Bird sounds
- Google's bird_mixit (code & checkpoint for their bird sound separation algo; more)
De-reverb models, e.g.:
- UVR-DeEcho-DeReverb (doesn't work for all songs)
Vocal models, e.g.:
- MVSEP BS-Roformer 2025.07 (if you already have birds in a vocal stem, as most vocal models do iirc, that may do the trick)
SFX models
Zero shot solutions:
(you can try them to get e.g. birds SFX and then use as a source to debleed or maybe try to invert phase and cancel it out)
- AudioSep
- USS-ByteDance (for providing any, at least, proper sample)
- Zero Shot (currently worse for SFX vs Bytedance)
- custom stem separation on Dango (paid, 10 seconds for free
Technically, if bird noises are in vocals, then equally:
- RTX Voice,
- AMD Noise Suppression or even
- Krisp and
- Adobe Podcast
might get rid of them, but at least the last changes the tone of voice, and the previous may work good only with voice instead of vocals.
Spectral editing
De-clippping/de-limitter/de-compression of dynamics (for loud or brickwalled songs/sounds with overly used compressor/clipper/limiter/distortion - transients/peaks recovery)
- becruily’s delimit (Colab) “A model for delimiting songs. It properly restores the waveform/volume of the audio, rather than just declipping the drums. Make sure to either export at 32bit float (important if using UVR) or decrease the volume of the track by -12db before processing.
Note: This isn't a declipper to remove distortion. Maybe it will work too, most likely not.”
Comparison with de-limiter by jeonchangbin49 shows more transients recovered, making it much closer to the original file before limiting.
“It seems that mainly high end is retrieved a lot, the bass and kick drums seem to have been hit the most that the model struggled to retrieve.
The peaks you see [example] are snare hits, they are punchy and have a lot of reverb on them, the limiter compresses it and equals the volume out so the snare/reverb isn't overpowering the rest, you can even see in the waveform that the becruily model struggled to retrieve the punchiness of the snares, it's especially noticeable when listening too.
The other instruments such as guitars are actually restored quite well to my ears, especially compared to the bass guitar and drums.” - isling
- jeonchangbin49’s De-limiter (HF | Colab) (“if you have any squished tracks that Apollo doesn't handle well, try passing it through that AI de-limiter first” - macularguide
“I get less distortion on vocals if I delimited first on a loud mix” - 5b
“this is amazing, it worked wonders for me” [for mixture de-limitting/de-compression, waveforms] - straturkoise
Parameters: “parallel mix - “defines how the normalized input and the de-limited inference will blend together. Where 0 is 100% normalized and 1 means 100% de-limited” - santilli_
For Colab don’t provide the file name in the input field, leave just directory as it was, it will scan its content)
- Ozone’s 12 Delimiter (waveforms) - paid, works also for mixtures, adjustable parameters
Free de-clipper AI tools (not plugins)
- introC’s BetterDeclipper - better than paid ProAudioDeclipper (at least in one example). Requirements:
pip install numpy scipy soundfile torch
Usage:
python -m betterdeclipper input.wav output.wav
More options explained in the readme or here.
- RemFX (contains model to get rid of distortion and compression; “mostly for singular sounds, it won't work for whole mixes like songs”)
- Rukai (for speech and instrumentals)
- Amis (mainly for speech)
- stet-stet’s DDD (speech, req. decent CML knowledge to setup)
- Hendrix-ZT2 pyaudiorestoration’s Spectral Expander - for single band compression or aggressive tape AGC (more)
- cathar by vbasky (free, CML; it has many other tools)
More GH repos - HyMPS list | #2
Free de-clipper plugins:
- ReLife 1.42 by Terry West (works best for stereo tracks divided into mono, newer versions are paid)
- ERA 6 declipper (released in bundle for free after they were bought by Meta)
- Airwindows AQuickVoiceClip - mainly for streamers yelling into the microphone “It’s not a ‘un-clipper’ but it tames the distortion a bit.”
Paid de-clipper plugins:
Acon DeClip, ProAudioDeclipper, Declipper in Thimeo Stereo Tool (a.k.a. Perfect Declipper - standalone; both free for Winamp), iZotope RX De-clip (in RX Editor or as plugin), Pure D compressor by Flux Audio, HMD Uncompressor, FX Factory De-Clipper, DxRevive Pro (mainly for dialogue, also denoiser, dereverb, enhancer, codecs artefacts removal), Declipper in Magix/Sound Forge Cleaning Lab (probably the same with mix/dry slider is in Boris FX Sequoia), Adobe Audition’s Declipper, sometimes even Fabfilter Pro-MB multiband compressor might be useful
See comparison
Clippers (the opposite, but useful in the whole mastering chain, sometimes in a tandem with the above in the whole chain):
Free
- KClip Zero
- FreeClip (sometimes you can use both in the same session for interesting results)
- GClip
- Limiter6 by vladg (Clipper module)
- Initial Clipper
- Airwindows Hypersoft - “a more extreme form of soft-clipper”
- Airwindows OneCornerClip - compared to OG ADClip, it retains the character of sound
- Airwindows ADClip8 - “loudenator/biggenator”
- Airwindows ClipOnly - “2-buss safety clipper at -0.2dB with powerful anti-glare processing.”
- Hornet Magnus Lite - clipper and limiter modules
- Razor Clip
- Kilohearts Clipper
- FClipper - DL
- Neutone FX>Clipper, actually an AI plugin (instruction), can be more resource-hungry
Paid ones
De-expliciter (removes explicit lyrics from songs)
https://github.com/tejasramdas/CleanBeats (more recent fork)