Module elements 

WDF circuit elements — re-exported from pedalkernel-rt.

This module re-exports all element types, traits, and implementations from the pedalkernel-rt runtime crate. The canonical implementations live there (no_std compatible); this module adds model-DB-dependent lookup functions via crate::model_lookup.

Modules

nonlinear

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

Structs

AdsrEnvelope

ADSR envelope generator for controlling VCA/VCF.

AllPassFilter

First-order all-pass filter with variable cutoff frequency.

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.

Capacitor

Capacitor — energy-storage element.

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.

EnvelopeFollower

Envelope follower for dynamics-based modulation.

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.

Inductor

Inductor — energy-storage element.

JaCoreModel

JaMagnetizingRoot

JaState

JfetModel

JFET model parameters in standard SPICE Level 1 parameterization.

JfetRoot

JFET nonlinear root for WDF trees.

JfetVariableResistor

JFET operating as a voltage-controlled variable resistor.

Lfo

Low Frequency Oscillator for modulation effects.

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.

Phaser

Multi-stage all-pass phaser.

Photocoupler

Photocoupler element with Persyn-style two-rate CdS dynamics.

PhotocouplerModel

Photocoupler (Vactrol) model parameters.

PowerSupply

Power supply sag model for tube amp B+ rail behavior.

Resistor

Ideal resistor — absorbs everything, reflects nothing.

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.

SynthProcessor

A complete monophonic synth voice combining VCO, VCF, VCA, and ADSR.

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.

Vca

Exponential VCA modeled after the SSM2164/V2164.

Vcf

4-pole resonant lowpass filter modeled after the CEM3320/AS3320.

Vco

Audio-rate VCO modeled after the CEM3340/AS3340.

VoltageSource

Ideal voltage source (e.g. input signal injector).

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.

EnvelopeStage

ADSR envelope stages.

Interpolation

Interpolation mode for delay line read pointer.

LfoWaveform

LFO waveform shapes.

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.

RectifierType

Rectifier type — determines supply output impedance character.

VcoWaveform

VCO waveform outputs available from CEM3340-style oscillators.

Traits

ControlledResistance

Element with externally-controlled resistance.

Modulator

Modulation source that generates control signals.

WdfLeaf

One-port WDF leaf element (resistor, capacitor, inductor, voltage source).

WdfRoot

Nonlinear root element that terminates the WDF tree.

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.