Struct Spectrum 

pub struct Spectrum {
    pub bins: Vec<Complex32>,
    pub fft_size: usize,
}

Post-FFT frequency-domain representation.

Fields

bins: Vec<Complex32>

Complex FFT bins (full N/2+1 half-spectrum or full N).

fft_size: usize

The FFT size used.

Implementations

impl Spectrum

pub fn new(bins: Vec<Complex32>, fft_size: usize) -> Self

pub fn from_real(signal: &[f32]) -> Self

Compute from real signal. Uses RealFft internally.

pub fn num_bins(&self) -> usize

Number of bins (N/2+1 for real input).

pub fn magnitude(&self, k: usize) -> f32

Magnitude of bin k.

pub fn phase(&self, k: usize) -> f32

Phase of bin k in radians.

pub fn power(&self, k: usize) -> f32

Power of bin k (magnitude²).

pub fn frequency_of_bin(&self, k: usize, sample_rate: f32) -> f32

Frequency of bin k given sample rate.

pub fn magnitude_spectrum(&self) -> Vec<f32>

All magnitudes.

pub fn power_spectrum(&self) -> Vec<f32>

Power spectrum (magnitude²).

pub fn to_db(&self, floor_db: f32) -> Vec<f32>

dBFS spectrum with noise floor.

pub fn dominant_frequency(&self, sample_rate: f32) -> f32

Frequency of the dominant (peak) bin.

pub fn spectral_centroid(&self, sample_rate: f32) -> f32

Spectral centroid — weighted mean frequency.

pub fn spectral_spread(&self, sample_rate: f32) -> f32

Spectral spread — weighted standard deviation of frequency.

pub fn spectral_flux(&self, other: &Spectrum) -> f32

Spectral flux: sum of positive differences between consecutive frames.

pub fn spectral_flatness(&self) -> f32

Spectral flatness (Wiener entropy): geometric mean / arithmetic mean.

pub fn spectral_rolloff(&self, threshold: f32) -> f32

Spectral rolloff: frequency below which threshold fraction of energy is contained.

pub fn spectral_rolloff_hz(&self, threshold: f32, sample_rate: f32) -> f32

Spectral rolloff frequency in Hz (not normalized).

pub fn to_signal(&self) -> Vec<f32>

Reconstruct the time-domain signal via IFFT.

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.