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Store and process samples in 64 bit (#773)

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Roderick van Domburg 2021-05-30 20:09:39 +02:00 • committed by GitHub
parent 8062bd2518
commit fe2d5ca7c6
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19 changed files with 177 additions and 149 deletions
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16
playback/src/dither.rs
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@ -32,7 +32,7 @@ pub trait Ditherer {
where
Self: Sized;
fn name(&self) -> &'static str;
fn noise(&mut self) -> f32;
fn noise(&mut self) -> f64;
}
impl fmt::Display for dyn Ditherer {
@ -48,7 +48,7 @@ impl fmt::Display for dyn Ditherer {
pub struct TriangularDitherer {
cached_rng: ThreadRng,
distribution: Triangular<f32>,
distribution: Triangular<f64>,
}
impl Ditherer for TriangularDitherer {
@ -64,14 +64,14 @@ impl Ditherer for TriangularDitherer {
"Triangular"
}
fn noise(&mut self) -> f32 {
fn noise(&mut self) -> f64 {
self.distribution.sample(&mut self.cached_rng)
}
}
pub struct GaussianDitherer {
cached_rng: ThreadRng,
distribution: Normal<f32>,
distribution: Normal<f64>,
}
impl Ditherer for GaussianDitherer {
@ -87,16 +87,16 @@ impl Ditherer for GaussianDitherer {
"Gaussian"
}
fn noise(&mut self) -> f32 {
fn noise(&mut self) -> f64 {
self.distribution.sample(&mut self.cached_rng)
}
}
pub struct HighPassDitherer {
active_channel: usize,
previous_noises: [f32; NUM_CHANNELS],
previous_noises: [f64; NUM_CHANNELS],
cached_rng: ThreadRng,
distribution: Uniform<f32>,
distribution: Uniform<f64>,
}
impl Ditherer for HighPassDitherer {
@ -113,7 +113,7 @@ impl Ditherer for HighPassDitherer {
"Triangular, High Passed"
}
fn noise(&mut self) -> f32 {
fn noise(&mut self) -> f64 {
let new_noise = self.distribution.sample(&mut self.cached_rng);
let high_passed_noise = new_noise - self.previous_noises[self.active_channel];
self.previous_noises[self.active_channel] = new_noise;