octagonal/rdsp-experiments
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I want to die

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This commit is contained in:
Albin Chaboissier
2025-09-24 23:10:28 +02:00
parent f62ef05cb8
commit 00b4756138
9 changed files with 4939 additions and 15151 deletions
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8
src/fft/rader.rs
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@ -4,7 +4,7 @@ use std::f32::consts::PI;
use crate::{
complex::Complex32,
fft::{create_fft, is_prime , DFTAlgorithm, FFTDirection},
fft::{create_fft, dft::NaiveDFT, is_prime, DFTAlgorithm, FFTDirection},
};
pub struct RaderFFT {
@ -31,7 +31,8 @@ impl DFTAlgorithm for RaderFFT {
let permutations: Box<[usize]> = (0..(size - 1)).map(|i| exp_mod(g, i + 1, size)).collect();
// Compute fourrier transform of twiddle factors
let mut convolution_fft = create_fft(size - 1, FFTDirection::Forward);
//let mut convolution_fft = create_fft(size - 1, FFTDirection::Forward);
let mut convolution_fft = Box::new(NaiveDFT::create(size - 1, FFTDirection::Forward));
let mut convolution_operand = (0..(size - 1))
.map(|i| {Complex32::cexp(-2. * direction.sign() * PI * (permutations[i] as f32) / (size as f32))})
.collect::<Vec<Complex32>>();
@ -42,7 +43,8 @@ impl DFTAlgorithm for RaderFFT {
permutations,
convolution_operand: convolution_operand.into(),
convolution_ifft: create_fft(size - 1, FFTDirection::Inverse),
//convolution_ifft: create_fft(size - 1, FFTDirection::Inverse),
convolution_ifft: Box::new(NaiveDFT::create(size - 1, FFTDirection::Inverse)),
convolution_fft,
output: vec![Complex32::zero(); size].into(),