The calm “late-night FM DJ” voice

Use a slow, warm, downward-inflecting voice to steady the other person’s nervous system.

Why it works

Tone is contagious: a calm, low, deliberate voice down-regulates the listener through emotional co-regulation, slowing their arousal so they can think. A downward inflection signals certainty and safety, while a slower pace communicates that you are not panicked — which makes you harder to rattle and easier to trust.

How to do it

1. Slow down and drop your pitch slightly; let sentences fall at the end, not rise.
2. Use it especially when the other side escalates — match their content, not their tempo.
3. Reserve a more assertive tone for rare emphasis so the calm voice stays your default.

Evidence

Vocal calm leverages emotional co-regulation — humans synchronize arousal through tone and prosody. The "late-night FM DJ voice" label is Voss’s practitioner framing of that effect. (mechanistic)

Co-regulation and prosody effects are real; the specific named technique is craft, not a studied intervention.

Common mistake

Matching the other person’s rising energy and speed, which escalates the whole exchange. The point is to be the thermostat, not the thermometer.