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24/08/2026 7:05 pm
Hey everyone! Starting this thread because I'm currently producing an AI-assisted album and hit a critical crossroads...
I've been using Suno v4 for a couple of months and the musical creativity, chord progressions, and song structuring are unbeatable. But there's one persistent challenge: high frequencies around 10-12kHz and vocal sibilance (the 'S' and 'T' consonants).
In some generations the voice can sound a bit harsh or compressed, like an MP3 encoded at low bitrates. When I export stems to mix vocals in FL Studio and apply a De-Esser, native stem separation sometimes leaves watery phase artifacts in the background lol 😂
How do you handle this? Do you switch to Udio for pure vocals, or do you have a go-to DAW plugin chain (EQ / De-Esser / Saturation) to polish the Suno master?
24/08/2026 7:20 pm
Totally agree with SynthMaster! I've been a vocalist for 10 years, and raw AI stems can definitely be harsh on sibilants initially 🙈
The trick isn't just slapping on a standard De-Esser though! Here's my DAW chain:
1. Dynamic EQ (like FabFilter Pro-Q3): make surgical dynamic cuts around 3.2kHz and 11kHz where AI artifacts typically gather.
2. Audio restoration plugin: iZotope RX Spectral De-noise or De-Clipper to smooth out harsh transients.
3. Subtle analog tube saturator: restore body to mid frequencies that stem separation tends to hollow out.
With this chain, the vocal sits naturally in the mix even on studio monitors!
24/08/2026 7:21 pm
Hey Riky! Speaking candidly: Udio is still slightly ahead in pure audio fidelity and vocal clarity, especially regarding cymbal air and frequency response above 10kHz.
HOWEVER... Udio can be much more tedious when arranging full songs with cohesive pop song structures; it can take hours to assemble a 3-minute track. Suno v4, on the other hand, feels effortlessly musical and emotive out of the box.
Quick question regarding the harshness: are you exporting in MP3 or WAV? If you're on Pro, exporting 24-bit WAV makes a noticeable difference in dynamic headroom!
24/08/2026 7:51 pm
Sorry to jump in, but the real bottleneck in my opinion isn't the sibilance—it's Suno's native server-side stem separation algorithm when downloading separate tracks 😅
If you click 'Get Stems' on Suno, you'll almost always get audible phase artifacts in cymbals and vocals.
My workflow is:
Download the FULL stereo song in 24-bit WAV from Suno. Then process that WAV through Ultimate Vocal Remover (UVR5) locally on PC using the VR Architecture or Roformer models.
Result? Vocals and instrumental stems separated with 99% clarity and zero watery phase noise!
Topic starter
24/08/2026 8:02 pm
@Giova_Mix Great advice Giova, that was exactly my mistake! I was pushing the limiter in Logic like I do on my standard stems and it was crunching. Backed off the gain to hit -14 LUFS... now it punches cleanly without grating.
Super helpful discussion everyone! Sticking with Suno and refining the DAW mastering chain! 🚀🎶
Topic starter
24/08/2026 8:17 pm
NO WAY! 🤯 Just ran UVR5 with the Roformer model on a track that was giving me headaches... NIGHT AND DAY DIFFERENCE! The vocal came out crystal clear, no more phase underwater sound on the drum cymbals!!
Why doesn't Suno incorporate a Roformer-tier model directly instead of their lightweight separator? 😂
@Laura_Singer thanks for the 3.2kHz dynamic EQ tip as well, combining both techniques made the track sound studio-grade!
24/08/2026 8:43 pm
Haha glad it helped! Suno uses lightweight stem models on their servers because otherwise their infrastructure would bottleneck whenever thousands of creators click 'Get Stems' simultaneously lol.
Golden rule for mastering AI songs: never push your Limiter / Maximizer too hard! AI-generated songs are already heavily compressed dynamically. If you drive them +3dB into a limiter, you end up with brickwalled distortion. Aim for -14 LUFS integrated for Spotify and your track will sound open and punchy! 😉👍