Struct BiquadFilter 

pub struct BiquadFilter { /* private fields */ }

Second-order (biquad) IIR filter.

Implements the standard biquad difference equation:

y[n] = b0*x[n] + b1*x[n-1] + b2*x[n-2] - a1*y[n-1] - a2*y[n-2]

Coefficients are normalized (a0 = 1).

Implementations

impl BiquadFilter

pub fn highpass_butterworth(cutoff_hz: f32, sample_rate: u32) -> Self

Create a second-order Butterworth high-pass filter.

Arguments

• cutoff_hz - Cutoff frequency in Hz
• sample_rate - Sample rate in Hz

Panics

Panics if cutoff_hz >= sample_rate / 2 (Nyquist limit).

pub fn process_sample(&mut self, x: f64) -> f64

Process a single sample through the filter.

pub fn process_i16(&mut self, samples: &mut [i16])

Process a buffer of i16 samples in place.

pub fn process_i16_to_vec(&mut self, samples: &[i16]) -> Vec<i16>

Process a buffer of i16 samples, returning a new buffer.

pub fn reset(&mut self)

Reset the filter state (clear delay line).

Trait Implementations

impl Clone for BiquadFilter

fn clone(&self) -> BiquadFilter

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for BiquadFilter

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

Formats the value using the given formatter.