TEMPORARY MEDIA WORKSPACE / AUDIO VOLUME NORMALIZER

Audio Volume Normalizer

Create a listening-level MP3 using a bounded EBU-style loudness target and true-peak ceiling for more consistent playback.

Request-scoped temporary processingAdd one supported file up to 50 MB. Long or unusually large-frame media may be rejected before processing.No account required

Local API readinessMedia service ready

The processor required by this tool is available, and this worker can accept a temporary job.

One bounded job runs per API worker by default.

Step 1 / source

Add the source media

1 file / 50 MB

Source intake

Drop one media file here

Choose the recording whose overall playback loudness should be made more consistent.

Browse media

MP3, WAV, M4A, AAC, OGG, OPUS, FLAC, or WMA1 file / 50 MB

Checking publication status before file selection...

Temporary server workspace

The selected bytes are sent only to the Nirmion media API for this request. Processing uses a private temporary workspace rather than permanent catalogue storage.

Request-scoped cleanup

Server-side source and result files are removed when the response stream closes. Re-downloads use the result Blob retained only in this browser tab.

Original stays unchanged

Nirmion writes a separately named result containing nirmion_tools and never overwrites the selected source file.

Know the product contract

What goes in, what changes, what comes back

Every media page documents the accepted source, the selected FFmpeg transformation, the output container, and the limits that can affect the job.

Prepare the source

Check the source for clipping, severe noise, or large internal level changes first.

Apply one operation

FFmpeg analyzes and filters the stream toward the selected integrated LUFS target with an -1.5 dB true-peak ceiling, then writes MP3.

OUT

Receive a separate file

Listen on headphones and speakers; compare quiet and loud passages and confirm the destination specification.

Plain-language method

How loudness normalization differs from volume gain

Normalization cannot restore clipped samples, remove noise, master dynamics, or guarantee exact platform playback after transcoding.

01
Choose valid source media
Check the source for clipping, severe noise, or large internal level changes first.
02
Review the operation settings
Use -18 for a quieter target, -16 for speech-first delivery, or -14 only when the destination expects a louder result.
03
Inspect and download the result
Listen on headphones and speakers; compare quiet and loud passages and confirm the destination specification.

Useful when

Practical jobs this tool handles

Standardize voice memo playback.
Prepare a podcast review copy.
Reduce large level differences across exported recordings.

Before processing

Check the source and output choices first

Confirm the destination target.
Keep the original master.
Listen for clipping and pumping.
Recheck after any platform transcode.

Container and codec

Understand the output format

All supported sources become a stereo-compatible 192 kbps MP3; source metadata is removed.

Know the boundary

Loudness normalization is not full mastering

One-pass filtering targets overall loudness but does not replace manual dynamics, EQ, noise repair, or final compliance measurement.

Quick answers

Questions before you process media

These answers describe the actual upload, FFmpeg processing, download, and temporary-retention contract.

Does it remove background noise?

No.

Will every moment have equal volume?

No. Integrated loudness is an overall measurement.

Why MP3 output?

The bounded profile provides a predictable, broadly playable review file.