Auphonic

API

Audio post-production API for leveling, noise reduction and loudness

Price: Free tier, then paid
Access: API key

About

Auphonic is a web service that cleans up spoken-word audio and video: it levels speakers, removes noise and reverb, cuts filler words and normalizes loudness. It suits podcasts and broadcast. It processes finished files, not live audio; 2 hours a month are free.

What you can do with it

Level speakers and remove noise and reverb from podcast or video audio
Normalize loudness to targets such as EBU R128, ATSC A/85 or Spotify
Mix multitrack interviews with automatic ducking and crosstalk removal

Get started

Create an API key on your Auphonic account settings page
Upload a file; optionally reference a saved preset

Example

curl -X POST https://auphonic.com/api/simple/productions.json \
  -H "Authorization: bearer $AUPHONIC_API_KEY" \
  -F "title=My First Production" \
  -F "input_file=@episode.mp3" \
  -F "leveler=true" \
  -F "denoise=true" \
  -F "normloudness=true" \
  -F "loudnesstarget=-16" \
  -F "action=start"

Details

Hosting: Hosted service
Available in: Worldwide
MCP server: None