| Software | Platform | Key Feature | Cost | |----------|----------|-------------|------| | | Windows/Linux | Lossless MP3 volume adjustment | Free | | Audacity | Win/Mac/Linux | Full editor with loudness normalization (LUFS) | Free | | foobar2000 | Windows | ReplayGain scanner and player | Free | | R128GAIN | Cross-platform | EBU R128 loudness normalization | Free | | iZotope RX | Win/Mac | Professional audio repair & loudness control | $399+ | | Platinum Notes | Win/Mac | Mixed normalization/compression for DJs | $99 |
Podcasters recording on different days or with different microphones can use RMS normalization to ensure each episode plays at the same subjective loudness. sound normalizer 8.7 full