MP3 Normalizer for MAC OS X

Version:	1.0.11 (710)
Updated:	22 Jul, 2017
Compatibility:	Mac OS X 10.7 or later

A Godsend, with caveat

First, use Loudness, not Peak, normalization to adjust volume (in preferences, effects) for this app. Now the caveat: The default level to "adjust volume with Loudness normalization" is -15.0 LUFS. This setting is too high, causing high frequency distortion when played back on USB drives. Do NOT use any setting higher than -20.0 LUFS, that is, don’t use any number less than -20.0, and certainly not the default -15.0). With this caveat, I have nothing but praise for this app, a worthy counterpart to iVolume for iTunes m4a files. More versatile, in fact, because it does depend on the software of the playback program (e.g., iTunes) to equalize volume levels among tracks. $9.99 could not be better spent. For the first time in my life I can share music collections on USB thumb drives with family and friends, knowing that they won’t have to ride the volume control. Nice work, Brother Nikolay. You have made an invaluable contribution to the highest expression of humanity: music.

^{By Looktung on Jul 16, 2017, USA}

Smooth Audio Change

Really like that I can balance the level of my sound files to play in a balanced way. No noticeable audio quality change. Worth it :)

^{By YogiFish on May 21, 2016, USA}

Very good, no point in hesitating, just buy it

I tried MP3 Louder first. That is also very good, however its a simpler piece of software for $2, suitable for a quick fix when you need it. But if you really want to squeeze the most out of your sound tracks, this is the one to get, for the extra options. I was particularly impressed that they’ve written a proper recursive tree walk, so that you can audio-normalise an entire folder hierarchy with a single operation. I wish everyone would do that, when they offer file based operations.

^{By Entanon on Jun 29, 2017, UK}

IMPROVE QUALITY OF ENTIRE AUDIO COLLECTION IN ONE CLICK

MP3 Normalizer improves a sound of MP3 files, supports Peak and Loudness (EBU R128) Normalization methods and Automatic Volume Control for processing of speech records.

Simultaneously with normalization, MP3 Normalizer can apply Audio Effects, such as trimming of silence, fade-in, and fade-out for better playback.

MP3 NORMALIZER IS AN IDEAL OPTION FOR:

There are just some common cases of using MP3 Normalizer. However, you can apply it for much wider range of purposes.

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INPUT FORMATS

MP3 Normalizer accepts .mp3 and .wav files. As an output, you will have a new MP3 file with adjusted volume level and applied audio effects.

Please, note, that if you would like to normalize audio files of other formats, you have to convert them to MP3 first. We recommend using our To MP3 Converter for this purpose.

EASY AS ONE, TWO ...

To normalize your MP3 files you have just to drop them in application icon or window. The application will let you know when volume adjusting is done. MP3 Normalizer supports batch processing so you can process a single file or an entire tree of folders at one time.
Read More: Getting Started >>

TRUE BATCH PROCESSING

MP3 Normalizer allows to adjust a volume of the unlimited number of files and folders in one click and supports multiple normalizations simultaneously. If you process an entire tree of folders, MP3 Normalizer will replicate the structure of source folders. It is especially convenient if you need to adjust the volume of entire music collection.
Read More: Getting Started >>

"...batch normalize MP3 and WAV files in no time."

- mac.softpedia.com

CUSTOMISABLE NORMALIZATION METHOD

By default, MP3 Normalizer analyses every audio track and applies Peak Normalization algorithm with Target Level 0 dBFS. You can normalize either by Peak or Loudness (EBU R128) methods by choosing required method in Preferences. For improving the quality of voice records - we recommend enabling Automatic Volume Control, a feature which applies special processing of voice records.
Read More: Audio Effects and Volume Adjusting on Mac OS >>
Read More: Peak and Loudness (EBU R128) Normalization on Mac >>
Read More: Automatic Volume Control >>

AUTOMATIC OUTPUT SETTINGS

MP3 Normalizer estimates Bit Rate, Sample Rate and Channels, and applies optimal settings to output MP3s. It guarantees the best possible sound quality, saves your time and hard drive space.

If you would like to convert to a special Bit Rate, Channels, etc., just change settings in the Preferences.
Read More: Preferences / MP3 Format >>

AUDIO EFFECTS

MP3 Normalizer can apply fade-in and fade-out; trim silence in the start and end of audio tracks automatically. To use the effects simultaneously with volume adjusting, just enable them in Preferences.
Read More: Audio Effects and Volume Adjusting on Mac OS >>
Read More: Automatic Volume Control >>
Read More: Trimming Silence and Noise Automatically >>
Read More: Fade-In & Fade-Out Audio Effects >>

TAGS TRANSFER

MP3 Normalizer transfers all tags from source .mp3 or .wav file to normalized file. If you would like to check or modify tags after normalization, please, use our Tag Editor.
Read More: Preferences / Tags >>

INTEGRATION WITH ITUNES

MP3 Normalizer allows exporting converted tracks to new or existing iTunes playlists by a quick and easy way.
Read More: Exporting converted files to iTunes >>

*Note, we advice select Bitrate at 128 or lower meaning if you will burn normalized MP3 files to CD and listen to it in your car. Many CD car players couldn’t read MP3 files with Bitrates higher than 128 kbps.

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