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Implemented a little fade envelope on the notes.

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This commit is contained in:
Jamie Hardt 2024-08-04 16:28:37 -07:00
parent 0e3aaa9cea
commit 8f53addbde
1 changed files with 26 additions and 18 deletions
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44
examples/mix_multiple_sources.rs
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@ -1,5 +1,5 @@
use rodio::source::{SineWave, Source};
use rodio::{dynamic_mixer, OutputStream, Sink};
use rodio::{dynamic_mixer, OutputStream, Sink, queue};
use std::time::Duration;
fn main() {
@ -11,24 +11,32 @@ fn main() {
// Create four unique sources. The frequencies used here correspond
// notes in the key of C and in octave 4: C4, or middle C on a piano,
// E4, G4, and A4 respectively.
let source_c = SineWave::new(261.63)
.take_duration(Duration::from_secs_f32(1.))
.amplify(0.20);
let source_e = SineWave::new(329.63)
.take_duration(Duration::from_secs_f32(1.))
.amplify(0.20);
let source_g = SineWave::new(392.0)
.take_duration(Duration::from_secs_f32(1.))
.amplify(0.20);
let source_a = SineWave::new(440.0)
.take_duration(Duration::from_secs_f32(1.))
.amplify(0.20);
// Add sources C, E, G, and A to the mixer controller.
controller.add(source_c);
controller.add(source_e);
controller.add(source_g);
controller.add(source_a);
let notes = vec![261.63, 329.63, 392.0, 440.0];
notes.into_iter().for_each(|f| {
let note_source = SineWave::new(f);
let (tx, rx) = queue::queue(false);
let note_body = note_source
.clone()
.take_duration(Duration::from_secs_f32(1.0))
.amplify(0.20)
.fade_in(Duration::from_secs_f32(0.1));
let note_end = note_source
.clone()
.skip_duration(Duration::from_secs_f32(1.0))
.take_duration(Duration::from_secs_f32(1.0))
.amplify(0.20)
.linear_gain_ramp(Duration::from_secs_f32(1.0), 1.0, 0.0, true);
tx.append(note_body);
tx.append(note_end);
controller.add(rx);
});
// Append the dynamic mixer to the sink to play a C major 6th chord.
sink.append(mixer);