pulp::host::modulation::phaser Namespace Reference

Classes
struct	Instance

Typedefs
using	Engine = signal::PhaserStages

Functions
signal::LfoWave	wave_from_param (float value)
	Decodes the stepped wave param.
std::string	phaser_type_id (int stages)
float	phaser_worst_case_gain ()
	Worst-case linear gain for the Forge registry (series law 8).
CustomNodeType	make_phaser_node (int stages=Engine::kStageCountDefault)
	A swept allpass cascade as a lowerable custom node.

Variables
constexpr state::ParamID	kRateHz = 1
constexpr state::ParamID	kDepth = 2
constexpr state::ParamID	kCenterHz = 3
constexpr state::ParamID	kFeedback = 4
constexpr state::ParamID	kMix = 5
constexpr state::ParamID	kStereoSpread = 6
constexpr state::ParamID	kStaggerRatio = 7
constexpr state::ParamID	kWave = 8
constexpr double	kRateMinHz = 0.02
	The registered rate span, in Hz — the DSP's documented single-pot range.
constexpr double	kRateMaxHz = 10.0
constexpr double	kCenterMinHz = 20.0
	The registered centre-frequency span, in Hz.
constexpr double	kCenterMaxHz = 5000.0
constexpr float	kWaveSine = 0.0f
	The wave param's stepped encoding, in LfoWave's own declaration order so the two cannot drift apart.
constexpr float	kWaveTriangle = 1.0f
constexpr float	kWaveSawUp = 2.0f
constexpr float	kWaveSawDown = 3.0f
constexpr float	kWaveSquare = 4.0f
constexpr float	kWaveSampleHold = 5.0f
constexpr float	kWaveSmoothRandom = 6.0f

Typedef Documentation

Engine

using pulp::host::modulation::phaser::Engine = signal::PhaserStages

Function Documentation

make_phaser_node()

CustomNodeType pulp::host::modulation::phaser::make_phaser_node

(

int

stages = Engine::kStageCountDefault

)

A swept allpass cascade as a lowerable custom node.

stages is a REGISTRATION-TIME REALIZATION. Latency is zero at every count, so — as with the chorus — the latency rule is not what forces it. The notch law is: the module publishes notch_frequency_hz(k, stages, fc, fs) and notch_count(stages), both taking the stage count as an ARGUMENT, which is the same shape as the diode-bridge compressor's separate static_curve_feedback_db() — the measured response is a different function per count, not a different value of one function. Automating it would move the number of notches under a user who is listening to them.

The count is also rounded down to even inside the DSP, so half the values a param would accept are not distinct settings.

wave DOES inject, including the two stochastic shapes: it selects which shape one unchanged LFO evaluates, changes no state and no latency, and is a front-panel switch on several of the units this models.

phaser_type_id()

std::string pulp::host::modulation::phaser::phaser_type_id

(

int

stages

)

phaser_worst_case_gain()

float pulp::host::modulation::phaser::phaser_worst_case_gain

(

)

Worst-case linear gain for the Forge registry (series law 8).

The topology has a feedback path, so this is a loop bound rather than a constructive sum: 1/(1 − kFeedbackMax). The DSP publishes it as a constexpr and its suite asserts realised gain stays under it, so this reports rather than re-derives — and it is independent of stage count, because the cascade inside the loop is allpass.

wave_from_param()

signal::LfoWave pulp::host::modulation::phaser::wave_from_param ( float value )

inline

Decodes the stepped wave param.

Rounds rather than truncates, so a host ramping to a stepped value lands on the nearest step instead of sitting on the one below it for the whole ramp.

Variable Documentation

kCenterHz

state::ParamID pulp::host::modulation::phaser::kCenterHz = 3

inlineconstexpr

kCenterMaxHz

double pulp::host::modulation::phaser::kCenterMaxHz = 5000.0

inlineconstexpr

kCenterMinHz

double pulp::host::modulation::phaser::kCenterMinHz = 20.0

inlineconstexpr

The registered centre-frequency span, in Hz.

kDepth

state::ParamID pulp::host::modulation::phaser::kDepth = 2

inlineconstexpr

kFeedback

state::ParamID pulp::host::modulation::phaser::kFeedback = 4

inlineconstexpr

kMix

state::ParamID pulp::host::modulation::phaser::kMix = 5

inlineconstexpr

kRateHz

state::ParamID pulp::host::modulation::phaser::kRateHz = 1

inlineconstexpr

kRateMaxHz

double pulp::host::modulation::phaser::kRateMaxHz = 10.0

inlineconstexpr

kRateMinHz

double pulp::host::modulation::phaser::kRateMinHz = 0.02

inlineconstexpr

The registered rate span, in Hz — the DSP's documented single-pot range.

kStaggerRatio

state::ParamID pulp::host::modulation::phaser::kStaggerRatio = 7

inlineconstexpr

kStereoSpread

state::ParamID pulp::host::modulation::phaser::kStereoSpread = 6

inlineconstexpr

kWave

state::ParamID pulp::host::modulation::phaser::kWave = 8

inlineconstexpr

kWaveSampleHold

float pulp::host::modulation::phaser::kWaveSampleHold = 5.0f

inlineconstexpr

kWaveSawDown

float pulp::host::modulation::phaser::kWaveSawDown = 3.0f

inlineconstexpr

kWaveSawUp

float pulp::host::modulation::phaser::kWaveSawUp = 2.0f

inlineconstexpr

kWaveSine

float pulp::host::modulation::phaser::kWaveSine = 0.0f

inlineconstexpr

The wave param's stepped encoding, in LfoWave's own declaration order so the two cannot drift apart.

kWaveSmoothRandom

float pulp::host::modulation::phaser::kWaveSmoothRandom = 6.0f

inlineconstexpr

kWaveSquare

float pulp::host::modulation::phaser::kWaveSquare = 4.0f

inlineconstexpr

kWaveTriangle

float pulp::host::modulation::phaser::kWaveTriangle = 1.0f

inlineconstexpr