Ui::Monitor::SpectrumAnalysis Struct Reference

Public Member Functions
void	prepare (int n, double sample_rate, Window w)
template<typename T >
void	analyse (const T *x) noexcept
	Analyses size samples; x must hold at least that many.
double	binFrequency (double bin) const noexcept
double	frequencyBin (double f) const noexcept
double	enbw () const noexcept
double	bandPower (std::span< const double > p, double f0, double f1) const noexcept
double	bandPower (double f0, double f1) const noexcept

Public Attributes
int	size {}
double	rate {48000.}
ossia::fft	fft {16}
std::vector< double >	window
double	coherent_gain {1.}
double	sum_sq {1.}
Window	kind {}
std::vector< double >	power

Member Function Documentation

bandPower()

double Ui::Monitor::SpectrumAnalysis::bandPower ( std::span< const double >  p, double  f0, double  f1  ) const

inlinenoexcept

Energy of the bins of p (a spectrum of this analysis, averaged or not) between two frequencies, as the level a sine of that power would read: the window's equivalent noise bandwidth is divided out.

enbw()

double Ui::Monitor::SpectrumAnalysis::enbw ( ) const

inlinenoexcept

Equivalent noise bandwidth of the window, in bins: a sine's power spreads over that many bins of power.

Member Data Documentation

power

std::vector<double> Ui::Monitor::SpectrumAnalysis::power

Power of each bin, normalized so that 10 log10 of it is the level in dBFS of a sine centred on that bin.

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

• SpectrumAnalysis.hpp