First vocal models trained by UVR for MDX-Net arch:
9.703 model is UVR-MDX-NET 1, UVR-MDX-NET 2 is UVR_MDXNET_2_9682, NET 3 is 9662, all trained at 14.7kHz
(instrumental based on processed phase inversion)
List of all (newer) available MDX models at the very top.
I think main was 438 in UVR 5 GUI at some point. At least now it's simply main_438 (if it wasn't from the beginning, but it was easy to confuse it with simply main model or even inst main)
(use MDX is a way to go now over VR) Generally use MDX when the results achieved with VR architecture are not satisfactory - e.g. too much vocal bleeding (e.g. in deep and low voices) or damaged instruments. If you only want acappella - it’s currently the best solution. Actually the best in most cases now.
MDX-UVR models are also great for cleaning artifacts from inverts (e.g. mixture (regular track) minus official instrumental or acappella).
(outdated) 9.682 might be better for instrumentals and inversion in some cases, while 9.7 for vocals, but better check already also newer models like 464 from KoD update (should be better in most cases) and also check Kim Model in GUI.
Generally on MVSEP's multisong dataset, these models received different SDR than on MDX21 dataset back in the days.
On MVSEP there’s 9.7 (NET 1) model, and it doesn't have any cutoff above training frequency for inverted instrumentals like currently GUI has. For (new) model it’s vocal 423 model and possibly with Demucs 2 enabled like in Colab, but it doesn’t have a specific jaggy spectrum above MDX training frequency which is specific to inverted vocal 4XX models from that period including Kim’s model.
Non-onnx version of voc_ft model in pth by MusicMan - 20x faster on MPS devices:
https://discord.com/channels/708579735583588363/887455924845944873/1204148534790852608 (roughly the same model size)
It won’t work in UVR. Inference code mirror: https://drive.google.com/file/d/1aSe0bwgIWhR7vvF1aoHQlCHpj39Kd-YK/view?usp=sharing
Mirror:
https://drive.google.com/drive/folders/16QbwuCBT0_w9nmNDg22m1niq0odtaZUP?usp=sharing
And the rest of MDX-Net v2 models: HQ_1-5, inst3, Kim inst, Kim Vocal 1-2, and older narrowband vocal and instrumental ones and Karaoke models.