Fixed-depth linear-phase half-band oversampling around a per-sample callback. More...

#include <hysteresis.hpp>

Public Member Functions
void	prepare ()
void	reset () noexcept
template<typename Callback>
double	process (double x, Callback &&callback)

Static Public Member Functions
static constexpr int	oversampling_factor () noexcept
static int	latency_samples () noexcept
	Group delay of the complete up/down cascade, in host samples.

Detailed Description

template<std::size_t StageCount>
class pulp::signal::chardelay::HysteresisHalfBandOversampler< StageCount >

Fixed-depth linear-phase half-band oversampling around a per-sample callback.

Each stage doubles the rate using the house 65-tap / Kaiser β ≈ 8 design. The cascade's group delay is a fixed integer number of host samples, which is exactly what lets the module keep latency_samples() == 0: the constant is subtracted from the delay line's read distance instead of being reported to the host, so echo timing stays right and the loop's total delay is unchanged.