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Audio Spectrogram Generator

Generate a spectrogram image from an audio file

Creates a PNG spectrogram with ffmpeg showspectrumpic to visualize frequency content over time.

Click to upload file or drag and drop file here

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

Key Facts

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

Overview

The Audio Spectrogram Generator creates a visual representation of an audio file's frequency content over time. Using ffmpeg's showspectrumpic, it produces a PNG image that helps analyze sound patterns for various applications.

When to Use

  • •When you need to visualize the frequency spectrum of an audio recording for analysis or debugging.
  • •For creating visual aids in music production, audio engineering, or educational demonstrations.
  • •To inspect audio files for anomalies or specific frequency patterns in research or quality control.

How It Works

  • •Upload an audio file in a supported format such as MP3, WAV, or FLAC.
  • •Optionally configure image dimensions, color scheme, and legend display using the provided settings.
  • •The tool processes the audio with ffmpeg's showspectrumpic to generate a spectrogram PNG.
  • •Download the resulting image file for further use or sharing.

Use Cases

Analyzing audio recordings for frequency patterns in scientific research or wildlife studies.
Creating visual representations for music production, such as checking mix balance or identifying issues.
Educational purposes to demonstrate how sound is represented in frequency domains for students or presentations.

Examples

1. Music Mix Frequency Check

Audio Engineer
Background
An audio engineer is finalizing a music mix and needs to verify the frequency balance across tracks.
Problem
Identify if bass frequencies are overpowering or if treble is lacking in the mix.
How to Use
Upload the mix audio file, set colorScheme to 'plasma' for clear contrast, and enable showLegend to reference frequency levels.
Example Config
width=1600, height=600, colorScheme=plasma, showLegend=true
Outcome
A detailed spectrogram PNG that highlights frequency distribution, allowing for precise adjustments in the mix.

2. Bird Call Analysis

Wildlife Biologist
Background
A biologist has recorded bird calls in a forest and wants to analyze their frequency characteristics for species identification.
Problem
Distinguish between different bird species based on unique frequency patterns in their calls.
How to Use
Upload the audio recording, adjust height to 1000 for finer detail, and use 'cool' color scheme to emphasize lower frequencies.
Example Config
height=1000, colorScheme=cool
Outcome
A clear spectrogram showing distinct frequency bands for each bird call, aiding in accurate species identification.

Try with Samples

image, 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?

The tool supports any audio format compatible with ffmpeg, including MP3, WAV, FLAC, and more.

Can I customize the spectrogram's appearance?

Yes, you can set the image width and height, choose from color schemes like magma or viridis, and toggle the legend.

What is the default image size?

The default width is 1200 pixels and height is 500 pixels.

Is there a file size limit?

Yes, the audio file must be under 200 MB.

What output format is generated?

The tool produces a PNG image file.

API Documentation

Request Endpoint

POST /en/api/tools/audio-spectrogram-generator

Request Parameters

Parameter Name Type Required Description
audioFile file (Upload required) Yes -
width text No -
height text No -
colorScheme select No -
showLegend checkbox No -

File type parameters need to be uploaded first via POST /upload/audio-spectrogram-generator 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-spectrogram-generator": {
      "name": "audio-spectrogram-generator",
      "description": "Generate a spectrogram image from an audio file",
      "baseUrl": "https://elysiatools.com/mcp/sse?toolId=audio-spectrogram-generator",
      "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]