Sound.SC3.Lang.Control.Duration

The SC3 duration model.

Durational

class Durational d where

Values that have duration.

occ is the interval from the start through to the end of the current event, ie. the time span the event occupies.

delta is the interval from the start of the current event to the start of the next sequential event.

fwd is the interval from the start of the current event to the start of the next parallel event.

Methods

occ :: d -> Double

delta :: d -> Double

fwd :: d -> Double

Instances

Durational Dur

Dur

data Dur

Variant of the SC3 Duration model.

 delta (defaultDur {dur = 2,stretch = 2}) == 4
 occ defaultDur == 0.8
 let d = defaultDur {fwd' = Just 0} in (delta d,fwd d) == (1,0)

Constructors

Dur

Fields

tempo :: Double

Tempo (in pulses per minute)

dur :: Double

Duration (in pulses)

stretch :: Double

Stretch multiplier

legato :: Double

Legato multipler

sustain' :: Maybe Double

Sustain time

delta' :: Maybe Double

Delta time

lag :: Double

Lag value

fwd' :: Maybe Double

Possible non-sequential delta time field

Instances

Eq Dur

Show Dur

Durational Dur

defaultDur :: Dur

Default Dur value, equal to one second.

 delta defaultDur == 1

OptDur

type T8 n = (n, n, n, n, n, n, n, n)

Eight tuple.

type OptDur = T8 (Maybe Double)

Dur represented as an eight-tuple of optional values.

optDur :: OptDur -> Dur

Translate OptDur to Dur.