What the graph shows
The graph shows energy across frequency. Pitch gives the main note, harmonics show how the voice source is distributed, and formant candidates show where the vocal tract may be emphasizing certain bands.
vocal spectrum analyzer
Vocal spectrum analyzer for singing practice
Use your microphone to see the shape of your voice while you sing. The analyzer is built for repeated practice, not for medical diagnosis or final voice judgment.
How to compare takes
Hold the same note, use the same vowel, and keep the microphone distance fixed. Capture a graph, repeat the same sound, and compare the two images instead of judging a single moment.
Why singers use it
A spectrum can make vague sensations more concrete. If a high note feels easier after a vowel change, you can check whether pitch stability, upper harmonics, or formant candidates changed with it.
Privacy note
Raw microphone audio is processed locally in the browser by default. The tool is designed for practice feedback without uploading your voice recording.
Frequently asked questions
Can a vocal spectrum analyzer diagnose my voice?
No. It is a practice reference. It can show patterns in pitch, harmonics, and formant candidates, but it cannot replace a vocal coach, medical professional, or voice therapist.
What should I sing first?
Start with one comfortable sustained note for two or three seconds. Short stable sounds are easier to compare than full songs.
Why does microphone distance matter?
Moving closer can boost low frequencies, while moving off-axis can reduce upper harmonics. Keep the setup fixed when comparing takes.
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
Voice Frequency Analyzer for SingingAnalyze voice frequency in the browser. Check pitch, level, harmonics, formant candidates, weak signal warnings, and graph captures.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.