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Audio Phase Fix

Fix phase and stereo width issues

Adjusts stereo width and phase alignment using FFmpeg stereo tools.

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 Phase Fix tool corrects phase alignment and adjusts stereo width in audio files using FFmpeg's stereo tools. It helps improve audio clarity and spatial effects by allowing precise control over phase shift and stereo expansion.

When to Use

  • •When audio recordings suffer from phase cancellation, resulting in a thin or hollow sound.
  • •To expand or narrow the stereo width for a more immersive or focused audio experience.
  • •When aligning phase between multiple audio tracks during mixing or post-production.

How It Works

  • •Upload an audio file in a supported format such as MP3, WAV, or FLAC.
  • •Adjust the stereo width parameter from 0 (mono) to 2 (expanded stereo) to control the spatial spread.
  • •Set the phase shift in degrees to correct timing issues between left and right channels.
  • •Select an output format and process the file to download the phase-corrected audio.

Use Cases

Podcast production to fix phase issues from multi-microphone setups.
Music mixing to enhance stereo imaging and spatial effects.
Audio restoration for correcting phase problems in vintage recordings.

Examples

1. Correcting Phase in a Dual-Microphone Podcast

Podcast Editor
Background
A podcast episode recorded with two microphones has phase misalignment, causing voices to sound thin and distant.
Problem
Phase cancellation between channels reduces audio quality and listener engagement.
How to Use
Upload the podcast audio file, set phase shift to 45 degrees to align channels, and keep stereo width at 1 for a natural sound.
Outcome
The audio now has fuller voices and improved clarity, eliminating phase-related artifacts.

2. Widening Stereo Image in Music Tracks

Background
A stereo music track feels narrow and lacks depth, making it less immersive.
Problem
The centered stereo image doesn't provide the desired spatial experience.
How to Use
Upload the music file, increase stereo width to 1.5 for a broader sound, and set phase shift to 0 to maintain proper alignment.
Outcome
The track gains a wider stereo field, enhancing the listening experience with greater spatial depth.

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 does phase shift do in audio processing?

Phase shift adjusts the timing offset between the left and right audio channels to correct phase cancellation, which can improve sound clarity and fullness.

What audio file formats can I upload?

You can upload audio files in common formats like MP3, AAC, M4A, OGG, Opus, FLAC, and WAV.

Can I convert stereo audio to mono with this tool?

Yes, by setting the stereo width to 0, you can effectively convert stereo audio to mono.

Is there a limit on the audio file size?

Yes, the audio file must be under 200 MB to be processed.

How does adjusting stereo width affect the audio?

Stereo width controls the perceived space between channels; values above 1 widen the stereo image, while values below 1 narrow it towards mono.

API Documentation

Request Endpoint

POST /en/api/tools/audio-phase-fix

Request Parameters

Parameter Name Type Required Description
audioFile file (Upload required) Yes -
stereoWidth number No -
phaseShift number No -
outputFormat select No -

File type parameters need to be uploaded first via POST /upload/audio-phase-fix 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-phase-fix": {
      "name": "audio-phase-fix",
      "description": "Fix phase and stereo width issues",
      "baseUrl": "https://elysiatools.com/mcp/sse?toolId=audio-phase-fix",
      "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]