How to correctly make an AI cover ?

[dense urchin]

Hello ! For example i download a clean accapella from YT, often the "accapella" versions on youtube, the audio track begins immediately at the beginning of the video, which is not the case in the actual song, the vocals begins later and not at the very beginning. So when i'll have the vocals through the fork, and i'll then have the instrumental of the song, how am i to align the vocal at the moment it should really begin ?

[sweet grotto]

Download your song and extract the vocals using bs roformer on mvsep.com

99% of the time it will be clean

[dense urchin]

is there an equivalent to brosoform with Ultimate vocal remover?

[late radish]

UVR align tool on the instrumental, acapella and mixture tracks
or do manually on Audacity, izotope RX, or any DAW

note that the loseless flac ones will produce better results, otherwise have to separate it in UVR/mvsep

[dense urchin]

what is the UVR align tool ? how to use it ?

[dense urchin]

if doing it manually, how to be sure we're putting back the accapella at the exact same point the original vocal was ?

[dense urchin]

also, it will be hard to find FLAC acapellas... mostly we'll dl a song from youtube (which means mp3 download) then pass it into UVR to get the instrumental + vocal

[late radish]

yeah official acapella tracks are ultra rare, and second is the official instrumentals, moreover also they tend to be misaligned

[dense urchin]

yep so what to do ?

[formal adder]

Ayo? @dense urchin level 4 !!!

[late radish]

inverting the mixture and instrumentals are also not always easy, even when tried using Utagoe on some few flac tacks still produced little instrumental bleed

at least it might help the separation process

[dense urchin]

accapella with reverb in it is good or bad ?

[late radish]

do dereverb in UVR

foxjoy reverb HQ if it is stereo reverb, otherwise UVR deecho dereverb

[dense urchin]

Actually i just made a comparison between BS Roformer andMDX23C-InstVoc , and BS Roformer is way better. So bad UVR do not have bs roformer.

[late radish]

try UVR beta patch here:
https://github.com/TRvlvr/model_repo/releases/download/uvr_update_patches/UVR_Patch_4_14_24_18_7_BETA_full_Roformer.exe
the best so far there is BS roformer 1296, but finetuned one in MVSEP (2024.04) is still better in general

[dense urchin]

no beta patch for mac ? 😦

[late radish]

wait for the stable release

[dense urchin]

Also, please, what to do when you separate audio from the instrumental, and in the vocal track you have the Main Lead Vocal and in the background you have literally the background vocals and/or the adlibs, which may eventually end up screw up the AI Cover. Is there a cool fix for that ? Something like separating again the lead from the background, so you have a track with the instrumental only, then a track with only the lead, and another track with only the background vocals ? Is that even possible ? If yes, how, please ?

[dense urchin]

oki !

[late radish]

UVR BVE works in general, or BVE v2 in x-minus pro. there are also some others like MDX karaoke 2 and UVR 5HP & 6HP that might work in some cases.

[dense urchin]

what is x-minus pro ?

So if i have an accapella that contains some unwanted backgroundvocals, i can put them into UVR 5/6HP and it should split the lead and backgrnd ?

[late radish]

paid subsciption, but BVE in UVR is fine and works as first attempt