Struct Spectrum 

pub struct Spectrum {
    pub step: f64,
    pub real: Vec<f64>,
    pub imag: Vec<f64>,
}

One single-window transform: a bin step, and a complex amplitude per bin.

The bins run from DC upwards in steps of step, and the last one is Nyquist. Amplitude normalization is already applied, so magnitude of a bin is the amplitude of the component that landed there and not a quantity awaiting a scale factor.

The fields are public because this is a record and not an owner: a caller with a spectrum of its own builds one to call reconstruct, and a caller that received one destructures it into whatever it keeps its data in.

Fields

step: f64

The frequency distance between neighbouring bins, in Hz.

real: Vec<f64>

The real part of each bin.

imag: Vec<f64>

The imaginary part of each bin.

Implementations

impl Spectrum

pub fn rate(&self) -> f64

The sampling rate the samples behind this spectrum were taken at, in Hz.

Derived, not remembered: a single-sided spectrum of bins bins came from (bins - 1) * 2 samples, which is also the length reconstruct answers with.

Trait Implementations

impl Clone for Spectrum

fn clone(&self) -> Spectrum

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Spectrum

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

Formats the value using the given formatter.

impl PartialEq for Spectrum

fn eq(&self, other: &Spectrum) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for Spectrum