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PowerSpectralDensity

oxiphysics_core::signal_analysis

Struct PowerSpectralDensity 

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pub struct PowerSpectralDensity {
    pub frequencies: Vec<f64>,
    pub power: Vec<f64>,
    pub fs: f64,
    pub window_len: usize,
}
Expand description

Power Spectral Density estimate via Welch’s method.

The signal is divided into overlapping segments, each windowed with a Hann window and FFT’d, and the resulting periodograms are averaged.

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§frequencies: Vec<f64>

Frequency bins (Hz).

§power: Vec<f64>

PSD values at each frequency bin.

§fs: f64

Sampling frequency (Hz).

§window_len: usize

FFT window length used.

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impl PowerSpectralDensity

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pub fn welch(signal: &[f64], fs: f64, window_len: usize, overlap: f64) -> Self

Estimate PSD using Welch’s method.

fs is the sampling frequency. window_len is the segment length (will be rounded to power-of-two). overlap in [0, 1) fraction of the window to overlap.

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pub fn freq_resolution(&self) -> f64

Return the frequency resolution (Hz per bin).

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pub fn dominant_frequency(&self) -> f64

Return the dominant frequency (frequency bin with maximum power).

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pub fn total_power(&self) -> f64

Compute total power (integral of PSD over all frequencies).

Trait Implementations§

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impl Clone for PowerSpectralDensity

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fn clone(&self) -> PowerSpectralDensity

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for PowerSpectralDensity

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
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