Struct usfx::Sample

pub struct Sample { /* fields omitted */ }

Audio sample that procedurally generates it's sound.

Plug this into the Mixer object to play the sound.

// Generate a sine wave at 2khz
let mut sine_wave = usfx::Sample::default();
sine_wave.osc_frequency(2000);
sine_wave.osc_type(usfx::OscillatorType::Sine);

// Add it to the mixer
let mut mixer = usfx::Mixer::default();
mixer.play(sine_wave);

// Plug it into a audio library, see the examples for a cpal & SDL2 implementation
// ...
// Call the generator to get a buffer for the audio library
mixer.generate(&mut buffer);

Methods

impl Sample

pub fn volume(&mut self, volume: f32) -> &mut Self

Set the volume which is a multiplier of the result.

A range from 0.0-1.0 will result in proper behavior, but you can experiment with other values.

pub fn osc_frequency(&mut self, frequency: usize) -> &mut Self

Set the frequency of the oscillator in hertz.

When using the noise oscillator type this will be the seed. A range from 1-20000 is allowed.

pub fn osc_type(&mut self, oscillator: OscillatorType) -> &mut Self

Set the type of the oscillator.

See the OscillatorType enum for supported wave types.

pub fn osc_duty_cycle(&mut self, duty_cycle: DutyCycle) -> &mut Self

Set the length of the pulse, this only applies when you use a square wave.

Changing of the duty cycle mainly results in a different timbre. A range from 0.0-1.0 will have results, other values won't do anything.

pub fn env_attack(&mut self, attack: f32) -> &mut Self

Set the time until the first envelope slope reaches it's maximum height.

A range from 0.0-1.0 will result in proper behavior, but you can experiment with other values.

pub fn env_decay(&mut self, decay: f32) -> &mut Self

Set the time it takes from the maximum height to go into the main plateau.

A range from 0.0-1.0 will result in proper behavior, but you can experiment with other values.

pub fn env_sustain(&mut self, sustain: f32) -> &mut Self

Set the height of the main plateau.

A range from 0.0-1.0 will result in proper behavior, but you can experiment with other values.

pub fn env_release(&mut self, release: f32) -> &mut Self

Set the time it takes to go from the end of the plateau to zero.

A range from 0.0-1.0 will result in proper behavior, but you can experiment with other values.

pub fn dis_crunch(&mut self, crunch: f32) -> &mut Self

Overdrive that adds hard clipping.

A range from 0.0-1.0 will result in proper behavior, but you can experiment with other values.

pub fn dis_drive(&mut self, drive: f32) -> &mut Self

Overdrive with soft clipping.

A range from 0.0-1.0 will result in proper behavior, but you can experiment with other values.

Trait Implementations

impl Clone for Sample

fn clone(&self) -> Sample

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for Sample

impl Debug for Sample

fn fmt(&self, f: &mut Formatter) -> Result

Formats the value using the given formatter.

impl Default for Sample

fn default() -> Self

The default is a sinewave of 441 hz.