Linear Ramp Generator
Overview
The linear upward ramp generator, lin_upward_ramp_gen generates a linearly increasing amplitude from 0.0 to 1.0 specified by the duration (width) and samples per second (sps parameters. This is essentially a basic straight ramp from 0.0 to 1.0.
lin_downward_ramp_gen is the inverse of the linear upward ramp generator. This is essentially a basic straight ramp from 1.0 to 0.0.
hold_line_gen is an infinitely wide straight horizontal line at 1.0.
The Q DSP library utilizes the linear ramp generators for generating complex envelopes.
Declaration
struct lin_upward_ramp_gen
{
lin_upward_ramp_gen(duration width, float sps);
float operator()();
void config(duration width, float sps);
void reset();
};
struct lin_downward_ramp_gen : lin_upward_ramp_gen
{
lin_downward_ramp_gen(duration width, float sps);
float operator()();
};
struct hold_line_gen
{
hold_line_gen(duration width, float sps);
float operator()();
void config(duration width, float sps);
void reset();
};