: You might be looking for completely free audio editing software similar to Audition, such as Audacity or DarkWave Studio, which do not require a subscription.
: You might be looking for the official, 7-day free trial of Adobe Audition provided by Adobe, which allows you to use the full version of the software for a limited time. : You might be looking for completely free
While I can certainly provide a on how to use Adobe Audition for high-quality audio editing, there are a couple of different things you might mean by "free download": such as Audacity or DarkWave Studio