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Hitro vprašanje chatgptju. Izbral sem Linux,ker je večja verjetnost, da dobiš orodje brezplačno + sam ga uporabljam.

1 opcija je zapis v metadata fajla, če ga tvoj predvajalnik zna brati.
2. opcija je seveda poseg v mp3, kar on poimenjuje destruktiven poseg, ker lahko boljšemu komadu zniža kvaliteto.

To make all your MP3s sound equally loud, you'll need an application that can perform audio normalization. This process adjusts the volume of audio files so they all reach a consistent perceived loudness, rather than strictly equalizing bitrate. While bitrate affects quality, it doesn't directly control loudness.

Here are a few excellent command-line and GUI options commonly used on Linux:

1. ReplayGain (Command Line: mp3gain)

ReplayGain is a standard that analyzes the perceived loudness of audio files and then stores this information as metadata in the files themselves. Compatible players can then use this metadata to adjust playback volume on the fly without altering the audio data directly. This is often the preferred method as it's non-destructive.

mp3gain: This command-line tool is specifically designed for MP3s and implements the ReplayGain standard. It can analyze and apply ReplayGain tags.

Installation (example for Debian/Ubuntu-based systems):
Bash

sudo apt update
sudo apt install mp3gain

Usage Example (to analyze and apply gain to all MP3s in a directory):
Bash

mp3gain -r *.mp3

The -r flag applies track gain (adjusting each track individually). You can also use -a for album gain (adjusting all tracks in an "album" together based on the average loudness).

2. SoX (Sound eXchange - Command Line)

SoX is a highly versatile command-line utility for audio manipulation. While more complex, it offers powerful normalization capabilities by directly modifying the audio data. This is a destructive process, so it's a good idea to back up your files first.

Installation (example for Debian/Ubuntu-based systems):
Bash

sudo apt update
sudo apt install sox libsox-fmt-mp3

Usage Example (to normalize an MP3 to a target loudness):
Bash

sox input.mp3 output.mp3 norm

This command applies a general normalization. For more precise control over the target loudness (e.g., to a specific decibel level like -3dBFS peak):
Bash

sox input.mp3 output.mp3 gain -n -3

The -n flag normalizes to 0 dBFS peak before applying the gain, ensuring consistency.

3. Audacity (GUI Application)

Audacity is a free, open-source, and powerful graphical audio editor available for Linux. It's excellent for visual editing and also includes a robust Normalize effect. This method is interactive and allows you to preview changes.

Installation (example for Debian/Ubuntu-based systems):
Bash

sudo apt update
sudo apt install audacity

How to use the Normalize effect:

Open Audacity.

Go to File > Import > Audio... and select your MP3s. You can import multiple files at once.

Select all tracks (Ctrl+A or Cmd+A).

Go to Effect > Normalize...

In the Normalize dialog box, you can set options like "Remove DC offset" and "Normalize maximum amplitude to" (e.g., -1.0 dB).

Click OK. Audacity will process all selected tracks.

Export your normalized files: File > Export > Export Multiple... to export them back to MP3 (or another format).

Which one should you choose?

For simple, non-destructive volume adjustment based on perceived loudness, mp3gain (ReplayGain) is usually the best and easiest option for MP3s. It doesn't re-encode the audio, preserving original quality.

For more advanced, destructive normalization and general audio processing, SoX is incredibly powerful but has a steeper learning curve.

For a visual, interactive, and comprehensive audio editing experience, Audacity is your go-to. It's great if you prefer a GUI and might want to do other edits.

Remember that normalizing audio files by directly modifying them (like with SoX or Audacity's export) will re-encode the MP3s. If your original MP3s are already high quality, this re-encoding might introduce a slight generational loss in quality, though for most listeners, it will be imperceptible. ReplayGain, on the other hand, avoids this by only adding metadata.

Ghost7 je 18. jul 2025 ob 14:23:01 izjavil:

Hitro vprašanje chatgptju...

Ker so zgleda vsi ostali ljudje tolikšni idioti, da ne znajo sami vprašati nek LLM, moraš ti. Si to misliš, ko lepiš ta drek nakoli?

Če že, si še vzemi toliko časa, da strneš ta 100x predolg tekst v tisti relevanten odstavek ali dva. Boš vmes še ugotovil, ali je čisto falil ali ne.