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Feat: rescale spectrum

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This commit is contained in:
Raphaël Forment
2026-02-10 19:32:51 +01:00
parent d010392a3c
commit 38fad92f2e
1 changed files with 2 additions and 2 deletions
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4
src/engine/audio.rs
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@@ -118,10 +118,10 @@ impl SpectrumAnalyzer {
0.5 * (1.0 - (2.0 * std::f32::consts::PI * i as f32 / (FFT_SIZE - 1) as f32).cos()) 0.5 * (1.0 - (2.0 * std::f32::consts::PI * i as f32 / (FFT_SIZE - 1) as f32).cos())
}); });
let nyquist = sample_rate / 2.0;
let min_freq: f32 = 20.0; let min_freq: f32 = 20.0;
let max_freq: f32 = 16000.0;
let log_min = min_freq.ln(); let log_min = min_freq.ln();
let log_max = nyquist.ln(); let log_max = max_freq.ln();
let band_edges: [usize; NUM_BANDS + 1] = std::array::from_fn(|i| { let band_edges: [usize; NUM_BANDS + 1] = std::array::from_fn(|i| {
let freq = (log_min + (log_max - log_min) * i as f32 / NUM_BANDS as f32).exp(); let freq = (log_min + (log_max - log_min) * i as f32 / NUM_BANDS as f32).exp();
let bin = (freq * FFT_SIZE as f32 / sample_rate).round() as usize; let bin = (freq * FFT_SIZE as f32 / sample_rate).round() as usize;