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Insufficient Thickness

收缩力不够

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In the low range the folds stay too thin and lack mass; the voice sounds thin and weightless.

In One Sentence

In the low range the folds are too thin and lack mass, so the voice sounds thin and light.

How to Read It

In the low range (roughly F0 < 250Hz), watch the H1-H2 chart. If H1-H2 stays high (> 8dB), the folds are already too thin in the low range — the contraction (TA) is insufficient.

Why Does This Happen?

CauseDescription
Under-activated contractionThe thyroarytenoid isn't contracting enough to keep the folds thick
Habitual head voice / falsettoSinging the low range in a thin mode out of habit
Fold characteristicsThe folds are naturally thinner, with less chest-voice mass

How to Improve

  • Gug arpeggios: the "g" consonant helps closure and keeps quality in the low range
  • Low-range slides: practice keeping thickness and weight down low
  • Dark vowels (O/A): open vowels add fold mass in the low range
  • Related

  • Fold Balance — H1-H2 thickness balance
  • Weak Stretch (CT)
  • Vocal Fold Closure