02 · Speed & silence
Fast, but it still sounds like a voice.
Podcast speed runs from 0.5× to 3.0× in 0.1× steps, and it doesn't have to be one number for everything — any show can keep its own, so a dense interview sits at 1.2× while a host you know well runs at 2.4×. Set it once and PodMelody remembers which is which. Underneath is our own custom audio time-compression algorithm, tuned specifically for podcast speech legibility — it is the whole reason the slider goes that far while a voice still sounds like a voice well past 2.0×, instead of thin and brittle. Songs are never sped up; music plays at the tempo it was recorded. Silence compression — part of Pro audio in Plus — quietly trims the dead air between sentences, so an hour of talk takes the time it deserves.
Plus takes the work off the iPhone entirely. Switch on pre-processing and downloaded episodes are re-rendered at your speed ahead of time, so what plays in the car is an ordinary file at 1.0× — no live audio processing at all. That matters most on the dash, where navigating and playing audio is already enough to make an iPhone run hot without asking it to do DSP on top. It can hold off until you're on a charger, and it works away in the background.