The ability to set a tiny fade-in every time I start and stop the transport. Pro Tools has it for start, and Reaper has it for start and stop. No more pops every time you hit play.
I don’t mean auto-cross fades when editing, or the (very cool) auto zero crossing setting. I mean a quick fade in of all audio upon starting play.
No, that would affect only the beginning and end of events, and transitions between events. What Pro Tools can do is fade in (like 0.25ms) when you press start on the transport, even when the start position is in the middles of events, and even if the audio waveform happens not to be at a zero crossing (which would otherwise create a pop the moment you press play.)
The entire audio (playback engine I suppose?) fades in based on a global setting. Pro Tools has this setting in the transport area along with pre-roll and post-roll settings. In Pro Tools I set it for a short fade-in whenever I start playback.