Speech Slowdown Audio Editing

I have a recorded lecture that is perfectly clear in every respect except pacing. I want the speech slowed just enough to aid comprehension, yet I need the voice to keep its original timbre and natural-sounding quality—no “chipmunk” pitch shifts or robotic artifacts. The goal is simply to make the material easier for listeners to follow; content, length, and structure stay the same.

Send back a single high-quality stereo WAV (or the original format if you prefer) with the adjusted timing, ready to drop straight into the presentation deck. If you work in Audacity, Adobe Audition, Logic, or a comparable DAW and can apply a transparent time-stretch algorithm, the job will be straightforward. Please include a short note on the exact method or plug-in you plan to use so I know the lecture’s tone will remain untouched.