Auphonic
Automated loudness normalization, noise reduction, and multi-track leveling for podcasts
Auphonic automates the audio post-production work that used to require a professional audio engineer: loudness normalization to broadcast-standard LUFS targets, noise and hum reduction, dynamic range leveling between multiple speakers, and format conversion with metadata. Upload your raw recording, configure a preset once, and get broadcast-ready audio every time. Trusted by professional podcasters and broadcasters worldwide since 2012.
Visit AuphonicWhat is Auphonic?
Auphonic is an automated audio post-production service that has been used by podcasters and broadcasters since 2012. It automates the technical audio processing steps that most creators either skip (producing inconsistent-sounding audio) or pay an audio engineer to handle: loudness normalization, noise reduction, dynamic leveling, and format output. The goal is that you can configure a processing preset once and apply it to every episode automatically, with no manual audio work required.
The core feature that makes Auphonic essential for serious podcasters is LUFS normalization. Different podcast platforms target different loudness levels — Spotify at -14 LUFS, Apple Podcasts at -16 LUFS — and recordings made at different microphone distances, gain settings, or environments can vary dramatically. Auphonic measures your recording's integrated loudness and adjusts the output to hit your target, ensuring listeners don't have to adjust volume between your show and others on the same platform.
For multi-speaker or remote interview podcasts, Auphonic's multitrack feature is particularly powerful. When each speaker records locally (common in remote recordings using Zencastr, Riverside, or Squadcast), the tracks can have completely different noise floors, room sounds, and volume levels. Auphonic processes each track independently — applying the appropriate noise profile and leveling — then mixes them into a balanced stereo output. This replaces hours of manual track-by-track editing.
The 2 free hours per month makes Auphonic accessible to hobbyist podcasters and freelancers without any financial commitment. For daily or high-volume podcasting, the ~€89/year plan offers unlimited processing and API access, making it cost-effective compared to hiring an audio engineer or spending time on manual post-production.
Key Features
LUFS Loudness Normalization
Set a target loudness level (e.g., -16 LUFS for Apple Podcasts, -14 for Spotify) and Auphonic normalizes every episode to that target. Ensures your show sounds consistent regardless of recording conditions and matches platform expectations.
Noise & Hum Reduction
Automatically detects and reduces broadband noise (room hiss, fan noise, AC hum) and electrical hum (50/60Hz and harmonics). More effective than static noise reduction plugins because it adapts to the actual noise profile of each recording.
Multi-Track Leveling
Accepts separate audio tracks per speaker and processes them independently before mixing. Levels each voice to a consistent loudness and balances the mix — ideal for remote interview podcasts with tracks from different recording environments.
Chapter Marks
Embed chapter markers with titles, URLs, and cover images into output files. Chapter marks appear in podcast apps that support them (Apple Podcasts, Overcast, Pocket Casts) as a navigable timeline — improving listener experience for longer episodes.
Direct Publishing Integration
Publish finished audio directly to podcast hosting services (Libsyn, SoundCloud, etc.), cloud storage (Dropbox, Google Drive, S3), or via FTP. Complete the full post-production-to-publish workflow without manual file transfers.
API for Automation
Auphonic provides a REST API for automated podcast production pipelines. Automatically submit new recordings for processing as soon as they finish, and receive the processed file at a webhook. Eliminates manual upload/download steps entirely.
Pricing
Auphonic offers a permanent free tier with 2 hours of processing per month. Paid plans remove the limit and add API access and additional integrations.
| Plan | Price | Processing | Key Features |
|---|---|---|---|
| Free | $0 | 2 hrs/month | All features, 2 hours monthly limit |
| Individual | ~€89/year | Unlimited | Unlimited hours, API access, all integrations |
| Credit Packs | From €5 | Per-hour credits | Pay-as-you-go without annual commitment |
| Organizations | Contact | Multi-user | Team accounts and volume API usage |
Check auphonic.com/pricing for current rates. Prices shown in EUR.
Pros & Cons
Pros
- 2 free processing hours per month — no credit card required
- Best-in-class LUFS normalization trusted by professional broadcasters
- Multi-track leveling handles remote interview audio automatically
- Direct publishing integrations eliminate manual file transfer
- API available for fully automated podcast production pipelines
Cons
- Does not remove filler words — use Cleanvoice for that
- Processing times can be slow for long files (30-60 min for a 60-min episode)
- Advanced multi-track features have a learning curve for new users
- Pricing in EUR can fluctuate for USD-based customers
Alternatives to Auphonic
If you need filler word removal, real-time processing, or an all-in-one recording and editing suite, these tools complement or replace Auphonic depending on your workflow.
Cleanvoice
Filler word and silence removal — pairs with Auphonic for complete audio cleanup: Auphonic for quality, Cleanvoice for content.
Adobe Podcast
AI microphone enhancement and transcript editing. Better for real-time speech enhancement; Auphonic is better for batch post-production.
Podcastle
All-in-one browser-based recording and editing with AI noise removal. Simpler workflow but less control over LUFS targets.
Descript
Transcript-based podcast editing with audio enhancement. More expensive but covers recording, editing, and publishing in one tool.
Frequently Asked Questions
What is Auphonic?
Auphonic is an automated audio post-production service that applies LUFS loudness normalization, noise and hum reduction, dynamic leveling, and multi-track processing to podcast and broadcast recordings. You upload an audio file, configure a preset, and receive broadcast-ready audio without manual EQ, compression, or normalization work. It offers 2 free processing hours per month and has been used by professional podcasters and broadcasters since 2012.
Is Auphonic free?
Yes, Auphonic offers 2 free processing hours per month permanently — no credit card required. For most podcasters publishing one or two 45-minute episodes per week, the free tier is sufficient. Unlimited plans start at approximately €89 per year. Per-hour credit packs are also available for users who occasionally exceed the free limit without wanting an annual subscription.
What does LUFS normalization mean in Auphonic?
LUFS (Loudness Units relative to Full Scale) is the broadcast standard for measuring perceived loudness. Spotify targets -14 LUFS, Apple Podcasts recommends -16 LUFS, and broadcast TV uses -23 LUFS. Auphonic measures your recording's integrated loudness and adjusts the output level to hit your target — so your podcast sounds at a consistent volume on any platform, matching the loudness of other shows in the same app.
Does Auphonic work with multi-speaker recordings?
Yes. Auphonic's multitrack production feature accepts separate tracks per speaker, processes each independently with an appropriate noise profile and leveling, then mixes them into a balanced stereo output. This is valuable for remote interview podcasts where each participant records on their own equipment in a different acoustic environment — Auphonic handles the balancing that would otherwise require manual track-by-track editing.
Can Auphonic publish directly to podcast platforms?
Yes. Auphonic integrates with podcast hosting platforms including Libsyn, SoundCloud, and Blubrry, as well as cloud storage (Dropbox, Google Drive, Amazon S3) and FTP. After processing, Auphonic automatically uploads the finished file with metadata, chapter marks, and cover art. This completes the production-to-publish workflow without any manual file management.
What is the difference between Auphonic and Cleanvoice?
Auphonic and Cleanvoice solve different problems and work well together. Auphonic improves audio quality — loudness normalization, noise reduction, dynamic leveling. Cleanvoice improves content — removing filler words (um, uh), mouth sounds, and dead silence. Neither does what the other does. Many podcasters run their raw recording through Adobe Podcast Enhance for noise reduction, Cleanvoice to remove filler words, and then Auphonic for final loudness normalization before publishing.
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