MP3 Normalizer

Name: MP3 Normalizer
Rating: 0 (0 reviews)
Author: Amvidia Limited

Batch EQ/Boost MP3 File Volume

Only for Mac

Free · In‑App Purchases

Ages

4+
Years
Category

Music
Developer

Amvidia Limited
Language

EN
English
Size

70
MB

Mac

MP3 Normalizer enhances the listening experience by batch equalizing music volume, boosting voice loudness, and ensuring seamless transitions between tracks. MP3 NORMALIZER IS AN IDEAL OPTION FOR: • Equalizing the loudness across a song list; • Balancing the volume throughout a voice recording; • Audio compression for mobile and car listening; • Improving the quality of old and poorly-sounded records. INPUT FORMATS MP3 Normalizer accepts .mp3 and .wav files, generating a new MP3 file with an adjusted volume level. CHOOSING A NORMALIZATION METHOD AND LEVEL In the Settings / Effects window, you can manage volume normalization and audio effects. To boost the volume of MP3 tracks, you can use Peak or Loudness (EBU R128) Normalization methods. The enabled Automatic Volume Control feature ensures clear and audible voice recordings. MP3 Normalizer applies the Loudness (EBU R128) Normalization algorithm with a Target Level of -18 LUFS by default. EBU R128 algorithm intelligently analyzes sound, similar to how we hear it. It is an excellent solution for standardizing perceived loudness levels across a list of songs, ensuring a seamless listening experience. The Peak Normalization method adjusts the loudest peak to the target level without compressing or distorting the sound. AUTOMATIC VOLUME CONTROL Automatic Volume Control makes quiet parts of voice records clear and hearable. It automatically amplifies silent segments of audio. We recommend enabling Automatic Volume Control while processing interviews, podcasts, and audiobooks. MAKE MP3 TRANSITIONS SEAMLESS Applying audio effects enhances the listening experience by ensuring smooth and continuous music playback. You can control the duration of the fade-in, fade-out, and silent threshold for trimming. To apply these effects along with volume adjustment, enable them in the Settings / Effects. AUTOMATIC MP3 SETTINGS MP3 Normalizer automatically calculates the Bit Rate, Sample Rate, and Channels to apply the best settings to your MP3 files. Automatic MP3 settings ensure high sound quality and save time and hard drive space. If you prefer to convert to a specific Bit Rate, Channels, or other settings, adjust them in the Settings / Format tab. BATCH PROCESSING MP3 Normalizer can adjust volume of unlimited files and folders in a single click. It also supports multiple normalizations simultaneously. Additionally, the application can replicate the structure of source folders when adjusting the volume of an entire music collection. TAGGING ON THE FLY MP3 Normalizer can transfer all tags from source .mp3 and .wav files, create missing metadata from file and folder names, or load music tags from online databases, such as MusicBrainz, AcoustID, and CoverArt. If you want to check or modify tags after normalization, please use our Tag Editor. MP3 RENAMER & ORGANIZER Rename and organize normalized MP3 files into folders and playlists according to Artist, Album, and other audio metadata chosen in the Settings / General / Destination Files. INTEGRATION WITH ITUNES / APPLE MUSIC MP3 Normalizer can quickly and easily export tracks to a new or existing iTunes or Music app playlist. CONVERT ENTIRE AUDIO COLLECTIONS WITH PREMIUM FEATURES MP3 Normalizer is free to download, but some features are limited. Upgrading to Premium unlocks Batch Processing, Metadata Downloader, and Audio Effects, allowing for effortless volume leveling of your audio collection. The Premium Features subscription auto-renews unless canceled in your App Store Account Settings before the billing period ends. Terms of Use MP3 Normalizer: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ . CUSTOMER SUPPORT Please contact support@amvidia.com for any issues or feature requests. If you enjoy MP3 Normalizer, please take a moment to leave a review on the App Store.

Ratings & Reviews

This app hasn’t received enough ratings or reviews to display an overview.

A Godsend, with caveat
07/16/2017

Looktung
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.
A Godsend, with caveat
07/16/2017

Looktung

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.
Great for podcasts
01/19/2020

Craig B SC
Great for podcast volume control. I found the parameters of "adjust volume with loudness normalization set to -13.0 LUFS" and "enable automatic volume control" to work well with all of my voice podcasts. Not sure what it would do to music. I tried some competing (cheaper or free) products, but this is the only one that worked well for my situation.  I needed this product after purchasing a recessed lighting/bluetooth speaker unit for my shower. Without this product, I could not hear some guests in various podcasts due to the shower noise. With this product, I have yet to miss any spoken words across many different podcasts.  Also, a couple of my podcasts have loud commericals (relative to the normal podcast) inserted automatically at random places that used to cause me to have to yank out my earphones at the gym to avoid ear damage. This problem has also been solved by using this product.Recommended!
Great for podcasts
01/19/2020

Craig B SC

Great for podcast volume control. I found the parameters of "adjust volume with loudness normalization set to -13.0 LUFS" and "enable automatic volume control" to work well with all of my voice podcasts. Not sure what it would do to music. I tried some competing (cheaper or free) products, but this is the only one that worked well for my situation.  I needed this product after purchasing a recessed lighting/bluetooth speaker unit for my shower. Without this product, I could not hear some guests in various podcasts due to the shower noise. With this product, I have yet to miss any spoken words across many different podcasts.  Also, a couple of my podcasts have loud commericals (relative to the normal podcast) inserted automatically at random places that used to cause me to have to yank out my earphones at the gym to avoid ear damage. This problem has also been solved by using this product.Recommended!
Excellent app!
12/08/2018

Brooklylion
I've been using waterproof MP3 player while swimming and constantly suffered from volume issues. Some songs sounded so soft only dogs could hear them, while others almost ruptured my eardrum. I was initially sceptical about paying for an app that basically equalize volume, but at the same time could not find anything free that did it. I have to say that this app is well worth the money. I don't really know about technical stuff like LUFS and bit rates (and find the support pages somewhat difficult to understand), but all I know is that once I converted the songs they all normalized in volume! I like the option of deleting original "non-normalized" songs after converted ones are loaded: this eliminates the need of guessing which are which. There's also an option of automatically add converted songs to iTunes. Very nice app overall.
Excellent app!
12/08/2018

Brooklylion

I've been using waterproof MP3 player while swimming and constantly suffered from volume issues. Some songs sounded so soft only dogs could hear them, while others almost ruptured my eardrum. I was initially sceptical about paying for an app that basically equalize volume, but at the same time could not find anything free that did it. I have to say that this app is well worth the money. I don't really know about technical stuff like LUFS and bit rates (and find the support pages somewhat difficult to understand), but all I know is that once I converted the songs they all normalized in volume! I like the option of deleting original "non-normalized" songs after converted ones are loaded: this eliminates the need of guessing which are which. There's also an option of automatically add converted songs to iTunes. Very nice app overall.
Exactly What I Was Looking For!
12/03/2017

Captn James
I have copied over 550 songs from records, tapes, CD,s etc. into one file. Some song volumes are soft, low, loud. Many Genres from old classic to modern rock. Now, to the point. I am able to drag and drop one song or all into the MP3 Normalizer box and simply all are done very fast. Plus this app can clip slow beginnings such as from old LP Records. I created a folder called MP3-Normalizer as a destination place for them to wind up. Then copy and paste the whole bunch back where it started. I’m not very computer smart, but this app pretty much does it for me. Oh, it is a MP3 program so all songs going into it must be MP3. So convert any you want and bingo!
Exactly What I Was Looking For!
12/03/2017

Captn James

I have copied over 550 songs from records, tapes, CD,s etc. into one file. Some song volumes are soft, low, loud. Many Genres from old classic to modern rock. Now, to the point. I am able to drag and drop one song or all into the MP3 Normalizer box and simply all are done very fast. Plus this app can clip slow beginnings such as from old LP Records. I created a folder called MP3-Normalizer as a destination place for them to wind up. Then copy and paste the whole bunch back where it started. I’m not very computer smart, but this app pretty much does it for me. Oh, it is a MP3 program so all songs going into it must be MP3. So convert any you want and bingo!

Normalize and clean up your audio in one pass. MP3 Normalizer makes loudness consistent, fixes clipping, and preserves quality— fast, batch-friendly, and now fully tuned for macOS 26. Enjoy a more straightforward UI, reliable tagging, and stable processing for large libraries. • Compatibility with macOS 26 Tahoe • New app icon to match the macOS 26 design • Improved MP3 volume normalization & batch audio processing Premium Features subscribers benefit from faster performance, smoother tag handling, and full access to batch tools and advanced normalization options.

Version 2.0.1

Oct 27

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Supported Features
- VoiceOver
- Dark Interface
- Differentiate Without Color Alone
- Audio Descriptions

Information

Seller
Size
Category
Compatibility
Languages
Age Rating
In-App Purchases
Copyright

Developer Website

Privacy Policy

Supports

Family Sharing

Some in-app purchases and subscriptions may be shareable with your family group when Family Sharing is enabled. Learn More

MP3 Normalizer

Batch EQ/Boost MP3 File Volume

Ratings & Reviews

A Godsend, with caveat

Great for podcasts

Excellent app!

Exactly What I Was Looking For!

What’s New

2.0.1

2.0.0

1.0.21

1.0.20

1.0.19

1.0.18

1.0.17

1.0.16

1.0.15

1.0.14

1.0.12

1.0.10

1.0.8

1.0.7

1.0.2

1.0.1

1.0.0

Version 2.0.1

App Privacy

Data Not Collected

Accessibility

Supported Features

VoiceOver

Dark Interface

Differentiate Without Color Alone

Audio Descriptions

Information

Supports

Family Sharing