Is it good to normalize audio?
Should you normalize audio? Normalizing audio is effective for creating consistent levels between samples, vocal takes, and other audio files before/during mixing and even for mastering to bring a group of final music, podcast, or television mixes up to a consistent level.
Can ffmpeg normalize audio?
A utility for batch-normalizing audio using ffmpeg. This program normalizes media files to a certain loudness level using the EBU R128 loudness normalization procedure. It can also perform RMS-based normalization (where the mean is lifted or attenuated), or peak normalization to a certain target level.