spectral_gate()

std::vector< double > MayaFlux::Kinesis::Discrete::spectral_gate	(	std::span< const double >	src,
		double	threshold_db,
		uint32_t	window_size = 1024,
		uint32_t	hop_size = 256
	)

Hard spectral gate: zero bins whose magnitude is below the threshold.

Parameters

src	Input samples
threshold_db	Gate threshold in dBFS; bins below are zeroed
window_size	FFT frame size
hop_size	Analysis hop

Returns

Gated output

Definition at line 172 of file Spectral.cpp.

{
    const double lin = std::pow(10.0, threshold_db / 20.0);
 
    return apply_spectral(src, window_size, hop_size,
        [lin](std::vector<std::complex<double>>& spec, size_t) {
            for (auto& bin : spec) {
                if (std::abs(bin) < lin)
                    bin = {};
            }
        });
}

References apply_spectral().

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