Weeks 7-8 · voice · onset + sustained vowel
Crack the consonant. Land the vowel. Don’t smear.
The rule
pass: onset ≤ ±30 ms · vowel ≥ 200 ms inside ±35¢
Four metronome beats at 80 bpm. The emerald envelope spikes sharply at each beat (the consonant), then flattens into a plateau inside the ±35¢ pitch tolerance band (the vowel). The grey trace shows the failure mode: a ramped, smeared attack — typical of a soft “m” or “p” that leaks breath — followed by a wobbly vowel that can’t commit to its pitch.
Hear it first
First clip: a crisp “ma-pa-ta-ka” on a single pitch — punchy consonants, every vowel locked. Second clip: the same syllables with mushy, late-arriving consonants. Third: consonants in time, but the vowel pitch wobbles after each attack. Both failures count.
What’s happening.Consonants are short bursts of airflow or pressure that occur before the vowel takes over. They have to fire fast (the lips/tongue stroke takes ~50 ms) and then get out of the way so the vowel resonance can settle. Untrained speakers often pre-onset the vowel — the jaw is open and the cords are voicing before the consonant articulates, which produces a smeared attack and an undefined vowel start. We’re training the clean handoff.
Why ma-pa-ta-ka.These four syllables cover the cardinal places of consonant articulation: bilabial nasal (“m”), bilabial stop (“p”), alveolar stop (“t”), velar stop (“k”). If your onset is clean across all four, the muscle system can produce it anywhere. The ±30ms onset window is tight enough that breath-leaky consonants can’t hide in it; the 200 ms vowel sustain is short enough to fit four of them in 3 seconds.
Why this is the bridge to lyric singing. Every word has consonants. Two-syllable-legato downstream assumes you can articulate the consonants without disturbing the vowel underneath; verse-breath-plan and a-cappella-resolve-tonic assume the same. If consonants and vowels are still tangled here, lyric phrases later will smear at every word boundary.
Session ahead
5 trials at 80 bpm · 4-beat count-in then ma-pa-ta-ka on the next 4 · 4/5 clean trials promotes.