modal_bank.hpp File Reference

#include <pulp/signal/denormal.hpp>
#include <pulp/signal/simd_buffer.hpp>
#include <algorithm>
#include <cmath>
#include <span>

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Classes
struct	pulp::signal::ModalMode
	One resonant mode of a vibrating object: frequency, decay time, and impulse-response amplitude. More...
struct	pulp::signal::ModalShape
	The spatial eigenfunction of one mode along a body's normalized length coordinate x in [0, 1]: phi(x) = sin(pi * half_waves * x + end_phase). More...
class	pulp::signal::ModalBankT< SampleType >
	Bank of two-pole modal resonators, stored structure-of-arrays in lane groups so the per-sample state update auto-vectorizes across modes. More...

Namespaces
namespace	pulp
namespace	pulp::signal

Typedefs
using	pulp::signal::ModalBank = ModalBankT<float>
using	pulp::signal::ModalBank64 = ModalBankT<double>

Functions
template<typename SampleType = float>
void	pulp::signal::fill_strike_pulse (std::span< SampleType > dst, SampleType velocity)
	Fill dst with a raised-cosine contact pulse, peak-normalized to velocity.
float	pulp::signal::mode_shape_at (const ModalShape &shape, float position)
	Evaluate a mode's shape at a normalized position along the body.
void	pulp::signal::fill_ideal_string_shapes (std::span< ModalShape > dst)
	Fill dst with the mode shapes of an ideal string fixed at both ends: dst[i] describes the (i+1)-th transverse mode, phi_m(x) = sin(m*pi*x), whose nodes are at x = k/m.
template<typename SampleType = float>
void	pulp::signal::fill_mode_weights (std::span< SampleType > dst, std::span< const ModalShape > shapes, float position)
	Sample every shape in shapes at position, writing phi_m(position) to dst.