Audio Podcast Loudness Compliance Report

Audio Podcast Loudness Compliance Report | Online Free Tool | Elysia Tools

Tool usage guide

Learn when to use this tool, what it supports, and how real users apply it.

Key facts

Category: Media
Input types: file, select
Output type: json
Sample coverage: 4
API ready: Yes

Overview

The Audio Podcast Loudness Compliance Report tool analyzes your audio files using FFmpeg and ffprobe to measure integrated LUFS, true peak, loudness range (LRA), channel layout, bitrate, and sample rate, comparing them directly against target specifications for Apple Podcasts, Spotify, YouTube, ACX, and broadcast standards.

When to use

Before publishing a podcast episode to ensure it meets the loudness targets of Spotify, Apple Podcasts, and YouTube.
Prior to submitting an audiobook to ACX (Audible) to verify compliance with their strict LUFS and true peak limits.
During post-production to check if your master audio file aligns with EBU R128 broadcast standards or AES streaming guidelines.

How it works

1Upload your audio file, such as an MP3 or WAV podcast episode.
2Select the target platforms you want to check against, such as Spotify, Apple Podcasts, or ACX.
3The tool runs FFmpeg loudnorm and ffprobe to extract loudness metrics, channel configuration, and container metadata.
4A detailed JSON report is generated, highlighting compliance status for each selected platform's specifications.

Use cases

Verifying podcast master files against Spotify and Apple Podcasts loudness targets to prevent automatic platform normalization.
Checking audiobook chapters for ACX compliance to avoid rejection during the Audible submission process.
Auditing broadcast audio files to ensure they meet EBU R128 standards for television and radio transmission.

Examples

1. Mastered Podcast Episode Compliance Check

Podcast Producer

Background

A podcast producer has finished mastering an episode and wants to ensure it sounds consistent across Spotify, Apple Podcasts, and YouTube without triggering aggressive platform-side limiting.

Problem

The producer needs to verify that the integrated LUFS and true peak levels match the target specifications of all major streaming platforms.

How to use

Upload the mastered MP3 file and select Apple Podcasts, Spotify, and YouTube from the platform list to run the analysis.

Platforms: apple-podcasts, spotify, youtube

Outcome

The tool outputs a JSON report confirming the file is at -16 LUFS with a -1.5 dBTP true peak, indicating full compliance with Spotify and Apple Podcasts.

2. ACX Audiobook Submission Audit

Audiobook Narrator

Background

An independent narrator is preparing to upload a newly recorded audiobook chapter to ACX (Audible) but is worried about strict quality control rejections.

Problem

The narrator needs to guarantee the audio meets the specific ACX requirements of -18.5 LUFS and a maximum -3 dBTP true peak.

FAQ

What loudness standards does this tool check against?

It checks against Apple Podcasts, Spotify, YouTube, ACX (Audible), Broadcast (EBU R128), and AES Streaming targets.

Which audio metrics are analyzed in the report?

The tool measures integrated LUFS, true peak, loudness range (LRA), stereo/mono configuration, bitrate, and sample rate.

What technology is used to analyze the audio files?

It uses FFmpeg's loudnorm filter for EBU R128 loudness measurement and ffprobe for container metadata analysis.

Can I check compliance for only one specific platform like ACX?

Yes, you can select individual platforms or check all of them simultaneously using the platform selection option.

What file formats are supported?

The tool supports standard audio file formats, including MP3 and WAV, up to the file size limit.

Platforms: acx-audible

What this tool helps you do

Run this tool

Prepared example runs

Inputs

Result

Examples that match this tool

Continue with connected tools and hubs

Prepared example runs

Inputs

Result

Learn when to use this tool, what it supports, and how real users apply it.

Key facts

Overview

When to use

How it works

Use cases

Examples

1. Mastered Podcast Episode Compliance Check

2. ACX Audiobook Submission Audit

FAQ

Copyright-Free FLAC Audio Samples

Copyright-Free MP3 Audio Samples

Copyright-Free WAV Audio Samples

Copyright-Free Raw PCM Audio Samples

Audio Bitcrusher

Audio Loudness LUFS Normalizer

Audio Click Removal

Audio Interview Level Matcher

Audio Encoding and Format Conversion Tools

Audio Editing and Cleanup Tools

Audio Preview, Tone, and Effect Generator Tools

Audio Measurement and Inspection Tools