It requires ffmpeg to be installed
npm i normalize-audio-loudness-loader
In the WebPack config, add the loader for the audio files you want normalized:
{
test: /\.mp3$/,
use: [
{
loader: require.resolve('file-loader'),
},
{
loader: "normalize-audio-loudness-loader",
options: {
targetLoudness: -14,
}
},
],
},
Note that the loader gets an audio file and outputs the wav directly without emitting files. It is intended to be used with other loaders that write the audio and emit it. (such as the file-loader)
You can set 3 values:
targetLoudness
: The target loudness (default: -23)lra
: Loudness range (default: 7)tp
: True peak (default: -2)