Measured voice · The orator

John F. Kennedy

150s segment · male register · 16 benchmarked readings · measured 2026-07-26

Comparisons are based on Resonate's acoustic analysis of publicly available speeches. No endorsement or affiliation is implied.

The read

Washington, January 1961: freezing air, and a new president delivering his inaugural address without an overcoat. The closing minutes — the “ask not” passage — measure like architecture: fifty-five stops in two and a half minutes, nearly a third of the whole passage silent, both pacing readings optimal. The melody, for all the era’s soaring reputation, is modest — an eight-semitone range, squarely in the optimal band, never theatrical. What actually surges is the volume: loudness swinging harder than the benchmark calls for, the drumbeat underneath the most quoted sentence in American oratory. The engine of “ask not” was never the tune. It was silence, and thunder, in alternation.

Pitch contour · every voiced frame

2343604861s75s149sHz

Pitch & melody

Average pitch220Hz
above the zoneoptimal 100150 Hz
Pitch variability3.35st
in the zoneoptimal 36.5 st
Pitch range8.1st
in the zoneoptimal 712 st
Pitch dynamism (PDQ)0.22
in the zoneoptimal 0.150.38

Pacing & pauses

Pause ratio28.8%
in the zoneoptimal 1835 %
Average pause length0.78s
in the zoneoptimal 0.41 s
Syllable rate3.16syl/s
below the zoneoptimal 45.5 syl/s

Dynamics

Volume dynamics29.4dB
above the zoneoptimal 818 dB
Loudness variability9.87dB
above the zoneoptimal 3.58 dB

Voice quality

Voice clarity (HNR)10.8dB
below the zoneoptimal 1230 dB
Pitch steadiness (jitter)1.78%
in the zoneoptimal 02.5 %
Volume steadiness (shimmer)10.5%
above the zoneoptimal 09 %
Vocal fry (creak)1.8%
in the zoneoptimal 08 %

Spectral balance

Presence band (2-4 kHz)1.16%
below the zoneoptimal 620 %
Chest band (0-500 Hz)11.7%
below the zoneoptimal 3575 %
Spectral tilt (alpha ratio)-5.68dB
above the zoneoptimal -22-8 dB

Energy by band

Low (0–500 Hz)11.7%Mid (0.5–2 kHz)87.1%Presence (2–4 kHz)1.2%Brilliance (4 kHz+)0.1%

The presence band (2–4 kHz, red) is what carries a voice to the back of a room.

Steal this

the full stop

What the measurements endorse is the stopping: pause frequency and pause length both optimal, with the loudness doing the swelling in between. Make the point, hold the silence one full beat past comfortable, then let the next line arrive slightly bigger than the last. The build that reads as oratory is dynamics plus silence — speed never enters into it.

From the training library: The full stop

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