Audio enhancer
FixesNoiseEchoMuffled soundDistortion
Make any recording sound studio-quality with Audo's AI voice enhancer.
10M+ files processed since 2021
From subtle to full.
More options
Free for the first minute, 3 times a day. No sign-up.
Made for voices. Music and other sounds are removed too.
Hear the difference
Play Original, then Enhanced.
Enhanced fixes the muffled sound and noise.
Made with Audio enhancer
Works in any language
- Hello
- こんにちは
- Hola
- 안녕하세요
- Bonjour
- नमस्ते
- Hallo
- 你好
- Ciao
- مرحبا
- Olá
- Привет
- Hoi
- สวัสดี
- Merhaba
- Γεια σας
- Xin chào
- שלום
- வணக்கம்
- Kia ora
How to improve audio quality
- 1
Add an audio recording or a video file.
- 2
Keep Strength at Full to rebuild the voice, or slide toward Subtle to blend your original sound back in.
- 3
Listen to the before and after, then download the enhanced file.
What recordings the audio enhancer fixes
Each pass repairs the mic, room, and compression flaws people most often need to clean up.
Voice & mic enhancer
Turn phone voice memos and budget mics into studio sound
Laptop microphones, USB headsets, AirPods, and iPhone Voice Memos often sound thin and flat. Audo's microphone enhancer restores warm low-end body and crisp close-mic presence without extra gear — see how to make a phone recording sound like a studio.
Speech & clarity enhancer
Fix muffled, distant, or echoey speech in one pass
When a speaker sits far from the mic in a bare room, classroom, or conference room, echo, background noise, and muddiness stack together. The speech enhancer strips the room ring and pulls every word forward so dialogue is clear and easy to follow.
Video audio enhancer
Enhance voice audio in MP4, MOV, and iPhone videos
Upload MP4, MOV, MKV, WebM, AVI videos up to 10 GB directly from your computer or phone. Audo works as a video voice enhancer that cleans and levels the spoken track and returns the exact same video, picture untouched.
MP3 & podcast enhancer
Restore compressed MP3s and full-length podcast episodes
Low-bitrate MP3s, narrow phone calls, and remote interviews often suffer from harsh compression and uneven volume. Audo smooths digital artifacts, sets a steady podcast loudness, and processes files up to 10 hours long when signed in — with no 30-minute limit like Adobe Podcast Enhance.
How it improves audio quality
Audo's AI audio enhancer and sound enhancer takes audio (WAV, MP3, M4A, AAC, FLAC, OGG, Opus, WebM, AIFF) and video (MP4, MOV, MKV, WebM, AVI), up to 10 GB without an account, and the first minute of each file is free, 3 times a day, with no sign-up. One minute of audio usually takes about 11 seconds, and a 20-minute recording about 45 seconds.
Unlike a standard noise filter or equalizer that only carves frequencies out, Audio enhancer rebuilds the spoken voice. That is why the real recordings in the player above — a narrow phone call, a podcast on a cheap mic, a lecture hall, a windy backyard, and a walkie-talkie — come back full and clear even when the original sound was clipped or hollow.
When your microphone already sounds good and you only want one specific problem removed, pick a dedicated tool below instead: Remove noise for steady background noise, Remove echo for a ringing room, Voice isolator for loud music or crowd chatter behind speech, or Audio leveler when two speakers sit at different volumes (see how noise-reduction and voice-rebuilding tools compare). Once the voice is clean, Interview transcription turns the recording into a speaker-labeled transcript.
| Recording problem | What changes in the sound | Best tool |
|---|---|---|
| Cheap mic, muffled speech, or noise and echo together | Rebuilds voice tone, strips noise and room echo, and levels loudness | Audio enhancer (Strength 50–100%) |
| Good mic with steady fan, AC, wind, or street noise | Removes background noise and keeps the natural voice tone | Remove noise |
| Room echo or hall reverb on an otherwise clear mic | Takes out room reflections bouncing off bare walls and glass | Remove echo |
| Loud music, café songs, or crowd chatter behind speech | Separates the speaking voice from background music or crowd noise | Voice isolator |
| One speaker much quieter than another in the same file | Brings loud and quiet speakers to one steady podcast volume | Audio leveler |
Questions
Is there a free audio enhancer?
Yes. Audo's AI audio enhancer is free for the first minute of each file, 3 times a day, with no sign-up. Whole recordings run $0.05 a minute ($3.00 an hour), with no subscription — see pricing.
Will it make my voice sound robotic?
At full strength it can sound a little different from the original, because it rebuilds the voice rather than only filtering it. To keep more of your own natural tone, turn Strength from Full toward Subtle: it blends some of the original recording back in.
What if I only want background noise or chatter removed, without changing my voice?
Use Voice isolator or Remove noise instead. Audio enhancer rebuilds the voice to fix echo and muffled sound, while Voice isolator only strips out background noise, music, and chatter and keeps your voice untouched.
Can I use it as a vocal enhancer for singing or music?
It works as a vocal enhancer for spoken voiceovers, podcasts, and dialogue, not singing. Because it is built for speech, singing and instruments are removed. To strip background music behind someone speaking while keeping their natural voice, use Remove music from video.
How do I improve the sound of an iPhone video or Voice Memo?
Open this page in Safari on your iPhone, add your MOV video or M4A Voice Memo, and download the enhanced file. On video, the picture stays exactly as it was. Files up to 10 GB work without an account, and up to 10 hours when signed in.
Which languages does it work in?
Every language: it improves how a speaking voice sounds, whatever words are said.
More tools
- Remove noiseClears the background, keeps your voice.
- Remove echoMake voices sound close.
- Vocal removerSeparate vocals, music, and stems.
- Stem splitterSplit vocals, drums, and bass.
- Karaoke makerRemove vocals, keep the music.
- Change pitchMove the key up or down.
- Change speedSpeed up or slow down audio.
- Key and BPMFind a song's key and tempo.
- Transcribe audioSpeech to text, who said what.
- Text to SRTSync a script to audio.
For AI assistants and developers
Ask ChatGPT, Claude, or a coding agent to do this for you, or call it from your own code. When an agent's free result is cut short, it gives you a link to finish the whole file, no sign-up.
Show the free API call
curl -F file=@voice-note.m4a https://audo.ai/api/try/enhance-voice -D response.headers -o response.body