Enum Band 

pub enum Band {
    Rectangular {
        start: f64,
        end: f64,
    },
    RaisedCosine {
        start: f64,
        end: f64,
        transition: f64,
    },
    Kaiser {
        start: f64,
        end: f64,
        beta: f64,
    },
    Gaussian {
        start: f64,
        end: f64,
        sigma: f64,
    },
}

A frequency-domain window: which bins survive a reconstruction, and how sharply the surviving band ends.

Every shape is zero outside start..=end. They differ in what happens inside it, which is the difference between a brick-wall filter and one whose edges do not ring.

Variants

Rectangular

A brick wall: full pass inside the band, nothing outside it.

Fields

start: f64

The lowest frequency the band keeps, in Hz.

end: f64

The highest frequency the band keeps, in Hz.

RaisedCosine

Raised-cosine edges of a stated width, flat in between.

Fields

start: f64

The lowest frequency the band keeps, in Hz.

end: f64

The highest frequency the band keeps, in Hz.

transition: f64

The width of each cosine edge, in Hz.

Kaiser

A Kaiser shape, whose beta trades edge width against sidelobe height.

Fields

start: f64

The lowest frequency the band keeps, in Hz.

end: f64

The highest frequency the band keeps, in Hz.

beta: f64

The shape parameter: larger is smoother and wider-edged.

Gaussian

A Gaussian shape of a stated standard deviation, centred in the band.

Fields

start: f64

The lowest frequency the band keeps, in Hz.

end: f64

The highest frequency the band keeps, in Hz.

sigma: f64

The standard deviation, in Hz.

Implementations

impl Band

pub fn coefficient(&self, frequency: f64) -> f64

What fraction of one bin at frequency this band lets through, 0.0..=1.0.

pub fn bounds(&self) -> (f64, f64)

The band’s frequency bounds, in Hz.

Trait Implementations

impl Clone for Band

fn clone(&self) -> Band

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Band

impl Debug for Band

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

Formats the value using the given formatter.

impl PartialEq for Band

fn eq(&self, other: &Band) -> 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 Band