Pitch and stability
Pitch is the center of the sung note. If the pitch line is unstable, the sound may still be finding balance even when the note name looks close.
voice frequency analyzer
Voice frequency analyzer for your singing voice
A voice frequency analyzer helps you observe what changes when you sing louder, softer, brighter, breathier, or with a different vowel.
Harmonics and tone
Harmonics are the stacked frequency components above the pitch. H1, H3, and H5 are useful checkpoints for comparing clarity, breathiness, and intensity between attempts.
Formant candidates
F1, F2, and F3 are not final laboratory measurements here. They are real-time candidates that help you notice how vowel shape and resonance may be changing.
Best practice
Record no audio file unless you choose to export an image. The most useful workflow is live observation, graph capture, and A/B comparison under the same conditions.
Frequently asked questions
Is this the same as a tuner?
No. A tuner focuses mainly on pitch. This page also helps you look at harmonics, formant candidates, input warnings, and graph shape.
Can I use it for speaking voice?
Yes, but sustained singing notes are easier to analyze. Speech moves quickly, so the graph changes more rapidly.
Why do weak signals look noisy?
If the microphone input is too quiet, the analyzer may show room noise or device noise more clearly than the voice.
Related English guides
H1, H3, and H5 harmonics for singersLearn H1, H3, and H5 harmonics in a vocal spectrum and how singers can use them for tone, clarity, and practice comparison.F1, F2, and F3 formants explained for singersA singer-friendly explanation of F1, F2, and F3 formant candidates, vowel changes, resonance, and high-note practice.Chest voice vs head voice in a vocal spectrumHow singers can compare chest voice and head voice tendencies using pitch stability, harmonics, formant candidates, and transition behavior.Passaggio practice with a vocal spectrum analyzerUse a vocal spectrum analyzer to observe passaggio shifts, pitch confidence, harmonic changes, vowel modification, and mix voice practice.Vocal range test without chasing your highest noteA practical vocal range test guide for singers using pitch stability, comfort, harmonic continuity, and repeatable high notes.Breathy voice in a vocal spectrumUnderstand breathy voice tendencies in a spectrum: noise floor, weak harmonics, onset shape, pitch confidence, and safe interpretation.
More tools
Vocal Spectrum Analyzer for SingersFree vocal spectrum analyzer for singers. See pitch, H1-H5 harmonics, F1-F3 formant candidates, graph captures, and practice warnings.Pitch Analyzer for SingersFree pitch analyzer for singers. Check note name, pitch stability, confidence, cents movement, and sustained-note practice in the browser.Formant Analyzer for SingersFormant analyzer for singers. Learn F1, F2, F3 candidates, vowel modification, resonance clues, and high-note formant tuning.Singing Formant Analyzer and Resonance GuideSinging formant analyzer guide for singers. Compare resonance candidates, upper harmonics, projection clues, and vowel changes.Mix Voice Analysis with a Vocal SpectrumMix voice analysis guide for singers. Observe passaggio, pitch stability, harmonics, formant candidates, and vowel modification without diagnosis.