Key Facts
- Category
- Images, Audio & Video
- Input Types
- file, checkbox
- Output Type
- json
- Sample Coverage
- 4
- API Ready
- Yes
Overview
The Audio Diff tool allows you to compare two audio files side-by-side to analyze differences in format, duration, file size, bitrate, and sample rate. By generating a detailed similarity report and optional SHA-256 cryptographic hashes, it helps you verify audio conversions, detect compression losses, and ensure file integrity.
When to Use
- •When verifying that an audio format conversion preserved the original duration and sample rate.
- •When checking if two audio files are identical at a binary level using SHA-256 hash verification.
- •When auditing audio assets to detect differences in bitrate, file size, or metadata between original and compressed versions.
How It Works
- •Upload the first audio file as the primary reference.
- •Upload the second audio file that you want to compare against the first.
- •Optionally check the 'Include SHA-256 Hash' option to perform a cryptographic integrity check.
- •Click compare to generate a structured JSON report detailing differences in format, duration, size, bitrate, and sample rate.
Use Cases
Verifying audio transcoder output to ensure sample rates and durations match the source files.
Detecting duplicate audio files in a media library by comparing file sizes, bitrates, and SHA-256 hashes.
Quality assurance testing for game audio assets to confirm compression settings were applied correctly.
Examples
1. Verifying MP3 Conversion Quality
Podcast Producer- Background
- A podcast producer converted a master WAV file to MP3 for distribution and needs to ensure the duration matches exactly and the bitrate is correct.
- Problem
- The producer wants to confirm the MP3 conversion did not truncate the audio or alter the sample rate.
- How to Use
- Upload the master WAV file as the first audio file, upload the converted MP3 as the second audio file, and run the comparison.
- Example Config
-
First Audio: master.wav, Second Audio: episode1.mp3, Include SHA-256 Hash: false - Outcome
- A JSON report showing identical durations (45:02), a sample rate of 44100 Hz for both, and the expected file size reduction.
2. Checking Audio File Integrity
Sound Designer- Background
- A sound designer downloaded a backup of a sound effect file and wants to make sure it wasn't corrupted or modified during transfer.
- Problem
- The designer needs to verify if the backup is a bit-for-bit identical copy of the original local file.
- How to Use
- Upload the original local WAV file, upload the downloaded backup WAV file, check the 'Include SHA-256 Hash' option, and compare.
- Example Config
-
First Audio: laser_sfx.wav, Second Audio: laser_sfx_backup.wav, Include SHA-256 Hash: true - Outcome
- The tool generates a JSON report showing matching SHA-256 hashes, confirming the backup is completely uncorrupted and identical.
Try with Samples
audio, hash, fileCopyright-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
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
Copyright-Free M4A Audio Samples
Apple iTunes compatible M4A audio samples with AAC encoding, optimized for quality and file size balance
title token 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
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FAQ
What audio formats does this tool support?
The tool supports standard audio formats including MP3, WAV, AAC, FLAC, OGG, and M4A.
How does the tool calculate similarity?
It compares technical metadata such as duration, sample rate, bitrate, and file size, and can perform a binary hash comparison if selected.
What is the maximum file size I can upload?
You can upload audio files up to 200 MB each.
Why should I include the SHA-256 hash in the comparison?
Enabling the SHA-256 hash option lets you verify if the two files are bit-for-bit identical, which is useful for detecting even minor edits or corruption.
Does this tool compare the actual sound waves or audio content?
It compares technical properties, metadata, and binary hashes rather than performing acoustic fingerprinting.