Module nonlinear 

Nonlinear WDF root elements: Diodes, JFETs, MOSFETs, Zener diodes, OTAs.

These elements sit at the tree root and use Newton-Raphson iteration to solve the implicit WDF constraint equation for the reflected wave.

Also includes the slew rate limiter (models op-amp bandwidth limiting), OTA (operational transconductance amplifier) for CA3080-based circuits, and delay line implementations (BBD and generic).

Modules

diode

Diode WDF root elements: silicon, germanium, LED, zener.

solver

Shared Newton-Raphson solver and numerical utilities for nonlinear WDF roots.

Structs

BbdDelayLine

BBD delay line processor.

BbdModel

BBD delay line model parameters.

BjtGummelPoonRoot

3-port R-type adaptor for Gummel-Poon BJT.

BjtRoot

BJT as a single-port WDF root (like TriodeRoot for tubes).

BjtTwoPort

2-port BJT for the multi-NL grouped solver.

DelayLine

Generic delay line: a ring buffer with WDF-compatible ports.

DiffPairRoot

Diff-pair macromodel for ladder filter stages (Moog/303/Korg).

DiodeModel

Diode model parameters derived from the Shockley equation.

DiodePairRoot

Anti-parallel diode pair at the tree root.

DiodeRoot

Single diode at the tree root (asymmetric clipping).

EbersMollTwoPort

Simplified Ebers-Moll BJT model for deterministic-cost NR evaluation.

ExplicitDiodePairRoot

Anti-parallel diode pair WDF root using the explicit Wright Omega solver.

ExplicitDiodeRoot

Single diode WDF root using the explicit Wright Omega solver.

FeedbackConfig

Configuration for a feedback pot in an op-amp gain stage.

GummelPoonModel

Gummel-Poon BJT model parameters.

JaCoreModel

JaMagnetizingRoot

JaState

JfetModel

JFET model parameters in standard SPICE Level 1 parameterization.

JfetRoot

JFET nonlinear root for WDF trees.

MosfetModel

Enhancement-mode MOSFET model parameters.

MosfetRoot

Enhancement-mode MOSFET nonlinear root for WDF trees.

OpAmpModel

Op-amp model parameters for WDF integration.

OpAmpRoot

Models op-amp behavior in two topologies:

OtaModel

CA3080 OTA model parameters.

OtaRoot

OTA nonlinear root for WDF trees.

PentodeModel

Pentode model parameters using a screen-referenced Koren equation.

PentodeRoot

Pentode nonlinear root for WDF trees.

PentodeThreePort

3-port Koren pentode for use with the grouped multi-port NR solver.

SlewRateLimiter

Models op-amp slew rate limiting for physically accurate WDF processing.

SolverStatsSnapshot

SolverTraceEntry

A single entry in the solver trace buffer, recorded per NR solve call.

SpringModel

Named spring-tank model parameters (Accutronics / RE-201 grounded).

SpringTank

Spring reverb tank: a sum of detuned dispersive [SpringLine]s with an output DC blocker and a per-instance dwell/drive input trim.

Tap

A read-only tap into a DelayLine.

TapeHeadVoltageRoot

TriodeModel

Triode model parameters using the Koren equation.

TriodeRoot

Triode nonlinear root for WDF trees.

TriodeThreePort

3-port Koren triode for use with the grouped multi-port NR solver.

VariMuModel

Variable-mu triode model parameters using the Raffensperger equation.

VariMuThreePort

3-port variable-mu triode for use with the grouped multi-port NR solver.

VariMuTriodeRoot

Variable-mu triode nonlinear root for WDF trees.

WdfJaMagnetizing

WdfTapeHeadVoltage

ZenerModel

Zener diode model parameters.

ZenerPairRoot

Anti-parallel zener pair at the tree root.

ZenerRoot

Zener diode at the tree root.

ZoneBoundary

A zone boundary along the virtual delay path.

Enums

DiodeSolverMethod

Per-instance diode solver method selector.

Interpolation

Interpolation mode for delay line read pointer.

Medium

Physical storage medium model for the delay buffer.

MediumPreset

Pre-configured medium settings for common tape echo models.

OpAmpMode

Op-amp nonlinear root for WDF trees.

Functions

bbd_soft_clip

BBD soft clipping characteristic.

disable_grouped_residual_log

Disable per-iteration residual logging and return the accumulated residuals.

disable_solver_trace

Disable per-solve tracing and return the accumulated trace entries. Returns an empty vec if tracing was not enabled.

enable_grouped_residual_log

Enable per-iteration residual logging for the grouped solver (std + test diagnostic). Each grouped-NR iteration appends its residual norm so callers can assert the Armijo line search produces a monotone non-increasing residual. Call disable_grouped_residual_log to retrieve the buffer.

enable_solver_trace

Enable per-solve tracing. Each NR solve will append a SolverTraceEntry to an internal buffer pre-allocated with capacity entries. Call disable_solver_trace() to retrieve and consume the buffer.

explicit_diode_pair

Explicit closed-form reflected wave for an anti-parallel diode pair.

explicit_single_diode

Explicit closed-form reflected wave for a single diode.

reset_solver_stats

solver_stats_snapshot

tape_saturation

Tape magnetic hysteresis saturation.

wright_omega

Compute the Wright Omega function ω(x), the real branch of the solution to ω + ln(ω) = x.