note starts
  • Auto-chop: Slice samples at transients

Importing OP-1 Drum Kits

EP-PatchStudio can import drum kits from the Teenage Engineering OP-1:

  1. Select "Kit" mode in the Editor Mode selector
  2. Click "Add Samples"
  3. Select an OP-1 .aif drum kit file
  4. The kit will be automatically split into individual samples
  5. Adjust parameters and save to your EP-40

Saving & Exporting

Saving your multisample:

  1. Click the "Save to Device" button (requires connected EP-40)
  2. Choose a project slot (1-8) on your device
  3. The multisample will be transferred to your EP-40 Riddim
  4. You can now access it from the device

Exporting for backup:

You can also export multisamples as project files to save and share your work. Use the File menu to save or load .epps project files.

Tips & Best Practices

  • Normalise samples first: Ensures consistent volume across zones
  • Use loop mode for pads: Creates sustained sounds from short samples
  • Set appropriate root notes: Ensures accurate pitch tracking in Multi mode
  • Watch the total duration: Stay under 20 seconds to fit all samples
  • Test velocity response: Preview how samples respond to different hit strengths
  • Use envelope for shaping: Attack and release can dramatically change the character

Ready to create multisamples in minutes?

Drag, drop, send. Free trial available with full features.

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