KUPEPO II

HOW TO USE GUIDE
KUPEPO2_GUIDE.TXT
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What is KUPEPO II?

KUPEPO II is a node-based voice changer tool. Freely place and connect effect nodes to build your own original voice effect chains.

While the original KUPEPO was limited to preset selection plus up to 2 combinations, KUPEPO II has no limit on the number of effects. Each effect parameter can be individually adjusted.

Basic Usage

  1. Load Audio
    Click the "Load File" button at the bottom or drag & drop a file into the browser. Supports audio and video files. Record from microphone with the "Record" button.
  2. Add Effect Nodes
    Click the effect button you want from the toolbar at the top. A node card will be added to the canvas.
  3. Connect Nodes
    🎤 INPUT Drag from the output port (small circle) on the right side to the input port on the left side of an effect node. Similarly connect from effect output to next input, finally to 🔊 OUTPUT .
  4. Adjust Parameters
    Move the sliders within each effect node to adjust effect strength and characteristics.
  5. Execute Conversion
    Press the "Process" button in the bottom bar. Audio is processed in order: INPUT, effects, OUTPUT.
  6. Play & Save
    After conversion, check results with the play button. Download with "Save MP3" or "Save WAV."
Tip
Double-click a wire to delete the connection. Delete nodes with the X button on the top right. INPUT and OUTPUT nodes cannot be deleted.

Smartphone Controls

KUPEPO II is also compatible with smartphones. Some controls differ from the PC version.

  1. Connecting Nodes (Two-Tap Method)
    Tap the output port (purple circle) of the source node to enter connection mode, and the target input ports will glow. Then tap the input port (cyan circle) of the destination node to complete the connection. Tap empty canvas to cancel.
  2. Adding Effects
    The toolbar supports horizontal scrolling. Swipe left/right and tap the effect button you want.
  3. Moving Nodes
    Long press and drag the header area at the top of a node to move it.
  4. Deleting Wires
    Double-tap the wire you want to delete to disconnect.
  5. Adjusting Parameters
    Swipe left/right on sliders within each effect node to change values.
Tips for Smartphone
Ports have a wider tap area than they appear, so approximate taps work fine. If nodes overlap and are hard to operate, drag headers to rearrange them.

Effect Node List

🎵Pitch
Change pitch in semitones (-12 to +12). Fine-tune voice pitch.
⏩Speed
Change playback speed (0.25x-2.0x). Pitch changes with speed.
🔄Reverse
Reverse playback. A simple effect with no parameters.
🔥Distortion
Add distortion. Higher amounts produce rougher sound.
🏛Reverb
Reverberation. Adjustable delay, feedback, and mix.
📉Low Pass
Cut high frequencies. Adjust with frequency and Q. Creates muffled sound.
📈High Pass
Cut low frequencies. Adjust with frequency and Q. Creates lighter sound.
💫Echo
Multiple echo effect. Set delay, feedback, and mix.
🤖Robot
Generate metallic robot voice with ring modulation.
🦊Gibberish
Fragment audio with random pitch. Game-style voice.
👽Cosmic
Frequency modulation + reverb for cosmic audio.
🌀Shuffle
Randomly rearrange audio segments. Different result each time.
👹Demon
Terrifying voice with drastically lowered pitch, distortion and reverb. Each element adjustable.
🎈Helium
Squeaky high voice like inhaling helium. Adjustable pitch ratio.
🫧Submerge
Muffled underwater sound. Adjustable cutoff and reverb depth.
🎭Possess
Eerie possessed voice with pitch wobble and phase shift. Adjustable wobble.
📡Interference
Intermittent interruptions like radio interference. Adjust gate frequency and noise.

Connection Examples

Try building chains like these:

🎤 INPUT → 🔄 Reverse → 🏛 Reverb → 🔊 OUTPUT
Reversed audio with deep reverb creates a mystical voice.
🎤 INPUT → 🎵 Pitch(-5st) → 🔥 Distortion(8x) → 🏛 Reverb → 🔊 OUTPUT
Lowered pitch with distortion and spatial reverb for a demon voice.
🎤 INPUT → 🦊 Gibberish → 💫 Echo → 📉 Low Pass(600Hz) → 🔊 OUTPUT
Game-style voice with echo and low pass for a fantasy sound.

Privacy-Conscious Design

KUPEPO II performs all audio processing in your browser (locally). Uploaded files are never sent to or stored on external servers.

Simple version available
If node operation feels difficult, the preset-based KUPEPO (simple version) is also available.