y = x * gain + offset, with gain allowed to go negative. More...

#include <mod_tools.hpp>

Public Member Functions
void	set_gain (SampleType g)
void	set_offset (SampleType o)
SampleType	process (SampleType x) const
SampleType	gain () const
SampleType	offset () const

Static Public Attributes
static constexpr SampleType	kMaxGain = SampleType{2}
	Beyond unity in both directions so one routing can also amplify — a 0..1 envelope driving a +/-2 octave pitch sweep is a single slot.

Detailed Description

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

y = x * gain + offset, with gain allowed to go negative.

RT contract: stateless apart from its two settings; everything is audio-thread safe.

USE: this is the depth control for every routing in a patch, and the negative half of its range is the point — inverting an envelope turns a swell into a duck, and inverting an LFO makes a second destination move against the first. offset re-centers: a unipolar envelope becomes bipolar with gain 2, offset -1, and a bipolar LFO becomes unipolar with gain 0.5, offset 0.5.