Auphonic

Auphonic is an automatic audio post-production web service that acts as an AI sound engineer for podcasters, broadcasters, video creators, and audiobook producers. Founded in 2013 and based in Graz, Austria, it has grown to serve more than 2 million users, including production teams at BBC Radio, iHeartRadio, and MSNBC. Rather than requiring users to master compressors, EQ curves, or noise gates, Auphonic analyzes an uploaded audio or video file and applies a set of AI-driven algorithms automatically, producing a polished, broadcast-ready result in a single step. The core algorithm set covers noise and reverb reduction, an adaptive leveler that balances loudness between speakers, music, and speech, AutoEQ and bandwidth extension for clearer voice frequencies, and automatic cutting of filler words, coughs, and silence in multiple languages. For shows recorded with several microphones or remote guests, Auphonic's multitrack engine handles ducking, noise gating, and mic bleed removal across tracks to produce a clean mixdown. Loudness targets can be set to match specifications for podcasts, Spotify, YouTube, Netflix, ACX audiobooks, or broadcast standards like EBU R128, so output is compliant without manual calculation. Beyond audio cleanup, Auphonic includes multilingual speech-to-text powered by a self-hosted Whisper model plus optional third-party engines, generating shareable transcripts, automatic shownotes, and chapter markers. It supports video files directly, extracting and reprocessing the audio track without any loss of image quality, and can generate waveform audiogram videos from audio-only content. Workflow automation is handled through watch folders, a Zapier integration, incoming/outgoing file transfers with services like Dropbox and Google Drive, and automatic publishing to platforms such as YouTube, Libsyn, Soundcloud, and Spreaker. Auphonic is best suited for podcast producers, radio and broadcast engineers, educators processing lecture recordings, video creators, and audiobook narrators who want consistent, professional-sounding audio without hiring a dedicated engineer. A free CLI and full REST API make it straightforward to fold into existing production pipelines, DAWs, or white-label products, while the generous free tier (2 hours/month) lets smaller creators test the algorithms at no cost before upgrading to a paid plan for higher volume and advanced workflow features.