Pre/post tone shaping around the clipper: a two-pole tilt pair. More...

#include <distortion.hpp>

Public Member Functions
void	prepare (double sample_rate)
void	set_pre_tone_hz (double hz)
void	set_post_tone_hz (double hz)
void	set_pre_gain_db (double db)
	Pre-emphasis shelf gain in dB.
void	set_tone_mix (double mix01)
	Linear crossfade of the shaped stage against its bypass.
void	reset ()
SampleType	process_pre (SampleType input)
	The pre-emphasis stage: a high shelf built from the one-pole's complementary outputs, so a gain of 1 is exactly flat by construction rather than to within a fitted tolerance.
SampleType	process_post (SampleType input)
	The post stage: a plain one-pole low-pass, the de-fizz.

Static Public Attributes
static constexpr double	kPreGainDbMax = 12.0
	Pre-emphasis shelf gain.

Detailed Description

template<typename SampleType = float>
class pulp::signal::ToneStackT< SampleType >

Pre/post tone shaping around the clipper: a two-pole tilt pair.

Deliberately NOT a full three-band passive stack — a literal Baxandall/TMB network has its own interacting-pole topology and is its own module. What this is for:

pre shapes what the clipper SEES. Rolling lows off before the clip emphasises high-harmonic buzz; rolling highs off keeps the fundamental dominant through the nonlinearity. Standard pre-emphasis practice.
post is the de-fizz stage every distortion needs after harmonic generation. For the to-ground topology this is the shunt capacitor's corner made externally controllable; for in-loop the equivalent corner is buried inside the feedback network, so exposing it here gives both topologies the same control.

Both stages are the house TPT one-pole; the filter math is not re-derived.

RT contract: as the clippers. No allocation, no locks.