Struct OverlapAddConvolver 

pub struct OverlapAddConvolver<T: Transcendental, const BUF_SIZE: usize> { /* private fields */ }

Overlap-add frequency-domain convolver.

Uses a real FFT for efficient frequency-domain multiplication. All scratch buffers are pre-allocated at construction time.

Parameters

• T — sample type (f32 or f64)
• BUF_SIZE — processing block size in samples

Implementations

impl<T: Transcendental, const BUF_SIZE: usize> OverlapAddConvolver<T, BUF_SIZE>

pub fn new(ir_len: usize) -> Self

Create a new overlap-add convolver.

ir_len is the expected length of the impulse response. The FFT size is chosen as the next power of two >= BUF_SIZE + ir_len - 1.

Panics

Panics if the resulting FFT size is less than 4.

pub fn set_ir(&mut self, ir: &[T])

Set the impulse response.

Computes and stores the FFT of the zero-padded IR.

pub fn fft_size(&self) -> usize

Returns the FFT size.

pub fn process(&mut self, input: &[T], output: &mut [T])

Process one block of samples.

input must have exactly BUF_SIZE elements. output must have exactly BUF_SIZE elements.