Pitch range explorer
Pitch is the one part of a voice you can put a number on. Measure yours with your microphone — the audio is analysed in your browser and never uploaded — or drag the handle to explore. Either way you get the reference band you are in, the nearest musical note, and how many semitones away your goal is.
How to find your own speaking pitch properly
The handle above is for orientation. If you want a real number, you can get one in about two minutes with a free spectrogram or tuner app:
Read, don't hold a note
Read two or three sentences of ordinary prose out loud at a comfortable volume. Sustained vowels give a misleadingly stable figure; connected speech is what listeners actually hear.
Watch the median, not the peaks
Your pitch moves constantly. What matters clinically is the median fundamental frequency across connected speech, not the lowest note you can reach.
Repeat on three different days
Pitch varies with sleep, hydration, reflux and time of day. One reading is an anecdote.
What the bands mean
| Band | Range | What it tells you |
|---|---|---|
| Typical adult male | 85 – 155 Hz | Pitch alone is read as male by most listeners |
| Overlap | 145 – 175 Hz | Pitch alone does not settle it. Resonance and speech pattern decide |
| Typical adult female | 165 – 255 Hz | Pitch alone is read as female by most listeners |
These are population reference ranges from acoustic phonetics, and they overlap on purpose — real voices do not sort into two boxes. Note that pitch is only one of three cues. Resonance (the size and shape of the tube above your vocal folds) and speech pattern (intonation, phrasing, word choice) carry at least as much weight, and neither is changed by surgery. That is why every surgical plan we coordinate includes a therapy component.
Why semitones and not hertz
Human pitch perception is logarithmic. A 20 Hz change matters enormously at 120 Hz and barely registers at 400 Hz, so quoting a surgical result as "dropped 30 Hz" is close to meaningless without the starting point. Semitones fix that: one semitone is always the same perceived step, which is why the surgical literature reports pitch change in semitones and why this tool does too.
This tool is an orientation aid, a browser-grade estimate, not a clinical acoustic workup and not a diagnosis. It uses your device microphone, which is uncalibrated, in a room with unknown noise. A laryngologist establishes your real fundamental frequency with stroboscopy and calibrated acoustic analysis before any surgical discussion.
How the measurement works
When you press Measure my voice, the page asks your browser for microphone access and analyses roughly eight seconds of speech. Nothing is recorded, uploaded or stored — the audio never leaves your device, and the stream is discarded the moment the measurement ends.
Sample the waveform
Audio is read in 4,096-sample frames, about 85 milliseconds each at a typical 48 kHz sample rate.
Find the repeating period
Each frame is compared against a time-shifted copy of itself — normalised autocorrelation. The shift that best matches is the length of one vocal-fold cycle, and the fundamental frequency is simply the sample rate divided by that length.
Discard what isn’t voice
Frames that are too quiet, or where no shift matches well, are silent gaps and consonants rather than voiced sound. They are thrown away instead of being counted as a pitch.
Take the median, not the average
Normal speech moves constantly through intonation. The median of several hundred voiced frames ignores those peaks and troughs and reflects where your voice actually sits — which is why clinicians report habitual speaking pitch as a median too.
The one classic failure of this method is reporting a note an octave too low, because a waveform repeating every cycle also repeats every second cycle. The detector guards against it by taking the first strong match rather than the strongest, and the result is accurate to a fraction of a semitone on test signals. What it cannot do is correct for an uncalibrated microphone or a noisy room, which is the honest limit of any browser measurement.
Ask about your voice
Tell us where your voice sits and what you want it to do. A bilingual coordinator replies and asks for a short voice sample, then an independent partner laryngologist gives an honest opinion — including “therapy first” where that is the right answer.
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