Enum DspFftWindow

#[repr(C)]
pub enum DspFftWindow {
    Rect = 0,
    Triangle = 1,
    Hamming = 2,
    Hanning = 3,
    BlackMan = 4,
    BlackManHarris = 5,
    Max = 6,
    ForceInt = 65_536,
}

List of windowing methods used in spectrum analysis to reduce leakage / transient signals intefering with the analysis. This is a problem with analysis of continuous signals that only have a small portion of the signal sample (the fft window size). Windowing the signal with a curve or triangle tapers the sides of the fft window to help alleviate this problem.

Variants

Rect = 0

w[n] = 1.0

Triangle = 1

w[n] = TRI(2n/N)

Hamming = 2

w[n] = 0.54 - (0.46 * COS(n/N) )

Hanning = 3

w[n] = 0.5 * (1.0 - COS(n/N) )

BlackMan = 4

w[n] = 0.42 - (0.5 * COS(n/N) ) + (0.08 * COS(2.0 * n/N) )

BlackManHarris = 5

w[n] = 0.35875 - (0.48829 * COS(1.0 * n/N)) + (0.14128 * COS(2.0 * n/N)) - (0.01168 * COS(3.0 * n/N))

Max = 6

Maximum number of FFT window types supported.

ForceInt = 65_536

Makes sure this enum is signed 32bit.

Trait Implementations

impl Clone for DspFftWindow

fn clone(&self) -> DspFftWindow

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DspFftWindow

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

Formats the value using the given formatter.

impl PartialEq for DspFftWindow

fn eq(&self, other: &DspFftWindow) -> 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 PartialOrd for DspFftWindow

fn partial_cmp(&self, other: &DspFftWindow) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Copy for DspFftWindow

impl StructuralPartialEq for DspFftWindow