# Album Loudness Matcher Match a batch of tracks to one target loudness the way album gain works: one gain for the whole record keeps intentional inter-track dynamics, hybrid mode only tames outliers, per-track mode flattens everything. > Canonical page: https://elysiatools.com/en/tools/audio-album-loudness-matcher - **Category:** Media - **Keywords:** album loudness, album gain, replaygain, loudness matching, lufs normalization, ebu r128, batch normalize, inter-track dynamics, true peak, playlist loudness, album mastering ## Overview Upload the tracks (files or one ZIP, up to 20). Every track is measured with the EBU R128 chain (integrated LUFS, true peak), and the album loudness is summed with the R128 segment formula — the same energy-weighted math ReplayGain album gain uses, so a 40-second interlude does not get crushed to match a 5-minute anthem. Album mode then applies ONE gain (target − album loudness) to every track: the quiet ballad stays quieter than the loud single, exactly as mastered, which is how loudness normalization on streaming platforms treats an album anyway. Hybrid mode keeps every inter-track difference inside a tolerance band you set (default 2 LU) and only pulls outliers back toward the band — quiet intro and loud finale survive, the one misdelivered -8 LUFS demo gets tamed. Per-track mode normalizes each file to the same loudness for playlists and sync libraries. True-peak safety is always on: if the planned gain would push a track past your dBTP ceiling (default -1), album mode lowers the whole album’s gain to keep the record coherent, while the other modes trim that track or — with the limiter switch — run a true-peak limiter stage instead (attack 5 ms, release 50 ms, level disabled). Renders are lossless (WAV/FLAC), every output is re-measured so the report shows measured-after values, and everything lands in a ZIP with a per-track CSV gain sheet. ## Inputs - **Track files or ZIP** (file) - **Target** (select) - **Matching mode** (select) - **Hybrid tolerance (LU)** (number) - **Custom target (LUFS)** (number) - **True-peak ceiling (dBTP)** (number) - **Limit instead of gain-trim** (checkbox): When a track would exceed the true-peak ceiling, insert a limiter stage instead of trimming its gain (album mode always trims the whole album). - **Output Format** (select) ## When to use - Use it when you need to convert audio files content quickly in the browser. - Helpful for media workflows that need repeatable inputs and fast results. - A good fit when you want to test with real files before running the same workflow in code or API calls. ## How it works - Provide Track files or ZIP, Target, Matching mode, Hybrid tolerance (LU) as input to the tool. - The tool processes the request and returns a file result. - For file workflows, start with representative samples such as audio files test files to verify edge cases and output quality. ## Use cases - Convert audio files data during debugging or QA. - Validate expected output before using the API or automation flows. - Test the workflow with representative sample files and edge cases. ## Frequently asked questions ### What does Album Loudness Matcher do? Album Loudness Matcher helps you convert audio files content online without setting up a separate local script or app. ### When should I use this tool? Use it when you need a quick convert workflow, want to verify output, or need a browser-based utility for media tasks. ### Can I try this tool with sample data? Yes. This page can recommend related sample files so you can test the workflow immediately. ### What inputs does Album Loudness Matcher accept? Album Loudness Matcher accepts Track files or ZIP, Target, Matching mode, Hybrid tolerance (LU) and supports file uploads for 1 field. ### Is there an API for Album Loudness Matcher? Yes. The tool page includes an API endpoint so you can move from manual testing to scripted usage. ## Related tools - [Audio Add Silence](https://elysiatools.com/en/tools/audio-add-silence): Add a specified duration of silence to the start or end of an audio file - [Audio Ambience Loop Generator](https://elysiatools.com/en/tools/audio-ambience-loop-generator): Extract the background ambience/room tone from a fragment and generate a seamless loop of any target length. - [Audio Band-Pass Filter](https://elysiatools.com/en/tools/audio-band-pass-filter): Allow only a specific band of frequencies to pass - [Batch Audio Normalize](https://elysiatools.com/en/tools/audio-batch-normalize): Normalize multiple audio files to a target peak level with consistent volume across the batch - [Audio Beat Matcher](https://elysiatools.com/en/tools/audio-beat-matcher): Adjust tempo to match a target BPM - [Audio Fade In](https://elysiatools.com/en/tools/audio-fade-in): Apply a fade-in effect to the beginning of the audio - [Audio Fade Out](https://elysiatools.com/en/tools/audio-fade-out): Apply a fade-out effect to the end of the audio - [Extract Left Channel](https://elysiatools.com/en/tools/audio-left-channel-extract): Extract only the left channel to a mono file ## Samples - [Copyright-Free FLAC Audio Samples](https://elysiatools.com/en/samples/flac-samples): Lossless FLAC audio samples for testing and development, mirrored from MP3 set with nature sounds and meditation music - [Copyright-Free MP3 Audio Samples](https://elysiatools.com/en/samples/mp3-samples): Collection of royalty-free audio samples for testing and development purposes including nature sounds, meditation music, and ambient audio - [Copyright-Free WAV Audio Samples](https://elysiatools.com/en/samples/wav-samples): Uncompressed PCM WAV audio samples for testing and development, mirrored from MP3 set with nature sounds and meditation music - [Copyright-Free Raw PCM Audio Samples](https://elysiatools.com/en/samples/pcm-samples): Raw PCM s16le audio samples featuring nature ambience and relaxing music for waveform, playback, and conversion workflows