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Audio True Peak Meter

Analyze audio to find true peak level

Uses FFmpeg loudnorm analysis to report true peak and headroom for clipping safety checks.

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
Output Type
json
Sample Coverage
4
API Ready
Yes

Overview

The Audio True Peak Meter analyzes audio files to measure true peak levels using FFmpeg's loudnorm analysis, helping prevent clipping and ensure loudness safety for broadcast, streaming, and mastering workflows.

When to Use

  • •When preparing audio for broadcast or streaming to comply with loudness standards like EBU R128.
  • •During music mastering to check for inter-sample peaks that could cause distortion on playback.
  • •When verifying audio files meet platform-specific true peak limits before distribution.

How It Works

  • •Upload an audio file in a supported format such as MP3, WAV, or FLAC.
  • •Optionally set a true peak ceiling in dBTP to define a safety threshold.
  • •The tool runs FFmpeg loudnorm analysis to compute the true peak level and available headroom.
  • •Results are provided in JSON format, detailing the true peak value and clipping margin.

Use Cases

Audio mastering engineers checking tracks for true peak compliance before digital release.
Podcast producers ensuring episodes meet loudness guidelines for platforms like Spotify or Apple Podcasts.
Broadcast technicians verifying audio files adhere to true peak limits for transmission standards.

Examples

1. Mastering Track True Peak Check

Background
A music producer is finalizing a track for streaming services and needs to ensure no clipping occurs on consumer devices.
Problem
The mastered track might have hidden inter-sample peaks that exceed safe levels, risking distortion.
How to Use
Upload the WAV file to the Audio True Peak Meter without changing the default ceiling.
Outcome
The tool reports a true peak of -0.8 dBTP, confirming adequate headroom, and the track is approved for distribution.

2. Podcast Episode Compliance

Podcast Editor
Background
A podcast editor is preparing an episode for upload and must meet the platform's true peak requirement of -1 dBTP.
Problem
The episode audio could have peaks above the limit, leading to rejection or poor audio quality.
How to Use
Upload the MP3 file and set the ceilingDb to -1 dBTP in the options.
Example Config
ceilingDb: -1
Outcome
Analysis shows a true peak of -1.3 dBTP, within limits, and the episode is ready for publishing.

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 is true peak?

True peak is the maximum reconstructed audio level in dBTP, accounting for inter-sample peaks that can cause clipping during digital-to-analog conversion.

How accurate is the true peak measurement?

The tool uses FFmpeg's loudnorm filter, which provides reliable true peak analysis based on standard audio processing algorithms.

What audio formats are supported?

Common formats like MP3, WAV, FLAC, and others compatible with FFmpeg are supported for analysis.

Can I process multiple files simultaneously?

No, the tool analyzes one audio file at a time. For batch processing, run separate analyses for each file.

What does the True Peak Ceiling option do?

The ceilingDb option sets a target true peak level in dBTP. The analysis reports headroom below this ceiling to help avoid clipping.

API Documentation

Request Endpoint

POST /en/api/tools/audio-true-peak-meter

Request Parameters

Parameter Name Type Required Description
audioFile file (Upload required) Yes -
ceilingDb number No -

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

Response Format

{
  "key": {...},
  "metadata": {
    "key": "value"
  },
  "error": "Error message (optional)",
  "message": "Notification message (optional)"
}
JSON Data: JSON Data

AI MCP Documentation

Add this tool to your MCP server configuration: 

{
  "mcpServers": {
    "elysiatools-audio-true-peak-meter": {
      "name": "audio-true-peak-meter",
      "description": "Analyze audio to find true peak level",
      "baseUrl": "https://elysiatools.com/mcp/sse?toolId=audio-true-peak-meter",
      "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]