estimate_pitch_per_channel()

MAYAFLUX_API std::vector< double > MayaFlux::estimate_pitch_per_channel	(	const std::vector< Kakshya::DataVariant > &	channels,
		double	sample_rate = 48000.0,
		double	min_freq = 80.0,
		double	max_freq = 2000.0
	)

Estimate fundamental frequency per channel for multi-channel data.

Parameters

channels	Vector of channel 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

Vector of estimated F0 values in Hz, one per channel (0 if not detected)

Definition at line 751 of file Yantra.cpp.

{
    auto a = std::make_shared<Yantra::StandardEnergyAnalyzer>();
    a->set_energy_method(Yantra::EnergyMethod::HARMONIC);
    a->set_parameter("sample_rate", sample_rate);
    a->set_parameter("min_freq", min_freq);
    a->set_parameter("max_freq", max_freq);
    auto result = a->analyze_energy(channels);
    std::vector<double> pitches;
    pitches.reserve(result.channels.size());
 
    for (const auto& ch : result.channels) {
        pitches.push_back(ch.mean_energy * sample_rate / 1000.0);
    }
    return pitches;
}

References a, and MayaFlux::Yantra::HARMONIC.