The Voice Frequency Analyzer shows you the frequency makeup of your voice as a live spectrum graph. Click Start Analysis, allow microphone access, then speak — the chart updates in real time, highlighting your dominant frequency, usable frequency range, and where your voice sits across the spectrum. You can see how different sounds — vowels, consonants, higher notes — register as distinct peaks and valleys on the frequency display, useful for checking mic response and tuning your vocal setup. A hearing test online plays tones across the spectrum to show exactly where your hearing drops off.
| Voice Type | Typical Range | Frequency |
|---|---|---|
| Bass | E2 - E4 | 82 - 330 Hz |
| Baritone | A2 - A4 | 110 - 440 Hz |
| Tenor | C3 - C5 | 130 - 523 Hz |
| Alto | F3 - F5 | 175 - 698 Hz |
| Mezzo-Soprano | A3 - A5 | 220 - 880 Hz |
| Soprano | C4 - C6 | 262 - 1047 Hz |
The fundamental frequency (F0) is the rate at which your vocal folds vibrate per second, measured in Hertz. It is the lowest and typically strongest frequency component of your voice. When the analyzer displays "120 Hz", it means your vocal cords are vibrating 120 times per second at that moment — a frequency that corresponds roughly to B2 on a musical scale, which sits in the typical range for adult male speaking voices. The fundamental frequency is the clearest indicator of whether your voice pitch is high or low. A sound level meter online shows current, average, and peak dB readings to help you optimise your setup.
Harmonics are integer multiples of the fundamental frequency. If your F0 is 120 Hz, your first harmonic is 240 Hz, the second is 360 Hz, and so on. These harmonic overtones give your voice its unique tonal character — the difference between a warm baritone and a bright tenor, or a rich alto and a bright soprano, is largely a matter of which harmonics are emphasised by the shape of your vocal tract. On the frequency spectrum display, harmonics appear as a series of regularly spaced peaks that trail off in height to the right of the fundamental.
The four frequency bands displayed below the spectrum graph each describe a different aspect of your voice's energy:
Adult men typically speak with a fundamental frequency between 85 Hz and 180 Hz, with an average around 120 Hz. Men with very deep voices (bass voice type) may centre around 85–100 Hz. Tenor voices tend to speak around 150–180 Hz. These ranges apply to habitual speaking pitch — the frequency a person naturally gravitates towards in relaxed conversation, as distinct from the higher pitches used when excited or the lower pitches when authoritative.
Adult women typically speak between 165 Hz and 255 Hz, with an average around 200–210 Hz. Women with alto voice types gravitate toward the lower end (165–190 Hz); sopranos often speak at 220–260 Hz. The substantial overlap between male and female speaking frequency ranges — roughly 150–200 Hz — is the "androgynous zone" where voice gender is ambiguous to the ear without additional cues like vocabulary and speech patterns.
Children's voices are not yet differentiated by gender — both boys and girls typically speak at 250–300 Hz. Male voice frequency drops dramatically during puberty as the larynx grows and vocal folds lengthen, typically settling 60–70% lower. Female voices also drop slightly during puberty but much less dramatically. In older adults, vocal fold thinning and reduced muscular tension cause voice frequency to drift — men's voices often rise slightly after 60, while women's voices may drop slightly post-menopause.
If your voice sounds thin, muffled, or tinny on video calls, the voice frequency analyzer helps diagnose the problem. Speak into your microphone and compare the spectrum to what you expect. If the mid-range (300 Hz–2 kHz) is weak, the microphone or its positioning is cutting fundamental vocal energy. If the presence band (2–4 kHz) is missing, the voice will sound recessed — a common issue with laptop microphones and cheap webcam mics. If the bass band dominates, you may be too close to a cardioid microphone experiencing proximity effect. Check for audio feedback and delay with the free echo test.
Singers and vocal coaches use frequency analysis to verify pitch accuracy and consistency. Sustain a note and watch the fundamental frequency display — ideally the number should stay stable for the duration of the note. Wobble in the Hz reading indicates pitch instability; a slow drift upward or downward indicates pitch drift (flat or sharp tendency). The closest note display and cent deviation readout let you see exactly how far off a target pitch you are in real time, which is useful for ear training exercises.
When a recording sounds wrong but you cannot immediately identify why, the live spectrum display can pinpoint the problem. Unusual peaks at specific frequencies may indicate resonances in the room or recording environment. A "hole" in the spectrum at 1–3 kHz is a common symptom of comb filtering from microphone placement near a reflective surface. Excessive bass build-up below 200 Hz often comes from proximity effect on condenser microphones. The background noise analyzer can help identify the specific frequency content of any noise that appears in the spectrum even when you are not speaking.
Adult men typically speak at 85–180 Hz (average: ~120 Hz); adult women at 165–255 Hz (average: ~210 Hz). There is no "correct" speaking frequency — it is determined by the length and mass of your vocal folds, which are set by genetics. However, habitual pitch can be consciously raised or lowered with training, and many people unconsciously shift their speaking pitch depending on context (formal vs casual, authoritative vs empathetic).
Voice frequency is influenced by hydration, muscle warm-up, and hormonal cycles. Immediately after waking, vocal folds are less hydrated and the voice typically runs 5–15 Hz lower than usual. After speaking for 10–15 minutes, folds warm up and frequency stabilises. Dehydration throughout the day causes progressive stiffening that raises the fundamental frequency slightly. Menstrual cycle hormones in women can cause measurable frequency shifts. Stress increases laryngeal muscle tension, which raises pitch.
Yes — sustain a note, read the fundamental frequency in Hz, and compare it to the target note frequency (A4 = 440 Hz, C4 = 261.6 Hz, etc.). The "Closest Note" display and cents deviation reading show you how close to the target pitch you are. However, for dedicated pitch training, a chromatic tuner designed for vocal use gives more musical feedback. This voice frequency analyzer is more useful for understanding the full spectral character of your voice than for precise pitch-by-pitch tuning exercises.
The analyzer needs a sustained, tonal sound to detect a clear fundamental frequency. Background noise, consonants, whispers, and ambient room sounds produce complex, atonal spectra where pitch detection algorithms struggle to identify a single dominant frequency. Sustain a clear "ahhh" vowel and hold it steady for 2–3 seconds to get a stable reading. Also check that the room is reasonably quiet — constant noise above 60 dB can swamp the microphone signal and make pitch detection unreliable.
The Hz value on its own does not indicate voice quality — it only indicates pitch. A deep voice at 100 Hz is not better or worse than a higher voice at 220 Hz. What matters for voice quality is the distribution of frequency energy: a well-balanced voice with strong presence (2–4 kHz) is clear and intelligible; a voice with weak mids is muffled; one with excessive bass is boomy. Use the frequency distribution bands below the spectrum graph to assess quality, not just the fundamental frequency reading.
All audio analysis is performed locally in your browser. No audio data is recorded or transmitted.
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