Adobe Podcast Enhance Speech: Free Limits and What to Do with Long Files

Enhance Speech is Adobe Podcast's tool for cleaning up voice recordings in the browser. Version 2, which Adobe announced in November 2024, removes background noise, reverb, and music. Adobe calls it "completely free for everyone to try and use on a daily basis", and you sign in with an Adobe account.

It rebuilds the voice rather than filtering the noise out, so the result can sound a little different from the person who recorded it. That's why a strength control matters: it lets you mix some of the original back in. Adobe's free plan doesn't have one; Audo AI's Audio enhancer includes a Strength slider on both its free preview and whole files.

Both Adobe plans cap the length of each file and the hours you can enhance a day, while Audo AI's Audio enhancer takes files up to 10 hours with no daily cap. Check which side of the line your file falls on before you upload a long episode:

• Free plan. Audio files only (MP3, WAV, M4A, FLAC, OGG, and AAC), up to 30 minutes and 500 MB each, up to 1 hour a day, one file at a time, and no strength control. Adobe keeps enhanced files for 10 days.
• Premium, through Firefly Pro. US$19.99 a month, billed monthly. Files up to 2 hours and 1 GB, up to 4 hours a day, video files such as MP4 and MOV, bulk upload, and a strength control. Since August 30, 2026, Adobe no longer sells Premium as its own plan; new buyers get it with Firefly Pro, and people who already had Premium keep it.
• Audo AI Audio enhancer (no subscription). Audio and video files up to 10 GB without an account, and up to 10 hours when signed in, with no daily limit for whole files and a Strength control from Full to Subtle. The first minute of each file is free, 3 times a day, with no sign-up, and whole files are $3.00 an hour ($0.05 a minute).

A 45-minute interview or a 90-minute episode is over Adobe's 30-minute free limit for one file. When an upload fails, Adobe's help says to check the file type, then your plan's daily limits. You can enhance the full episode in one go with Audo AI, split it into 30-minute parts for Adobe's free plan, or pay for Firefly Pro:

• Enhance the full episode in one go with Audo AI. Audo AI's Audio enhancer takes files up to 10 GB without an account, and up to 10 hours when you're signed in, with no daily limit for whole files. It removes noise and echo, fixes muffled and distorted voices, and has a Strength setting from Full to Subtle. At $3.00 an hour, a 90-minute episode costs $4.50, and the first minute is free with no sign-up.
• Split it and use Adobe's free plan over several days. Cut the file into parts of 30 minutes or less, for example with Audo's Cut audio. A 90-minute episode makes at least three parts, and with 1 hour a day it takes two days. Enhance each part, then join them again with Merge audio.
• Pay for Firefly Pro. Files up to 2 hours long and 4 hours a day, with video and the strength control, for US$19.99 a month. A file over 2 hours, such as a 2-hour-15-minute recording, is still too long.

Adobe's free plan doesn't take video files. You can enhance the video directly with Audo AI, or pull the audio out for Adobe and put it back:

• Enhance the video directly in Audo AI. Audo AI's Audio enhancer takes MP4, MOV, MKV, WebM, and AVI files up to 10 GB and gives your video back with the enhanced sound and the picture untouched, so there's nothing to line up again.
• Take the sound out, enhance it, and put it back. Pull the audio out with Audo's Extract audio from video, clean it up with Enhance Speech, then put the clean sound back on the picture with Replace audio in video.

For short audio, Adobe's free plan is hard to beat: if your files are under 30 minutes, you enhance less than an hour a day, and you don't need a strength control, it costs nothing.

• Adobe's free plan. Audio files under 30 minutes, up to an hour a day, with an Adobe account.
• Firefly Pro. If you enhance more than about 7 hours a month in files up to 2 hours long, US$19.99 a month comes out cheaper than paying Audo AI's $3.00 an hour.
• Audo's Remove noise. If the voice already sounds fine and only the background is noisy, Audo AI's Remove noise filters out the noise and keeps the voice exactly as recorded, nothing rebuilt.