Spectral ducking: when it beats static EQ
Dynamic spectral space is useful when the conflict exists mainly while the lead is active.
Diagnosis
- Identify the competing bus, not every track.
- Find the smallest band that changes intelligibility.
- Compare attack and release against syllables, not only the tempo grid.
Decision
- Start with shallow reduction.
- Trigger action only while the lead is present.
- Bypass at matched level every few changes.
Measurement boundary
Gain-reduction amount is not a quality score; use the minimum that resolves the collision.
Common failure: Fast, deep spectral ducking can imprint the vocal envelope onto the whole instrumental.