pulp::test::audio::ModulationSidebandOptions Struct Reference

Options for measure_modulation_sidebands. More...

#include <audio_spectrum.hpp>

Public Attributes
int	max_order = 8
	Lines counted as the modulation's own: the carrier +/- k times the modulation frequency for k = 1..max_order.
double	tolerance_bins = 8.0
	Half-width of each expected line, in bins: the window's main lobe, so a line's own skirt is counted as the line and not as residual.
double	band_low_hz = 20.0
	The residual is summed over [band_low_hz, band_high_hz].
double	band_high_hz = 20000.0
Window	window = Window::kaiser
	A Kaiser window: a Hann window's side lobes (-31 dB, falling 18 dB an octave) around a carrier that is not bin-centred sum to a -40 dB "residual" with nothing there, which is the floor a Hann measurement of this kind has.
double	kaiser_beta = kDefaultKaiserBeta
int	fft_length = 65536
int	analysis_offset = 0
	Samples skipped (settling / plugin latency).
int	channel = 0

Detailed Description

Options for measure_modulation_sidebands.

Member Data Documentation

analysis_offset

int pulp::test::audio::ModulationSidebandOptions::analysis_offset = 0

Samples skipped (settling / plugin latency).

band_high_hz

double pulp::test::audio::ModulationSidebandOptions::band_high_hz = 20000.0

band_low_hz

double pulp::test::audio::ModulationSidebandOptions::band_low_hz = 20.0

The residual is summed over [band_low_hz, band_high_hz].

channel

int pulp::test::audio::ModulationSidebandOptions::channel = 0

fft_length

int pulp::test::audio::ModulationSidebandOptions::fft_length = 65536

kaiser_beta

double pulp::test::audio::ModulationSidebandOptions::kaiser_beta = kDefaultKaiserBeta

max_order

int pulp::test::audio::ModulationSidebandOptions::max_order = 8

Lines counted as the modulation's own: the carrier +/- k times the modulation frequency for k = 1..max_order.

tolerance_bins

double pulp::test::audio::ModulationSidebandOptions::tolerance_bins = 8.0

Half-width of each expected line, in bins: the window's main lobe, so a line's own skirt is counted as the line and not as residual.

window

Window pulp::test::audio::ModulationSidebandOptions::window = Window::kaiser

A Kaiser window: a Hann window's side lobes (-31 dB, falling 18 dB an octave) around a carrier that is not bin-centred sum to a -40 dB "residual" with nothing there, which is the floor a Hann measurement of this kind has.

The Kaiser at the default beta reads below -100 dB.

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The documentation for this struct was generated from the following file:

• /home/runner/work/pulp/pulp/tools/audio/analysis/include/pulp/audio/analysis/audio_spectrum.hpp