Struct Biquad 

pub struct Biquad {
    pub b0: f32,
    pub b1: f32,
    pub b2: f32,
    pub a1: f32,
    pub a2: f32,
    pub z1: f32,
    pub z2: f32,
    pub filter_type: BiquadType,
}

Second-order IIR biquad filter (Direct Form II Transposed).

Transfer function: H(z) = (b0 + b1·z⁻¹ + b2·z⁻²) / (1 + a1·z⁻¹ + a2·z⁻²)

Fields

b0: f32

b1: f32

b2: f32

a1: f32

a2: f32

z1: f32

z2: f32

filter_type: BiquadType

The kind of filter (informational).

Implementations

impl Biquad

pub fn new( b0: f32, b1: f32, b2: f32, a1: f32, a2: f32, filter_type: BiquadType, ) -> Self

Create a biquad from raw coefficients.

pub fn identity() -> Self

Identity (pass-through) biquad.

pub fn process_sample(&mut self, x: f32) -> f32

Process a single sample (Direct Form II Transposed).

pub fn process(&mut self, buffer: &mut [f32])

In-place block processing.

pub fn reset(&mut self)

Clear state variables.

pub fn magnitude_response(&self, omega: f32) -> f32

Frequency response magnitude at normalized frequency ω (0..π).

Trait Implementations

impl Clone for Biquad

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Biquad

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

Formats the value using the given formatter.