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Audio Set Speed

Set audio playback speed without changing pitch

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 Set Speed tool adjusts the playback speed of audio files without altering the pitch, allowing you to speed up or slow down content for efficient listening or editing.

When to Use

  • •When you need to listen to audio faster to save time, such as with podcasts or audiobooks.
  • •When slowing down audio for better comprehension, like in language learning or detailed review.
  • •When adjusting audio speed for synchronization in editing or production workflows.

How It Works

  • •Upload your audio file in a supported format like MP3, WAV, or AAC.
  • •Set the speed factor between 0.25x and 4x using the slider or input field.
  • •Select the desired output format from options including MP3, AAC, M4A, OGG, Opus, FLAC, or WAV.
  • •Process the file to generate a new audio file with the adjusted speed.

Use Cases

Speeding up educational lectures or tutorials to cover material more quickly.
Slowing down interview recordings for accurate transcription or analysis.
Adjusting audio tempo for music practice or creative projects.

Examples

1. Speed Up a Podcast for Commute

Background
A commuter has a 60-minute podcast episode but only 40 minutes during their train ride.
Problem
The episode is too long to finish in the available time.
How to Use
Upload the podcast MP3 file, set the speed factor to 1.5x, and choose MP3 as the output format.
Outcome
The podcast plays 50% faster without distortion, allowing the user to listen to the entire episode during the commute.

2. Slow Down a Language Lesson

Language Learner
Background
A student is practicing listening skills with a fast-paced audio lesson in Spanish.
Problem
The native speaker's pace is too quick for clear comprehension.
How to Use
Upload the lesson audio, set the speed factor to 0.75x, and export as WAV for high quality.
Example Config
speedFactor: 0.75, outputFormat: wav
Outcome
The audio plays slower, making it easier to understand words and improve pronunciation.

Try with Samples

audio, file
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 FLAC Audio Samples
Lossless FLAC audio samples for testing and development, mirrored from MP3 set with nature sounds and meditation music
title token audio
audio
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

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FAQ

What audio formats can I upload?

You can upload common audio formats such as MP3, WAV, AAC, and others supported by the tool.

Does changing speed affect the pitch?

No, the tool adjusts speed without changing the pitch, preserving the original tone.

What is the minimum and maximum speed factor?

The speed factor ranges from 0.25x (slower) to 4x (faster).

Is there a file size limit?

Yes, audio files must be under 200 MB.

Can I choose the output format?

Yes, you can select from formats like MP3, AAC, M4A, OGG, Opus, FLAC, or WAV.

API Documentation

Request Endpoint

POST /en/api/tools/audio-set-speed

Request Parameters

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

File type parameters need to be uploaded first via POST /upload/audio-set-speed 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-set-speed": {
      "name": "audio-set-speed",
      "description": "Set audio playback speed without changing pitch",
      "baseUrl": "https://elysiatools.com/mcp/sse?toolId=audio-set-speed",
      "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]