Can I add pauses, emphasis, or pacing to AI voiceover?

Yes, pacing controls and script punctuation can shape delivery significantly.

The simplest lever is punctuation. Commas produce short breaths of around 250 milliseconds, full stops give a longer pause of roughly 500 to 700 milliseconds, and ellipses or paragraph breaks extend that further. Splitting a sentence in two is often more effective than a manual pause tag because the surrounding intonation also resets naturally.

For stronger control, FQO.US AI voiceover supports per-slide pacing tweaks and emphasis markers on specific phrases. Mark the words you want lifted, then preview that slide in isolation before regenerating the rest. This keeps cost and time low when you are tuning a single line.

Pacing should also vary by slide function. Title and section slides usually need a half-second pre-roll so the viewer can read before audio starts. Pricing, technical, or legal slides benefit from a slower words-per-minute setting because viewers often re-read. Summary slides can move faster because the content has already landed.

Avoid the common mistake of stacking pauses to add gravitas. Three or four pauses in one sentence sound stilted and break trust. Use one deliberate pause where the meaning shifts, then let the script and natural punctuation carry the rest.

If you need theatrical emphasis or strong character, pair AI narration with short voice annotations recorded by a human presenter on hero slides. That gives you a credible mix without re-recording the whole deck.