Struct Window 

pub struct Window {
    pub window_type: WindowType,
    pub size: usize,
    /* private fields */
}

Pre-computed window function with SIMD-accelerated application

Fields

window_type: WindowType

Window type

size: usize

Window size (number of samples)

Implementations

impl Window

pub fn new(window_type: WindowType, size: usize) -> Self

Create a new window function

Uses a global cache for common sizes (256, 512, 1024, 2048, 4096, 8192) to avoid recomputing cos() repeatedly. Uncommon sizes are computed on-demand.

Arguments

• window_type - Type of window function
• size - Window size in samples (typically FFT size)

Example

let hann = Window::new(WindowType::Hann, 2048);  // From cache (fast!)
let blackman = Window::new(WindowType::Blackman, 4096);  // From cache (fast!)

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

Apply window to audio buffer using SIMD acceleration

Multiplies each sample by the corresponding window coefficient. Uses true SIMD operations for 4-8x speedup on modern CPUs.

Arguments

• buffer - Audio buffer to window (modified in-place)

Panics

Panics if buffer length doesn’t match window size

Example

let window = Window::new(WindowType::Hann, 1024);
let mut audio = vec![1.0; 1024];
window.apply(&mut audio); // SIMD-accelerated windowing

pub fn gain(&self) -> f32

Get the window gain (for normalization)

Returns the sum of all window coefficients divided by window size. Useful for normalizing the energy after windowing.

pub fn coherent_gain(&self) -> f32

Get the coherent gain (for amplitude-preserving normalization)

This is the average of the window coefficients. Multiply your signal by 1/coherent_gain after windowing to preserve amplitude.

Trait Implementations

impl Clone for Window

fn clone(&self) -> Window

Returns a duplicate of the value.

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

Performs copy-assignment from source.