SoundNew

Train on the rails

The da-da, da-da of wheels over rail joints, with a low thump under each pair, speeding up step by step; an optional horn sounds on every threshold.

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Parameters

Name	Type	Default	Range	What it does
tempo	number	76	56 to 104 bpm	the pace at home, in beats of the clatter
speedTo	number	150	100 to 190 bpm	the pace at the limit; each stretch is a step up
weight	number	0.6	0 to 1	how heavy the low thump under each pair is
clack	number	1500	900 to 2600 Hz	the pitch of the wheel clicks
swing	number	0.4	0 to 1	how late the second click of a pair falls (0 straight, 1 triplet)
fill	number	0.5	0 to 1	how many more pairs the rhythm adds as it speeds up
horn	number	0.5	0 to 1	how loud the horn on each threshold is (0 for none)
hornKind	choice	pad	pad, swell	what the horn is: a held two-note blast or a low swell
hornRegister	integer	48	40 to 60	the lowest note of the horn (MIDI)
dropout	number	2.2	1 to 5 s	how long before a quiet threshold the train stops
tail	bool	true	–	after the limit the train slows and fades away through the coda
key	choice	C	C, C#, D, Eb, E, F, F#, G, Ab, A, Bb, B	the home key; a channel that leaves it unset gets its own from its seed
mode	choice	major	major, minor, dorian, lydian, mixolydian, phrygian	the scale the notes are drawn from
family	choice	ascend	ascend, pendulum, fifths, plateau, drift	how the chord roots move from threshold to threshold
colour	integer	2	0 to 3	the chords' colour: 0 triad, 1 seventh, 2 add9, 3 sus2
limit	choice	glow	glow, plagal, deceptive, open	the chord the limit lands on

film.js

elements: { 'rail-clatter': { tempo: 76, speedTo: 150 } }

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