Volume Normalise not working - Release 2025-12-24 (1)

[EricH]

Mac OS Monterey, trying to batch convert my library to FLAC 24bit, Mono, 48kHz normalized to EBU R128 (track gain) with a target of -12LUFS. DSP effects are set in that order, the first 3 work, volume normalize does not. I tried to save to different folders (including overwrite) to no avail. I end up with files at -21 to -13 LUFS. I do the same thing in RX 11 and it comes out fine. I have over 10000 tracks to process and RX batch window does not allow saving source path which means I would have to go through each artist and album folder individually. Anyhow not the issue, any idea why dB batch converter failing LUFS normalization ?

[Spoon]

R128 is based on average percieved (by the ear) loudness, not peak, how are you detecting the files are -21 to -13?

To be 100% certain it is not working, convert one try with and without Volume Normalize to lossless (two different filenames), then convert those two files together to [Calculate Audio CRC], if the CRCs are the same then the loudness did not change.

[EricH]

Hi Spoon, thanks for your reply. As I mentioned I have iZotope RX, I ran the files converted with dBpoweramp through RX loudness control module and got integrated LUFS measurements ranging from -21 to -13. I converted the same original files with RX loudness control module and got consistent target level of -12 LUFS +/-0.5 as well as -1dBTP. I also ran the dB converted files through metering plugins (Insight 2 and Waves LM)and the readings are equally inconsistent.
Also, I can tell by listening to them they don't have the same average loudness.

[Spoon]

Do the test please to see if the volume change is being applied.