Struct Chime 

pub struct Chime {
    pub freqs: &'static [f64],
    pub spacing_ms: u32,
    pub timbre: &'static Timbre,
    pub period_ms: u32,
}

A short motif of struck notes, plus the silence that follows it — so a looping alert carries its own cadence and needs no gap bolted on.

Fields

freqs: &'static [f64]

Note frequencies in Hz, played in order.

spacing_ms: u32

Time between note onsets. Shorter than the decay, so notes ring into one another instead of being cut off — that overlap is most of what makes this sound designed rather than beeped.

timbre: &'static Timbre

period_ms: u32

One full period, motif plus trailing silence.