Ensemble of best vocal models. Algorithm gives the highest possible quality for vocal and instrumental stems. The latest ensemble consists of BSRoformer, MelRoformer and SCNet XL vocal models.

Quality table

This ensemble is based on algorithm which took 2nd place at Music Demixing Track of Sound Demixing Challenge 2023. The main changes comparing to contest version is much better vocal models, which is used here. We use following different models for vocals: UVR-MDX-NET-Voc_FT, Demucs4 Vocals 2023, best MDX23C model, VitLarge23, BS Roformer, Mel Roformer and SCNet XL. For stems 'bass', 'drums' and 'other' we us the following 4 models: demucs4ht_ft, deumcs4_ht, demucs4_6s and demucs3_mmi. Initial winning model available here: https://github.com/ZFTurbo/MVSEP-MDX23-music-separation-model

Quality table

It's Ensemble (vocals, instrum, bass, drums, other) + more models included like guitars, piano, back/lead vocals and drumsep (4 stems extracted from drums: kick, toms, snare, cymbals). The algorithm works very slow but gives the most precise result plus a lot of additional stems. Guitar, piano, drums bass etc gives better results because they use filtered source from other stems.

Algorithm Demucs4 HT splits track into 4 stems (bass, drums, vocals, other). It's now best for bass/drums/other separation. It was released in year 2022 and has 3 versions: 

• htdemucs_ft - best quality, but slow
• htdemucs - lower quality, but fast
• htdemucs_6s - it has 2 additional stems "piano" and "guitar" (quality for them is still so-so).

Link: https://github.com/facebookresearch/demucs/tree/ht/demucs

Quality table

BS Roformer model. Excellent quality for vocals/instrumental separation. It's modified version of initial BS Roformer model. Modifications were made by lucidrains on github. 2nd version of weights for model (with better quality) was prepared by viperx. Latest versions is fintuned viperx model with better metrics on 3 different checking systems.

Quality table

Algorithm for separating tracks into vocal and instrumental parts based on the MelBand Roformer neural network.  The neural network was first proposed in the paper "Mel-Band RoFormer for Music Source Separation" by a group of scientists from ByteDance. The first high-quality weights were made publicly available by Kimberley Jensen. The neural network with open weights was then slightly modified and further trained by the MVSep team in order to improve quality metrics. Also there are high quality weights provided by: @Bas Curtiz, @unwa and @becruily.

Quality metrics

Detailed statistics on Multisong dataset:

New set of models MDX23C is based on code released by kuielab for Sound Demixing Challenge 2023. All models are full band, e.g. they don't cut high frequences.

Quality table

Algorithm for separating tracks into vocal and instrumental parts based on the SCNet neural network. The neural network was proposed in the article "SCNet: Sparse Compression Network for Music Source Separation" by a group of scientists from China. The authors made the neural network code open source, and the MVSep team was able to reproduce results similar to those presented in the published article. First, we trained a small version of SCNet, and then after some time, a heavier version of SCNet was prepared. The quality metrics are quite close to the quality of Roformer models (which are the top models at the moment), but still slightly inferior. However, in some cases, the model can work better than Roformers.

Quality metrics

Detailed statistics on Multisong dataset:

MDX B models are based on kuielab code from Music Demixing Challenge 2021. Models were retrained by UVR team on big dataset. For long time models were best for vocals/instrumental separation.

Quality table

A set of models from the Ultimate Vocal Remover program, which are based on the old VR architecture. Most of the models are vocal, but there are also special models for karaoke, piano, removing reverberation effects, etc. Overall the models have average separation quality, but may be useful in some scenarios.

Demucs4 Vocals 2023 model - it's Demucs4 HT model fine-tuned on big vocal/instrumental dataset. It has better metrics for vocals separation compared to Demucs4 HT (_ft version). It usually gives worse metrics than MDX23C models, but can be useful for ensembles, since the model is very different from MDX23C. 

Quality table

The MDX-B Karaoke model was prepared as part of the Ultimate Vocal Remover project. The model produces high-quality lead vocal extraction from a music track. The model is available in two versions. In the first version, the neural network model is used directly on the entire track. In the second version, the track is first divided into two parts, vocal and instrumental, and then the neural network model is applied only to the vocal part. In the second version, the quality of separation is usually higher and it becomes possible to additionally separate the backing vocals into a separate track. The model was compared with two other models from UVR (they are also available on the website) on a large validation set. The metric used is SDR: the higher the better.

See the results in the table below.

Algorithm for extracting only lead vocals and everything else based on the MelBand Roformer model. It works for any music track, but you can also pre-extract vocals by selecting the "Extract vocals first" option in Extraction type. In the second case, back vocals will be available in a separate file.

There are 2 models, one prepared by the team @aufr33 and viperx, the second by @becruily.

Quality metrics are given below. For comparison, the table also provides quality metrics for the old UVR and MDX-B Karaoke algorithms.

MVSep Piano model is based on MDX23C, MelRoformer and SCNet Large architectures. It produces high quality separation for piano and other stems. We provide comparison with other public model (Demucs4HT (6 stems)). Used metrics is SDR - the more the better.

See the results in table below. 

The MVSep Guitar model is based on the MDX23C, Mel Roformer and BSRoformer architectures. The model produces high-quality separation of music into a guitar part (including acoustic and electronic) and everything else. The model was compared with the Demucs4HT model (6 stems) on a guitar validation set. The metric used is SDR: the higher the better.

See the results in the table below.

The MVSep Bass model exists in 3 different variants based on following architectures: HTDemucs4, BS Roformer and SCNet XL. The model produces high-quality separation of music into a bass part and everything else.

Quality metrics

The MVSep Drums model exists in 3 different variants based on following architectures: HTDemucs4, MelRoformer and SCNet. The model produces high-quality separation of music into a drums part and everything else.

Quality metrics

Detailed statistics on Multisong dataset:

The MVSep Strings model is a model based on the MDX23C architecture for separating music into bowed string instruments and everything else. SDR metric: 3.84

The MVSep Wind model produces high-quality separation of music into a wind part and everything else. The MVSep Wind model exists in 2 different variants based on following architectures: MelRoformer and SCNet Large. Wind includes 2 categories of instruments: brass and woodwind. More specific we inluded in wind: flute, saxophone, trumpet, trombone, horn, clarinet, oboe, harmonica, bagpipes, bassoon, tuba, kazoo, piccolo, flugelhorn, ocarina, shakuhachi, melodica, reeds, didgeridoo, mussette, gaida.

Quality metrics

The MVSep Organ model produces high-quality separation of music into an organ part and everything else.

The algorithm restores the quality of audio. Model was proposed in this paper and published on github.

There are 3 models available:
1) MP3 Enhancer (by JusperLee) - it restores MP3 files compressed with bitrate 32 kbps up to 128 kbps. It will not work for files with larger bitrate.
2) Universal Super Resolution (by Lew) - it restore higher frequences for any music
3) Vocals Super Resolution (by Lew) - it restore higher frequences and overall quality for any vocals

Set of different models to remove reverberation effect from music/vocals.

An unique model for removing crowd sounds from music recordings (applause, clapping, whistling, noise, laugh etc.). Current metrics on our internal dataset for quality control:

Examples of how the model works can be found: here и here.

BandIt Plus model for separating tracks into speech, music and effects. The model can be useful for television or film clips. The model was prepared by the authors of the article "A Generalized Bandsplit Neural Network for Cinematic Audio Source Separation" in the repository on GitHub. The model was trained on the Divide and Remaster (DnR) dataset. And at the moment it has the best quality metrics among similar models.

Quality table

Bandit v2 is a model for cinematic audio source separation in 3 stems: speech, music, effects/sfx. It was trained on DnR v3 dataset.

More information in official repository: https://github.com/kwatcharasupat/bandit-v2
Paper: https://arxiv.org/pdf/2407.07275

MVSep DnR v3 is a cinematic model for splitting tracks into 3 stems: music, sfx and speech. It is trained on a huge multilingual dataset DnR v3. The quality metrics on the test data turned out to be better than those of a similar multilingual model Bandit v2. The model is available in 3 variants: based on SCNet, MelBand Roformer architectures, and an ensemble of these two models. See the table below:

The model separates the drum track into 4, 5, or 6 types: 'kick', 'snare', 'cymbals', 'toms'. In the 5-track models, 'hh' is separated from 'cymbals', and in the case of 6 tracks, 'cymbals' is split into 'hh', 'ride', and 'crash'.

A total of 6 models are available:
1) The DrumSep model from the GitHub repository. It was trained on the HDemucs architecture and splitting drums into 4 tracks.
2) A model based on the mdx23c architecture, prepared by @jarredou and @aufr33. The model splits drums into 6 tracks.
3) A model based on the SCNet XL architecture, which splits drums into 5 tracks.
4) A model based on the SCNet XL architecture, which splits drums into 6 tracks.
5) A model based on the SCNet XL architecture, which splits drums into 4 tracks.
6) Ensemble of 4 models (1 MDX23C + 3 SCNet XL)
7) A model based on the MelBand Roformer architecture, which splits drums into 4 tracks.
8) A model based on the MelBand Roformer architecture, which splits drums into 6 tracks.

All models work only with the drum track. If other instruments or vocals are present in the track, the model will not work correctly. Therefore, the algorithm has two modes of operation. In the first (default) mode, the best model for drums, MVSep Drums, is first applied to the track, extracting only the drum part. Then, the DrumSep model is applied. If your track consists only of drums, it makes sense to use the second mode, where the DrumSep model is applied directly to the uploaded audio.

Quality table (SDR metric, higher is better):

Quality table (L1 Freq metric, higher is better):

Quality table (Fullness metric, higher is better):

Quality table (Bleedless metric, higher is better):

@jarredou prepared new DrumSep validation dataset. It consists of 150 small different tracks. 1st part is Drumkits from 001 to 017 (5 tracks for each of these drumkits, with different playing style) are acoustic drums. From 018 to 082 (1 track by drumkit) are electro drums. This dataset is for 5 stems separation of drums: ['kick', 'snare', 'toms', 'hh', 'cymbals']. For 6 stem models 'ride' and 'crash' were sumed up to 'cymbals'. For 4 stem models 'hh' and 'cymbals' were sumed up to 'cymbals'.

Quality table (SDR metric, higher is better):

Quality table (L1 Freq metric, higher is better):

Quality table (Log WMSE metric, higher is better):

Whisper is a pre-trained model for automatic speech recognition (ASR) and speech translation. It has several version. On MVSep we use the largest and the most precise: "Whisper large-v3". The Whisper large-v3 model was trained on several millions hours of audio. It's mulitlingual model and it guesses the language automatically. To apply model to your audio you have 2 options: 
1) "Apply to original file" - it means that whisper model will be applied directly to file you submit
2) "Extract vocals first" - in this case before using whisper, MDX23C model is applied to extract vocals first. It can remove unesessary noise to make output of Whisper better.

More info on model can be found here: https://huggingface.co/openai/whisper-large-v3

Medley Vox is a dataset for testing algorithms for separating multiple singers within a single music track. Also, the authors of Medley Vox proposed a neural network architecture for separating singers. However, unfortunately, they did not publish the weights. Later, their training process was repeated by Cyru5, who trained several models and published the weights in the public domain. Now the trained neural network is available on MVSep. 

MVSep Multichannel BS - this model is prepared for extracting vocals from multichannel sound (5.1, 7.1, etc.). Emphasis on lack of transformation and loss of quality. After processing, the model returns multi-channel audio in the same format in which it was sent to the server with the same sample rate.