Data.Euterpea.Midi.MEvent

type PTime = Rational

type DurT = Rational

data MEvent

Constructors

• MEvent { eDur :: DurT, eInst :: InstrumentName, eParams :: List Number, ePitch :: AbsPitch, eTime :: PTime, eVol :: Volume }

Instances

• Generic MEvent _
• Eq MEvent
• Show MEvent
• Ord MEvent

type Performance = List MEvent

data MContext

Constructors

• MContext { mcDur :: DurT, mcInst :: InstrumentName, mcTime :: PTime, mcVol :: Volume }

Instances

• Generic MContext _
• Show MContext

eTime :: MEvent -> PTime

where is this defined in Haskell Euterpea ?

eVol :: MEvent -> Volume

eDur :: MEvent -> DurT

zero :: Rational

one :: Rational

two :: Rational

perform :: forall a. ToMusic1 a => Music a -> Performance

perform1 :: Music1 -> Performance

perform1Dur :: Music1 -> Tuple Performance DurT

merge :: Performance -> Performance -> Performance

musicToMEvents :: MContext -> Music1 -> Tuple Performance DurT

noteToMEvent :: MContext -> Dur -> Note1 -> MEvent

I don't yet understand the original HSoM noteToMEvent shown here this function sets MEvent charactersitics from the note pitch together with the current context. (The context has been set, for example, by applying the phrase attributes). However, when it comes to volume it just ignores the context volume and replaces it with the context from the note itself perhaps it would be better if modifying the volume Phrase Attribute provided a multiplier for the note volume and not simply a replacement I need to review the original Euterpea documentation

applyControls :: Music1 -> Music1

phraseToMEvents :: MContext -> List PhraseAttribute -> Music1 -> Tuple Performance DurT

This is an horrendous function!