If you're looking for an app to strip background noise out of recordings, ai|coustics is a powerful option. This web app and API/SDK converts speech recordings into studio-quality audio, with background noise reduction, echo cancellation and distortion filtering. It can handle more than 40 file formats and can process batches of files, which is useful for podcasters and other content creators.
Another good option is Audo Studio. This AI-powered tool lets you clean audio with a single click, automatically removing background noise and cutting back on echo. It's got more advanced noise removal and echo reduction abilities, and it processes audio quickly. It's also got a pay-as-you-go pricing system, so it's not too expensive for solo users.
You could also look at Podcastle, an all-purpose web-based content creation studio that includes an AI noise reduction option in its audio editor. Podcastle is geared for creating high-end podcasts and videos, but it's got other tools, too, including AI voices, a recording studio and a hosting site for publishing your work.
If you want a more general-purpose tool, Media.io offers a range of AI-powered tools for processing media, including an AI Noise Reducer for audio. It can handle a variety of formats, and it's got a free trial, so it's good for freelancers, YouTubers and marketing pros trying to improve their media assets.