Guides
Singing guides
Every page here is written around something sentivoice actually measures — the faults its Vocal Coach detects, the voice-type ranges its range test classifies against, and the acoustic quantities behind the scores. Where a page states a threshold, that is the threshold the real detector fires at.
Faults and how to fix them
intent: technique/problem
- Am I singing in tune?You cannot answer this by listening to yourself while you sing — here is why, and how to get a measured answer from 30 seconds of recording.
- How to stop singing flatSinging flat is a consistent downward bias, not a run of bad notes — here is how it is measured in cents, why it happens, and the drill that corrects it.
- How to stop singing sharpSharp singing is usually pushing, not mishearing — what an upward pitch bias measures, why effort causes it, and how to unwind it.
- How to hold a note steadyA wobbling sustained note is measured as pitch instability — what separates it from vibrato, and the drills that build a steady tone.
- How to stay in keySinging off-key is clashing with the harmony rather than missing a note — how it is measured against the backing track and how to stop drifting out of the song.
- How to stop straining your voiceVocal strain is measurable before it is audible — what jitter, shimmer and harmonics-to-noise ratio reveal about how a take is costing you.
- How to sing in timeTiming drift is an unsteady internal pulse, measured against the actual beat of the backing track — what it looks like in the data and how to fix it.
- How to stop coming in lateLate entries are a distinct fault from drifting tempo — measured as average onset deviation against the beat, and fixed by preparing earlier.
- How to add dynamics to your singingA performance that never changes volume is measurably flat — what dynamic range means in decibels and how to build the contrast back in.
- How to control your volume when singingErratic volume is the opposite fault to flat dynamics — measured as uncontrolled variation, and fixed with breath management rather than restraint.
Voice types and range
intent: voice/range
- What is my vocal range?How to measure your own range properly, why the highest note you can reach is the wrong number to record, and what the result tells you about song keys.
- Bass vocal range: E2 to E4The bass range runs roughly E2 to E4 — about 2.0 octaves — and here is how to tell whether it is actually yours.
- Baritone vocal range: A2 to A4The baritone range runs roughly A2 to A4 — about 2.0 octaves — and here is how to tell whether it is actually yours.
- Tenor vocal range: C3 to C5The tenor range runs roughly C3 to C5 — about 2.0 octaves — and here is how to tell whether it is actually yours.
- Alto vocal range: F3 to F5The alto range runs roughly F3 to F5 — about 2.0 octaves — and here is how to tell whether it is actually yours.
- Mezzo-soprano vocal range: A3 to A5The mezzo-soprano range runs roughly A3 to A5 — about 2.0 octaves — and here is how to tell whether it is actually yours.
- Soprano vocal range: C4 to C6The soprano range runs roughly C4 to C6 — about 2.0 octaves — and here is how to tell whether it is actually yours.
What the measurements mean
intent: measurement/explainer
- What is vocal jitter?Jitter measures cycle-to-cycle variation in the pitch period of a voice — what it indicates, what counts as normal, and why it appears in a singing report.
- What is vocal shimmer?Shimmer measures cycle-to-cycle variation in the amplitude of a voice — the loudness counterpart to jitter, and what an elevated reading means.
- What is harmonics-to-noise ratio (HNR)?HNR is how much of your voice is periodic tone versus turbulent noise, in decibels — the clearest single number for how clean a take is.
- What are cents in singing?A cent is a hundredth of a semitone — the unit every pitch accuracy measurement is stated in, and the one that makes "slightly flat" a number.