estimate_pitch() [2/2]

MAYAFLUX_API double MayaFlux::estimate_pitch	(	const std::vector< double > &	data,
		double	sample_rate = 48000.0,
		double	min_freq = 80.0,
		double	max_freq = 2000.0
	)

Estimate fundamental frequency using autocorrelation for single-channel data.

Parameters

data	Input signal data
sample_rate	Sample rate (default: 48000 Hz)
min_freq	Minimum expected frequency (default: 80 Hz)
max_freq	Maximum expected frequency (default: 2000 Hz)

Returns

Estimated F0 in Hz (0 if not detected)

Definition at line 757 of file Yantra.cpp.

{
    auto energy_analyzer = std::make_shared<Yantra::StandardEnergyAnalyzer>();
    energy_analyzer->set_energy_method(Yantra::EnergyMethod::HARMONIC);
    energy_analyzer->set_parameter("sample_rate", sample_rate);
    energy_analyzer->set_parameter("min_freq", min_freq);
    energy_analyzer->set_parameter("max_freq", max_freq);
    auto result = energy_analyzer->analyze_energy({ Kakshya::DataVariant(data) });
 
    return result.channels.empty() ? 0.0 : result.channels[0].mean_energy * sample_rate / 1000.0;
}

References MayaFlux::Yantra::HARMONIC.