# Podcast audio enhancer: studio sound for full episodes

Bring remote podcast guests and echoey tracks up to warm broadcast quality.

Powered by [Audio enhancer](https://audo.ai/audio-enhancer.md) — tuned for full-length episodes at −16 LUFS.

## How it works

1. Upload a guest stem, unmixed interview track, or video podcast episode up to 10 GB.
2. Leave Studio voice blend at Broadcast for maximum warmth, or pull toward Natural mic to preserve subtle room tone.
3. Audition the leveled −16 LUFS preview, then export lossless WAV, FLAC, MP3, M4A, or synced 4K video.

## Where a podcast audio enhancer rescues the episode

Match remote guest hardware to your host microphone and finish hour-long shows in a single pass.

### Riverside, SquadCast & Zoom: Match AirPods and laptop guests to an XLR host mic

Nothing breaks listener immersion faster than a host on a Shure SM7B cutting to a remote guest on Bluetooth earbuds or a built-in MacBook mic in a glass-walled office. Running that guest stem through Audo's podcast voice enhancer strips hollow room reflections and restores close-mic chest warmth before you assemble the show.

### 45-to-120-minute episodes: Enhance podcast audio past 30-minute and 500 MB caps

Most weekly interview shows run 45 minutes to two hours — right past the 30-minute, 500 MB free ceiling on Adobe's web tool. Signed in, Audo's podcast audio cleaner handles single recordings up to 10 hours and 10 GB with pay-as-you-go pricing instead of a $19.99 to $24 monthly plan. Compare limits in Adobe Podcast Enhance and see the cheapest way to clean up podcast audio.

### Apple Podcasts & Spotify ready: Hit −16 LUFS loudness and export lossless WAV stems

Every podcast enhance pass automatically levels integrated loudness to −16 LUFS — the standard stereo delivery target for Apple Podcasts and Spotify — while preventing harsh laugh peaks from clipping. Export uncompressed WAV or lossless FLAC stems for your DAW, or download distribution-ready MP3 and M4A files.

### Video podcasts & YouTube: Polish 4K video podcast episodes without re-rendering

Video podcasters filming multi-cam setups or Riverside 4K MP4s can drop the video file straight in without bouncing separate audio tracks. Audo upgrades every speaking voice on the soundtrack and copies your original video stream frame-for-frame, ready for YouTube or vertical clips.

## Where voice enhancement fits in your podcast production chain

Built on Audo and its studio Audio enhancer engine, this podcast audio enhancer processes uncompressed and compressed audio (WAV, MP3, M4A, AAC, FLAC, OGG, Opus, AIFF) plus video podcasts (MP4, MOV, MKV, WebM, AVI) up to 10 GB without an account and up to 10 hours signed in — with the first minute of each file free, 3 times a day, with no sign-up. Episode turnarounds average about 8 seconds for 1 minute, about 38 seconds for a 20-minute segment, and under 2 minutes (about 1 minute 42 seconds for audio) for a 1-hour show.

Order matters when producing a show with intro themes, ad transitions, or ambient beds. Because speech resynthesis isolates spoken voices and discards musical instruments, always run raw host and guest voice stems here first, before layering theme music or stingers in Mix audio. If you record double-ender multitracks on Riverside, Zencastr, or SquadCast, you only need to enhance the noisy or echoey participant track while leaving a clean studio mic untouched.

When both co-hosts already sound crisp on dynamic mics and simply sit at uneven volumes, skip resynthesis and match their loudness with Balance audio instead. From a polished dialogue stem, tighten pacing with Remove filler words and generate speaker-labeled show notes and VTT chapters using Podcast transcription.

Recommended order for a five-step podcast post-production workflow

| Workflow step & tool | What it fixes in your episode | When to run it |
|---|---|---|
| 1. Podcast audio enhancer (this page) | Rebuilds laptop, earbud, and echoey guest voices to warm −16 LUFS studio tone | First — on raw dialogue stems before any music is mixed in |
| 2. Audio leveler (/audio-leveler) | Evens out loud and quiet speakers without changing natural microphone character | When two clean mics sit at mismatched volumes in one track or multitrack |
| 3. Remove filler words (/remove-filler-words) | Cuts um, uh, and repeated starts cleanly on natural word boundaries | After voice cleanup, before laying down timed music beds |
| 4. Mix audio (/mix-audio) | Layers intro/outro music with auto-ducking under spoken voices | After enhancing speech — enhancing a mixed master removes intro music |
| 5. Podcast transcription (/podcast-transcription) | Creates speaker-labeled TXT show notes plus SRT and VTT episode captions | Last, on the final edited master so timestamps match published audio |

Tool: Enhance voice (`enhance_voice`). The same tool's other pages: https://audo.ai/audio-enhancer.md, https://audo.ai/remove-echo.md, https://audo.ai/audio-cleaner.md, https://audo.ai/voice-cleaner.md, https://audo.ai/video-audio-enhancer.md, https://audo.ai/audio-fixer.md, https://audo.ai/fix-muffled-audio.md, https://audo.ai/fix-distorted-audio.md, https://audo.ai/mic-enhancer.md. Price: 5 credits a minute — $0.05/min ($3.00/hr), pay-as-you-go with no monthly subscription — of input for whole files, charged only when a job succeeds.

## Free API

```bash
curl -F file=@guest-track.wav https://audo.ai/api/try/enhance-voice -D response.headers -o response.body
```

Read response.headers and response.body before naming media. Handle 202, 200 JSON and errors with the complete response client at https://audo.ai/docs/api?utm_source=markdown&utm_medium=agent#responses.

Free for the first minute of each file, 3 times a day per person, with no key or account. Uploads up to 10 GB, 2 at once from one address. The response is the result itself; a job that runs longer than about 30 seconds returns 202 with a link to check on it. With an API key (`-H "Authorization: Bearer $AUDO_API_KEY"`), omitting free runs the full job with credits if the balance covers it, otherwise the free allowance if quota remains. Set free=true to prohibit spending; for paid runs use free=false with an approved positive max_credits. A free result cut short comes with finishUrl (and the Audo-Finish-Url header when the response is the file itself): give it to the person, who pays there (from $5, no sign-up), and the whole file runs; keep checking the status link, whose finishedBy names the whole-file job and its own status link. Details: https://audo.ai/docs/api.md

## Options

Form fields with the same names as the MCP tool's inputs:

- `noise_reduction`: How much of the regenerated voice to use, as a percentage. 100 uses all of it; lower values mix back some of the original sound. Default 100.
- `auto_volume`: Sets the whole file to -16 LUFS with one gain, and limits peaks to -1 dBTP. It doesn't balance loud and quiet speakers. Default true.
- `output_format`: The result's format: same (as the input; a video stays a video), wav, mp3, m4a, or flac. Default same.

## Languages

Any language: it works on the sound, not the words.

## From an assistant (MCP)

Add https://audo.ai/mcp and sign in (setup for each assistant: https://audo.ai/setup.md). The tool is `enhance_voice`:

> Regenerates speech: removes echo, noise, and distortion, and restores muffled, phone, or low-quality voices. Then sets the file to -16 LUFS. Made for voices: music and other sounds are removed too. Works on video. Use it for echoey, phone, low-quality, or damaged recordings. Not for plain background noise when the voice is fine (remove_noise keeps the real voice). It costs 5 credits a minute, charged only if the job succeeds. Returns the result with download links, or job_id for get_job if it takes longer.

Example: "Use Audo to enhance guest-track.wav to studio podcast quality at -16 LUFS."

## Questions

**Is there a free podcast audio enhancer for long episodes without a subscription?** Yes. Audo lets you test the first minute of any episode free, 3 times a day, with no sign-up. Enhancing full-length episodes up to 10 hours costs $0.05 a minute ($3.00 an hour), paid as you go from $5 with no subscription — see pricing.

**How do I enhance podcast audio when a remote guest recorded on AirPods or a laptop?** Export the guest's isolated WAV or MP3 track from Riverside, SquadCast, Zencastr, or Zoom and upload it to Audo above. Audo removes room bounce, laptop fan hum, and Bluetooth bandwidth thinness while leveling loudness to −16 LUFS so the guest sits naturally beside a studio dynamic mic.

**How does Audo compare with Adobe Podcast Enhance and Descript Studio Sound?** Adobe's free tier stops at 30 minutes and 500 MB per audio file with no strength slider, while Firefly Pro ($19.99/month) caps uploads at 2 hours and 1 GB, and Descript Hobbyist ($24/month) bills a recurring plan. Audo takes audio and 4K video episodes up to 10 hours and 10 GB signed in, includes a 10% to 100% Studio voice blend slider, and charges only per minute processed — see Adobe Podcast Enhance limits and Descript Studio Sound alternatives.

**Will enhancing a finished podcast episode delete my intro and background music?** Yes. Because Audo's podcast audio enhancer reconstructs spoken voices only, theme songs, transition stingers, and ambient beds mixed underneath speech get stripped away. Always enhance raw vocal tracks in Audo first, then combine your clean voice stems and music in Mix audio with auto-ducking enabled.

**What loudness level (LUFS) and file formats does it output for Spotify and Apple Podcasts?** In Audo's podcast audio enhancer, Normalize volume sets integrated loudness to −16 LUFS by default, matching the stereo loudness recommendation used by Apple Podcasts and Spotify (you can verify any master afterward in Audo's LUFS meter). WAV, MP3, M4A, and FLAC uploads return in their original format, or you can pick lossless WAV or FLAC under More options.

**What if one voice sounds over-processed at 100% Broadcast strength?** In Audo, dial the 10–100% Studio voice blend slider back to between 60% and 80%. Blending a portion of the dry recording back into the reconstructed voice keeps fast laughs, breaths, and natural vocal grit intact while still taming room reverb.

**Can Claude, ChatGPT, or an automated script enhance weekly podcast stems?** Yes. Connect Audo's MCP server so Claude, ChatGPT, or Claude Code can enhance guest tracks, balance loudness, and generate episode transcripts from a single prompt. Add Audo to your assistant once to automate recurring post-production.

## More

- Every tool: https://audo.ai/llms.txt
- OpenAPI: https://audo.ai/api/openapi.json
- This page for people: https://audo.ai/podcast-audio-enhancer?utm_source=markdown&utm_medium=agent