Trait bevy::audio::AudioSinkPlayback

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pub trait AudioSinkPlayback {
    // Required methods
    fn volume(&self) -> f32;
    fn set_volume(&self, volume: f32);
    fn speed(&self) -> f32;
    fn set_speed(&self, speed: f32);
    fn play(&self);
    fn pause(&self);
    fn is_paused(&self) -> bool;
    fn stop(&self);
    fn empty(&self) -> bool;

    // Provided method
    fn toggle(&self) { ... }
}

Expand description

Common interactions with an audio sink.

Required Methods§

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fn volume(&self) -> f32

Gets the volume of the sound.

The value 1.0 is the “normal” volume (unfiltered input). Any value other than 1.0 will multiply each sample by this value.

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fn set_volume(&self, volume: f32)

Changes the volume of the sound.

The value 1.0 is the “normal” volume (unfiltered input). Any value other than 1.0 will multiply each sample by this value.

Note on Audio Volume

An increase of 10 decibels (dB) roughly corresponds to the perceived volume doubling in intensity. As this function scales not the volume but the amplitude, a conversion might be necessary. For example, to halve the perceived volume you need to decrease the volume by 10 dB. This corresponds to 20log(x) = -10dB, solving x = 10^(-10/20) = 0.316. Multiply the current volume by 0.316 to halve the perceived volume.

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