Our Story Begins with Soundbooth
Adobe had a challenge: Find an audio post-production tool that was equally compatible with Mac OS and Windows. It was intended to serve editors who were primarily skilled with video but also needed high-end audio tools.
Soundbooth was perfect. Task-based, with key processes grouped into a user-friendly list with lots of buttons that take complexity and just "make it work" (see Figure 1). Soundbooth introduced the ASND sound format, which is a little like AAF but more Adobe-tastic. It allowed editors to use the "Edit Original" command in Premiere Pro, update a sound mix, and then jump back to Premiere Pro to hear the results.
The Spectral Display in Soundbooth (borrowed from Audition) was a work of art, allowing you to "see" audio in a unique way (see Figure 2). It even removed unwanted frequencies, without the usual trial-and-error of notch filters and their ilk.