transform_spectral_invert() [1/2]

template<OperationReadyData DataType>

DataType MayaFlux::Yantra::transform_spectral_invert	(	DataType &	input,
		uint32_t	window_size,
		uint32_t	hop_size,
		std::vector< std::vector< double > > &	working_buffer
	)

Spectral inversion (phase inversion in frequency domain) using C++20 ranges (OUT-OF-PLACE)

Template Parameters

DataType

OperationReadyData type

Parameters

input	Input data - will NOT be modified
window_size	FFT window size
hop_size	Hop size for overlap-add
working_buffer	Buffer for operations (will be resized if needed)

Returns

Spectrally inverted data

Definition at line 397 of file SpectralHelper.hpp.

{
    auto [target_data, structure_info] = OperationHelper::setup_operation_buffer(input, working_buffer);
 
    auto processor = [](Eigen::VectorXcd& spectrum, size_t) {
        std::ranges::transform(spectrum, spectrum.begin(),
            [](const std::complex<double>& bin) { return std::conj(bin); });
    };
 
    working_buffer.resize(target_data.size());
    for (size_t i = 0; i < target_data.size(); ++i) {
        working_buffer[i] = process_spectral_windows(target_data[i], window_size, hop_size, processor);
    }
 
    return OperationHelper::reconstruct_from_double<DataType>(working_buffer, structure_info);
}

References process_spectral_windows(), and MayaFlux::Yantra::OperationHelper::setup_operation_buffer().

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