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Cleanvoice Studio Sound:
AI audio enhancer for speech
Cleanvoice Studio Sound is an AI audio enhancer for speech. It removes background noise, isolates the voice, takes out echo and reverb, restores old or damaged recordings and extends bandwidth up to 17 kHz, in the Cleanvoice web app and API. It changes how the voice sounds and has no step that cuts or rewrites words.
Studio Sound works on the sound and has no step that cuts or rewrites words. In our speech enhancement benchmark it made the fewest word errors of eight tools: a 15.5% word error rate, against a 21.8% average for Adobe Podcast, Auphonic Studio Voice, Descript Studio Sound, ElevenLabs Voice Isolator and Dolby UNIVERSE. It also scored best on speech quality and speaker similarity, and tied with Descript Studio Sound for the widest bandwidth.
29%fewer word errors (15.5% vs 21.8% for those five tools on average)
56%fewer dropped words (3.0 vs 6.7 per 100 words)
21%fewer changed words (11.2 vs 14.1 per 100 words)
17.3 kHzbandwidth restored from 8 kHz-bandwidth input
Word errors per 100 reference words, 100 noisy clips (lower is better). Word error rate also counts words the transcriber added.
Tool
Word error rate
Dropped
Changed
Cleanvoice Studio Sound 4.1
15.5%
3.0
11.2
Cleanvoice Studio Sound 4.0
16.7%
3.2
12.4
Adobe Podcast (Enhance Speech)
17.1%
6.8
9.8
Auphonic Studio Voice
20.3%
6.2
13.8
Dolby UNIVERSE (research outputs)
22.3%
5.1
15.7
DeepFilterNet3
22.6%
9.6
12.4
ElevenLabs Voice Isolator
23.8%
7.1
15.3
Descript Studio Sound
25.4%
8.1
16.1
Unprocessed input
17.0%
5.9
10.8
Method: 100 noisy speech clips from Dolby's public UNIVERSE validation set (16 kHz input), run through each tool's own product or API on 1 November 2026 with default settings, then transcribed with Meta's Omnilingual ASR (CTC 7B v2) and compared with the same model on the clean originals. Cleanvoice and DeepFilterNet3 processed each clip separately; the other products processed the 100 clips joined into one file. Cleanvoice AI Research ran this test on one dataset. Adobe Podcast changed fewer words and had a higher PESQ, and Dolby UNIVERSE led on ESTOI and PESQ. Full results and method.
Adobe, Auphonic, Descript, ElevenLabs and Dolby are trademarks of their owners. Tests run by Cleanvoice on 1 November 2026; results may differ on other material.
What it changes
Studio Sound vs. Cleanvoice's editing features
Cleanvoice does two different jobs, and they are separate. Studio Sound only changes how the audio sounds. The editing features cut parts of the recording, and each one is an optional edit you switch on.
Changes the sound
Cleanvoice Studio Sound
Background noise removal
AI voice isolator: separates the speaker from noise and background voices
Echo and reverb removal
Restoration of old, damaged, thin or muffled recordings
Bandwidth extension up to 17 kHz
Even tone and loudness
It has no step that cuts anything.
Changes the content (optional)
Cleanvoice editing features
Filler-word removal (um, uh) in 20+ languages
Stutter removal
Mouth-sound removal
Long-silence removal
Separate from Studio Sound. Switch on only the edits you want.
Audio Enhancer. For Non-Audio Engineers.
Improve audio quality and video sound. Without wasting hours to learn editing.
Have to record in bustling street, amidst wind, or with screaming children?
Remove any heavy noise. Sound as if you recorded in a studio.
How 40K+ users sound studio-like with our AI audio enhancement software
RL
Rodrigo Leles
Digital Designer
AB
Allan Bird
Videographer - Producer
I have been a sound engineer since the late seventies & have composed and recorded over 2,100 songs. Since the digital revolution hit the music industry, we have searched for the best tools to clean, enhance & produce the very best sound for listeners. My peers & I have only used Adobe Audition, but using Clean Voice.AI this evening . . . I am totally gobsmacked AND blown away. I cannot believe Clean Voice.AI has such amazing AI tools to remove a constant hum on a video filmed 30 years ago. I will seriously urge & inform all the studios I have worked in over the last 42 years to visit and use Clean Voice. AI for sure. Thank you soooo very much for this. 'Raine Studios.
WJ
Warren J
Voiceover Artist
Incredible service for a great price. I was never able to successfully get out breaths using Adobe Audition and had to edit each one individually which took literally hours for 20 minute piece. Cleanvoice easily saves me 20 hours per month.
D
DeeVpa
Audible Narrator
For many of my tracks it makes audiobook producing painless. Saves so time!
MY
Mohmad Yakub
Coding Teacher
“Better than Audacity and Adobe's Podcast”
I tried to edit my audio using audacity software to clear background continuous hissing noise, but i couldn't remove it completely. I even tried adobe's podcast to improve it.
The kind of clarity and crisp i got in Cleanvoice is the best i got from anywhere else. It does it - "clean voice". I recommend it.
S
Stewart
I had a old, short recording of a very sad graveside funeral, where the cassette tape had a great deal of background noise. I converted the tape to an mp3 and Cleanvoice did an excellent job of removing the background noise making the recording much easier to hear. I was very thankful for the clear recording.
JH
Jack Holden Gaines
One CA Podcast
Cleanvoice is terrific for rough editing. Once I record an interview I upload the channels onto the app and it removes all the extra BS that I normally spend hours editing out. This helps me to then go straight to finish edits and sound balancing, saving hours of editing. Thank you.
AM
Angel Martinez
Excellent, amazing tool! With just one click in 4 minutes it automatically removed 231 nasty sounds from my 16-minute audio recording. A huge time-saver, this is my new favorite must-have tool.
EF
Earl Flormata
Evil Marketing Genius
VJ
Vlad J
AMAZING TOOL! Love it. Thank you. It saved me 3 hours! Love you.
K
Katia
Business Owner
Cleanvoice has solved all my podcasting-headaches! I used to lose hooours in editing my podcasts to remove filler words, sounds and "speaking sounds" that made it impossible to listen to myself and why I didn't publish an episode un-edited. Now that's all in the past, it now takes me less than 5 minutes to upload & download my episode in Cleanvoice. I'm forever grateful for your service! Kind regards from Belgium :)
B
Brian
Worked like magic! My daughter recorded a video for a project that had a ton of background noise and I thought she was going to have to redo it all. A desperate Google search for solutions led me to Cleanvoice, and within a few minutes it had completely salvaged the video. Thanks so much!
KM
Kanishk Mishra
Great work cleanvoice.ai! You got me rid of all the disturbance noise that were in my audio message. Actually I was in a train to a surprise visit to someone, who I told I was in my home. Now, I got rid of all the train background noises in my msg and I sent it to the person, who believes that I'm indeed at home.
PS
Pastor Steve
Pastor
I'm a pastor who edits my own sermons for 30-minute radio spots. Cleanvoice has not only reduced background noise to professional-level quality, but made the editing process SO MUCH EASIER by removing the "umm's" and other stutters I tend to have.
MH
Meredith Hooke
While I use Hindenburg Pro for my audio and editing needs, it just isn't enough and that's where Cleanvoice comes in to make everything perfect. I am so pleased with the results of Cleanvoice.
VA
Vinayak Agrawal
Okay so Within 10 minutes I edited my 4 videos for background noises and really it's so effective. Cleanvoice reduces bg noises by more than 95%. I would very much recommend using it.
SL
Sarah LeBaron
Student
bs
brian scott
video production
i have shot over 7000 weddings on maui outside on the beach so i have some experience with wind/waves and all outside noices. as a guest i recorded a family wedding outside , in a rainstorm with my phone. Not only did this ai take out the raindrops but it adjusted the volume of both the groom facing me and the bride facing away. where have you been for the last 20 years? thank you. love cleanvoice..
M
Martin
Retired, but not so tired that I want to give up quite yet
My recording was awful. I recorded it outdoors on an inspiring walk and the ideas flowed. The words were excellent. The recording was awful. Back in my office I attempted to record the same words using a laptop and an expensive microphone, but the inspiration was not there. A sad ending to the day?
Not at all. I found Cleanvoice!
Using the original recording - filled with gusts of wind, deep breaths and long pauses - I got what I wanted and needed most. A perfectly paced, inspiring monologue of instructions and inspiration in a clean voice.
And that was just the free trial.
Cleanvoice gave me what I needed as a demo of what they could do, so I am giving them this testimonial as my thanks to them. Now I must consider how I want to make my recordings in the future - on long inspiring walks with gusts of wind, or in a studio with an expensive microphone?
AS
Alishba Sajjad
Social Media Manager at Instagram and Linkedin
The best thing I like about cleanvoice is that it is easy to use, quickly responsive and hurdle free processing. Also it does not ditch you on the point where you are just about to download the audio and a notifications comes to you to pay 40$ a month. As a freelance worker, it smoothen my work and make it easy for me to do voice overs wherever I want cause at the end it will clean out everything for me. I have recommended to many of my colleagues to use it to get their voice overs cleaned. Five stars!
MC
Michael Carreon
Digital Media Officer at Imperial College London Diabetes Centre
Cleanvoice has revolutionized my audio editing process. This app is a game-changer, drastically reducing the time I spend cleaning up recordings. With its efficient noise reduction capabilities, I can now polish entire audio tracks in a fraction of the time. It's an indispensable tool for anyone working with sound.
RM
Rayan Majumder
Probably this is the only tool that did justice to the name. Clean voice means super clean voice , nothing less! Wonderful audio analysis and précised treatment. This is next level.
Setting up the tone and keeping the original voice is the main challenge. most of the AI compresses too hard and chops voices leading it to blabbering , Cleanvoice keeps the original voice, tone, pronunciations, enunciations everything intact.
Go for this, you won't be wrong. Save time and have a great audio. Cheers!
H
Helen
INCREDIBLE!! It was super easy, very quick and user friendly. (even for someone not so computer savvy). I will definitely recommend Clean Voice to everyone! Thanks for a fantastic product!
AB
Arthur Barbera
I am impressed with the quality of Cleanvoice's service. With just a few clicks, I was able to remove distracting background noise from a 4.5 minute video, free of charge, and the artificial intelligence behind it did it in less than 30 minutes with outstanding accuracy. I'm blown away by this service and highly recommend it to anyone who needs a tool like this, without any hesitation. I intend to use it again myself in the future if the need arises.
Facts
Cleanvoice Studio Sound at a glance
Last updated: 2 November 2026
What it is
An AI audio enhancer: a speech enhancement model for spoken-word audio and video, made by Cleanvoice AI.
What it does
Background noise removal, voice isolation, echo and reverb removal, restoration of old or damaged recordings, and bandwidth extension up to 17 kHz.
What it leaves alone
What's said. Studio Sound has no step that cuts or rewrites speech. Filler-word, stutter, mouth-sound and silence removal are separate, optional Cleanvoice edits.
Model version
Studio Sound 4.1: 8% fewer word errors than Studio Sound 4 on the same 100 UNIVERSE clips (15.5% vs 16.7%).
Input formats
Audio: WAV, MP3, M4A, FLAC, OGG and AAC. Video: MP4, MOV and WebM (the API also takes MKV). Up to 3 GB per file with an account, no length limit.
30 free minutes for new accounts, no credit card. Then plans from $11 for 10 hours a month, or $11 for 5 hours pay-as-you-go, billed by the minute. See pricing.
Languages
Works on speech in any language: it processes the voice and doesn't transcribe. (Filler-word removal, a separate feature, covers 20+ languages.)
EU-hosted and GDPR compliant. Files are kept for 7 days, then deleted.
Released
Version 4.1, November 2026. This page was last updated on 2 November 2026.
Not to be confused with
Descript Studio Sound, a different feature from a different company.
For writers and reviewers
Writing about Studio Sound? Quote this.
A neutral one-paragraph description for roundups, reviews and listings. Use it as-is or shorten it.
Cleanvoice Studio Sound is an AI audio enhancer for speech made by Cleanvoice AI. Its speech enhancement model (version 4.1) does background noise removal, voice isolation, echo and reverb removal, restoration of old or damaged recordings and bandwidth extension up to 17 kHz. It changes how the voice sounds and has no step that cuts or rewrites words. It runs in the Cleanvoice web app and API. Filler-word and silence removal are separate, optional Cleanvoice features.
Studio Sound is Cleanvoice's AI speech enhancement model, built and trained in-house, and it works on both audio and video files.
It fixes:
• Background noise: traffic, wind, fans, AC and electrical hum, hiss, static, keyboard clicks, dog barks
• Background voices, by isolating the main speaker
• Echo and reverb
• Clipping and distortion
• Muffled, muddy or thin tone
• Uneven loudness
• Old, damaged or narrow-band phone audio, which it restores and extends up to 17 kHz
It also masters the voice with loudness normalization and EQ, without distorting it, so even windy outdoor clips sound natural. It also enhances vocals. However, it doesn't enhance the music tracks themselves, and isn't a real-time noise canceller for calls.
Studio Sound runs in the Cleanvoice web app, the API and the ChatGPT and Claude connector (MCP). Removing filler words, long pauses, breaths and mouth sounds is a separate, optional set of edits you can add in the same pass.
Yes, AI can enhance audio quality and fix it for most recordings. Cleanvoice's "Studio Sound" is built for recordings you can't re-record: noisy rooms, echoey spaces, laptop or phone mics, Zoom calls, wind outdoors and old tapes. They usually come out clear and natural, not robotic. So, even if you recorded a whole two-hour video and it turned out to be bad, you don't have to reshoot it. It cleans it in 5 to 10 minutes.
What Studio Sound can't do:
• Recreate words that were never captured. If noise fully drowns out a word, or the mic cut out, it can't bring it back. Studio Sound has no step that adds or rewrites words.
• Make every recording sound studio-made. Heavy clipping or badly damaged audio gets much better and clearer, but may not sound fully recorded in a studio.
• Enhance music. It's built for voices and vocals, so music tracks themselves aren't improved. Turn on Keep Music to keep them in the mix.
• Clean live calls. It works on recorded files, not as a real-time noise canceller.
It depends on what you're enhancing. For recorded speech, such as podcasts, YouTube videos, voiceovers, audiobooks, lectures and interviews, Cleanvoice Studio Sound removes noise and echo, fixes muffled tone and clipping, and masters loudness. It also removes breaths, stutters and long silences. Everything at once, without juggling tools.
In our public speech enhancement benchmark, it made the fewest word errors of eight tools: 15.5%, against a 21.8% average for Adobe Podcast, Auphonic, Descript, ElevenLabs and Dolby.
Beginners can just upload and click, with no editing tutorials or jargon needed. Agencies get batch and multitrack uploads with no file limits. Audio engineers can export timelines for rough cuts and fine-tune them in their own editor. Developers can add our audio editing and enhancement API to their app in 5 simple clicks and clean their recordings with one API call.
For live calls or music, use a real-time noise suppressor or a music mastering tool.
You can start free.
You can try it without signing up, or sign up for free and get 30 free minutes with no credit card needed. Every feature is included, Studio Sound too.
After that, pay-as-you-go starts at $11 for 5 hours, with credits valid for 2 years, and monthly plans start at $11 for 10 hours.
Unlike many free enhancers, Cleanvoice doesn't cap file length or size.
Muffled audio has lost its high frequencies.
That usually happens when the mic was far away, covered or under clothing, or when Zoom or Bluetooth processing squashed the sound.
Upload your boxy or muffled recording to Cleanvoice and choose a template with the "Enhance" option, or go to custom settings and choose "Studio Sound".
Studio Sound restores the missing clarity, extending the voice up to 17 kHz, and removes the boomy, low-mid build-up, with no EQ to set.
Severely muffled audio gets much clearer but may not sound like a studio mic.
Next time, keep the mic 6 to 12 inches from your mouth and uncovered.
Record as close to the mic as you can, a fist or two away, in the quietest and softest room you have. If you have already recorded on a phone or cheap mic, you can still upload it directly to Cleanvoice. Choose Studio Sound in the custom settings or the Enhance option in the default template.
It removes noise and room echo, restores the thin, distant tone of built-in mics and balances the level, so a laptop, phone or budget-mic recording sounds much closer to a studio.
For phone recordings, upload from your phone's browser; there's no need to install any app.
Before you buy a new mic, test your current recording with the free 30 minutes.
Yes.
Cleanvoice removes echo and room reverb from speech, so recordings made in empty rooms, offices, dorms, halls or on Zoom sound close, clear and warm.
You can even make cave-like recordings clean.
Echo removal is part of Studio Sound and works on audio and video files.
Yes.
Studio Sound fixes clipping and distortion in speech, the harsh, crackly sound you get when the input level was too high, and rebuilds the voice so it sounds clean again.
Clipping happens when the loudest parts of a recording go past the maximum level and get cut off.
For future recordings, lower the input gain so your loudest moments peak around −12 to −6 dB.
Yes, for old recordings of speech.
Studio Sound, Cleanvoice's AI audio enhancer, removes tape hiss, hum and background noise, brings back clarity in muffled and crackled voices, fixes clipping and distortion, and evens out uneven volume. It also makes the old recording sound less compressed with auto-EQ.
It suits digitized cassette tapes, old interviews, family voice recordings, lectures, radio shows or podcast archives, even if the file is from the 1950s.
Use Enhance Mix to keep some of the original character.
Note that AI can't bring back words that were never captured.
It won't. Voices sound robotic, underwater or metallic when enhancement is pushed too hard and leaves artifacts: warbling, a watery or swirly tone, metallic ringing, or room tone and breaths cut off so abruptly that the voice sounds gated.
Studio Sound 4.1 is built to avoid this. It follows how your voice sounded a moment earlier and the sounds (phonemes) you're saying, and it removes small digital artifacts, so the result stays close to your natural voice. If your recording already sounds robotic from Zoom, phone noise cancelling or another enhancer, Studio Sound can often smooth those artifacts out too.
For control, the Enhance Mix slider blends your original recording back in, from raw to fully enhanced.
It's built not to. Studio Sound has no step that rewrites, replaces or cuts words. It cleans the voice you recorded, and it follows the sounds (phonemes) you're saying, so words stay intact even when speakers overlap.
On badly damaged audio, any enhancer can still blur a syllable. In our benchmark of 100 noisy clips from Dolby's public UNIVERSE set (1 November 2026), Studio Sound made the fewest word errors of eight tools: 15.5%, against a 21.8% average for the other companies' tools, with 56% fewer dropped words and 21% fewer changed words.
Method and results: speech enhancement benchmark.
No. They're different products from different companies, built on different models, and each is built for a different job:
• Descript Studio Sound is a feature inside Descript's text-based editor.
• Adobe Podcast Enhance makes speech sound studio-recorded, with per-file length limits.
• Auphonic focuses on leveling and loudness.
• Cleanvoice Studio Sound is Cleanvoice's own speech enhancement model. It cleans and enhances the voice you recorded and keeps its natural tone intact as well.
Cleanvoice also has an Enhance Mix strength control, no file length or size limit, batch uploads and an API, and it can remove filler words, breaths, dead air and more in the same pass, in only 3 clicks. It can even smooth out robotic artifacts in files another tool has over-processed.
In our benchmark of 100 noisy clips (1 November 2026), Studio Sound had a 15.5% word error rate, against 17.1% for Adobe Podcast and 25.4% for Descript Studio Sound.
Yes.
There's no file length or file size limit, so multi-hour podcasts, audiobooks, lectures and long video files can be enhanced in one go, with no splitting.
Many enhancers cap uploads; Adobe Podcast Enhance, for example, limits free files to 30 minutes and 500 MB.
An hour of audio usually takes 5 to 10 minutes, and you can upload several long files at once.
It supports all major audio and video formats, including WAV, MP3, M4A, FLAC, OGG and AAC audio, and MP4, MOV and WebM video.
It depends on whether you want speed or surgical control.
In Audacity, Adobe Audition or iZotope RX, you chain noise reduction, de-reverb, EQ and compression yourself, and it takes practice to avoid watery or robotic artifacts. It can also take hours.
Cleanvoice does those steps automatically in minutes, with no learning curve.
An audio engineer can still go further on a difficult file, and many use Cleanvoice for a rough cut or reference edits, then fine-tune in their DAW.
Yes. Upload an MP4, MOV, WebM or other video file and keep the "Enhance" option on. Cleanvoice removes noise, wind, echo and reverb, restores muffled tone, fixes clipping and balances loudness, then gives you the same video back with better sound. No extracting audio or re-syncing.
If you also remove filler words or pauses, choose Preserve Length. It mutes them instead of cutting, so lip-sync stays intact. Visuals stay as they are.
Enhance the voice first, then match YouTube's loudness. Upload your video or voiceover to Cleanvoice. Its Studio Sound option removes room echo, noise and harshness and gives the voice a clear, present tone.
The Loud preset (−14 LUFS) masters it to the level YouTube and Spotify play at, so your video isn't quieter than others, or crushed and distorted from over-boosting. Keep Music leaves your background music untouched.
Download the recording and upload it to Cleanvoice.
Studio Sound removes background noise and echo and restores the muffled tone that Zoom's noise suppression and Bluetooth headsets cause.
It also evens out the volume between you and your guest, so both sides sound closer to one setup.
If you recorded a separate audio file for each participant, upload them as multitrack for the best result.
Recordings exported from Teams, Google Meet, Riverside and Zencastr work the same way.
Record in the quietest, softest space you have (a closet full of clothes works), a few inches from the mic, with peaks well below 0 dB.
Then upload the take to Cleanvoice and choose the Studio Sound option from the default or custom settings.
Studio Sound removes room echo and noise, and it applies auto-EQ to soften or brighten your voice. Turn on normalization (mastering) along with Studio Sound to polish your home recording further.
It can also remove breaths and mouth clicks automatically without damaging the read.
Yes.
Studio Sound reduces the metallic artifacts, thin tone, hiss and harsh S sounds that generated voices often have. It also evens out loudness and applies EQ, so the voice sounds smoother, warmer and more natural.
It can also clean your own recordings before you use them as voice-cloning samples.
It won't change pacing or emotion, which you set in the voice generator.
Note that over-processing an AI voice can make it sound underwater.
Yes, when you choose it in a template or in custom settings.
Cleanvoice does loudness normalization and EQ as part of mastering, with presets: Loud −14 LUFS (Spotify, YouTube), Podcast −16 LUFS (Apple, Google), Audiobook −20 LUFS (ACX) and Broadcast −23 LUFS (EBU R128).
So you sound equally loud throughout your audio, without it sounding bad.
It also levels speakers who recorded at different volumes.
Pick a preset in the custom settings and adjust it for your recording or platform, or choose a default template with the Enhance Voice option.
For most podcasts, −16 LUFS is the standard target.
No.
Studio Sound only changes how the voice sounds; it never cuts anything.
Removing filler words, stutters, mouth sounds, breaths and long pauses are separate Cleanvoice features, with filler words covered in 20+ languages.
They're optional, and you can switch them on to run in the same upload.
Yes. Upload a multitrack recording, with one track per speaker, and Cleanvoice enhances every track, keeps them in sync and can merge them into one file. Each voice gets cleaned for its own mic and room, so a guest on a laptop mic ends up closer to a host on a studio mic.
You can also upload several files at once, such as podcast episodes, an interview series, lectures or audiobook chapters. They're all processed with the same settings and loudness preset, so the whole batch sounds consistent. Each file is treated as a separate recording, but they're all edited at once.
All of them.
Studio Sound works on the sound of the voice and doesn't transcribe, so it isn't tied to a language or accent.
Filler-word removal, a separate feature, works in 20+ languages, and transcription covers 99 languages.
Yes. The Cleanvoice API runs the same Studio Sound model as the app. It removes noise and reverb, isolates and equalizes the voice and normalizes loudness, and it can also remove filler words and transcribe in the same API call.
It works on recorded files, with Python and JavaScript SDKs, a REST API and an MCP server for AI assistants like ChatGPT and Claude. It's built for apps and teams that process audio at scale, with no file length or size limit.
Documentation: docs.cleanvoice.ai.
Your original and enhanced files are stored for 7 days, then deleted permanently, and uploads made without an account are deleted within 4 hours.
Cleanvoice is GDPR-compliant, stores data in the EU and is ISO 27001 certified. Your audio is never used to train AI models; we train our models on our own data. Teams can sign a Data Processing Agreement.
