pub const HARMONIC_FLOOR_DBC: f64 = -80.0;Expand description
A golden harmonic weaker than this (relative to the fundamental) is treated as absent (below the simulator noise grass): its per-harmonic error is not scored for the verdict, so ngspice noise bins don’t masquerade as shape error. −80 dBc sits above ngspice’s typical noise grass yet below a real diode/BJT harmonic.