SonaLab - 实时声乐分析软件
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Tongue Retraction

舌根后缩

Vocal Science Principle

Tongue root retraction (Knödel) — the tongue root pulls back, restricting the resonance space in the pharynx.

Detection criteria:

  • tongueFrontBack parameter exceeds threshold (default > 0.5)
  • tongueFrontBack scale: -1 = front, 0 = center, 1 = back

    • When the tongue is positioned too far back, it compresses the pharyngeal space, resulting in a dark, muffled tone quality.

    Justin's Note

    舌根后缩会压缩咽腔空间，导致声音闷暗