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Audio Phaser

Apply a phaser effect

Adds moving phase-shifted notches for a sweeping, spacey tone using the ffmpeg aphaser filter.

Click to upload file or drag and drop file here

Maximum file size: 200MB Supported formats: audio/*

Key Facts

Category
Media
Input Types
file, number, select
Output Type
file
Sample Coverage
4
API Ready
Yes

Overview

The Audio Phaser tool applies a classic phaser effect to your audio files, creating sweeping, spacey tones by modulating phase-shifted notches. It uses the ffmpeg aphaser filter for high-quality processing.

When to Use

  • •When adding psychedelic or swirling effects to guitar or synth tracks in music production.
  • •To enhance vocals with a modulated, ethereal quality for podcasts or songs.
  • •For sound design in film or games to create dynamic, atmospheric audio textures.

How It Works

  • •Upload an audio file in a supported format like MP3, WAV, or AAC.
  • •Adjust parameters such as input gain, output gain, delay, decay, speed, and phase type (Triangle or Sine).
  • •Select the desired output format from options including MP3, WAV, FLAC, and more.
  • •Process the file to apply the phaser effect and download the result.

Use Cases

Enhancing guitar solos in rock music with a classic phaser sweep for added depth.
Processing vocal tracks to create dreamy, atmospheric effects in electronic music.
Generating unique sound effects for video games or film scores to build immersive audio.

Examples

1. Guitar Solo Enhancement

Music Producer
Background
A producer is working on a rock track and wants to add movement to a static guitar solo.
Problem
The solo sounds flat and lacks the dynamic, swirling quality needed for the mix.
How to Use
Upload the guitar solo audio file, set speed to 0.5 Hz for a slow sweep, select Sine phase type, and output as WAV.
Example Config
{"inGain": 0.4, "outGain": 0.74, "delayMs": 3, "decay": 0.4, "speedHz": 0.5, "type": "s", "outputFormat": "wav"}
Outcome
The processed solo has a rich, spacey effect that adds expressiveness and fits seamlessly into the track.

2. Vocal Modulation for Film Score

Sound Designer
Background
A sound designer is creating an eerie atmosphere for a horror film scene using vocal samples.
Problem
The vocals need to sound distorted and otherworldly to enhance the scene's tension.
How to Use
Upload the vocal audio, increase decay to 0.8 for a longer trail, set speed to 1 Hz for faster modulation, choose Triangle phase type, and output in AAC format.
Example Config
{"decay": 0.8, "speedHz": 1, "type": "t", "outputFormat": "aac"}
Outcome
The vocals are transformed into a haunting, modulated sound that perfectly complements the cinematic soundscape.

Try with Samples

audio, file
Copyright-Free AAC Audio Samples
High-quality AAC encoded audio samples for testing and development, featuring nature sounds and meditation music with excellent compression
title token audio
audio
Copyright-Free MP3 Audio Samples
Collection of royalty-free audio samples for testing and development purposes including nature sounds, meditation music, and ambient audio
title token audio
audio
Copyright-Free WAV Audio Samples
Uncompressed PCM WAV audio samples for testing and development, mirrored from MP3 set with nature sounds and meditation music
title token audio
audio
Copyright-Free OGG Vorbis Audio Samples
Open-source OGG Vorbis audio samples for testing and development, featuring excellent compression with nature sounds and meditation music
title token audio
audio

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FAQ

What audio formats are supported for input?

The tool accepts common audio formats including MP3, WAV, AAC, M4A, OGG, Opus, and FLAC.

How can I control the intensity of the phaser effect?

You can adjust input gain, output gain, delay, decay, speed, and choose between Triangle or Sine phase types.

Is there a file size limit for uploads?

Yes, the audio file must be under 200 MB.

Can I process multiple audio files simultaneously?

No, the tool processes one audio file at a time per operation.

What is the default output format?

The default output format is MP3, but you can select from various options like WAV, AAC, or FLAC.

API Documentation

Request Endpoint

POST /en/api/tools/audio-phaser

Request Parameters

Parameter Name Type Required Description
audioFile file (Upload required) Yes -
inGain number No -
outGain number No -
delayMs number No -
decay number No -
speedHz number No -
type select No -
outputFormat select No -

File type parameters need to be uploaded first via POST /upload/audio-phaser to get filePath, then pass filePath to the corresponding file field.

Response Format

{
  "filePath": "/public/processing/randomid.ext",
  "fileName": "output.ext",
  "contentType": "application/octet-stream",
  "size": 1024,
  "metadata": {
    "key": "value"
  },
  "error": "Error message (optional)",
  "message": "Notification message (optional)"
}
File: File

AI MCP Documentation

Add this tool to your MCP server configuration: 

{
  "mcpServers": {
    "elysiatools-audio-phaser": {
      "name": "audio-phaser",
      "description": "Apply a phaser effect",
      "baseUrl": "https://elysiatools.com/mcp/sse?toolId=audio-phaser",
      "command": "",
      "args": [],
      "env": {},
      "isActive": true,
      "type": "sse"
    }
  }
}

You can chain multiple tools, e.g.: `https://elysiatools.com/mcp/sse?toolId=png-to-webp,jpg-to-webp,gif-to-webp`, max 20 tools.

Supports URL file links or Base64 encoding for file parameters.

If you encounter any issues, please contact us at [email protected]