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class dft_resampler<T> convolution

template <typename T>
class dft_resampler { … }

function kaiser_beta_from_attenuation(T) 

static T kaiser_beta_from_attenuation(T att)

Computes Kaiser beta from desired stopband attenuation (dB). Uses the Kaiser formula (same as samplerate_converter::window_param).

Defined at dft/dft_resampler.hpp:116

function input_block_size() 

size_t input_block_size() const noexcept

Defined at dft/dft_resampler.hpp:125

function factor() 

size_t factor() const noexcept

Defined at dft/dft_resampler.hpp:126

function is_downsampling() 

bool is_downsampling() const noexcept

Defined at dft/dft_resampler.hpp:127

function filter_length() 

size_t filter_length() const noexcept

Defined at dft/dft_resampler.hpp:128

function output_block_size() 

size_t output_block_size() const noexcept

Defined at dft/dft_resampler.hpp:129

function input_hop() 

size_t input_hop() const noexcept

Defined at dft/dft_resampler.hpp:130

function output_hop() 

size_t output_hop() const noexcept

Defined at dft/dft_resampler.hpp:131

function reset() 

void reset() noexcept

Resets the resampler to its freshly-constructed state, clearing all buffered input without changing filter parameters.

Defined at dft/dft_resampler.hpp:137

function compute_block_size(size_t, T, T) 

static size_t compute_block_size(size_t upsample_factor, T stopband_atten_db, T transition_width)

Computes the minimal power-of-2 block size required for the given filter parameters (Kaiser formula).

Defined at dft/dft_resampler.hpp:148

constructor dft_resampler<T>(const dft_resampler_params &) 

explicit dft_resampler(const dft_resampler_params& params)

Parameters
params Resampler parameters.

Defined at dft/dft_resampler.hpp:164

function process_frame(const T *) 

T* process_frame(const T* input)

Defined at dft/dft_resampler.hpp:310

function process_frame(T *, const T *) 

void process_frame(T* output, const T* input)

Process one frame via overlap-save. FFTs m_input_buffer, applies spectral shaping, IFFTs, discards circular artefacts, writes valid output directly.

Defined at dft/dft_resampler.hpp:367

function process(int, int) 

size_t process(std::span<T> output, std::span<const T> input)

Process arbitrary-sized input and produce resampled output.

Parameters
input Input samples (any size).
output Output buffer. Must be large enough for all frames produced.
Returns
Number of output samples actually written.

Defined at dft/dft_resampler.hpp:380

Defined at dft/dft_resampler.hpp:84