| Safe Haskell | Safe |
|---|---|
| Language | Haskell2010 |
Sound.MIDI.Message.Channel.Voice
Description
Channel voice messages
Synopsis
- data T
- get :: C parser => Int -> Int -> Fragile parser T
- putWithStatus :: C writer => (Int -> T compress writer) -> T -> T compress writer
- type ControllerValue = Value
- type PitchBendRange = Int
- type Pressure = Int
- isNote :: T -> Bool
- isNoteOn :: T -> Bool
- isNoteOff :: T -> Bool
- zeroKey :: Pitch
- explicitNoteOff :: T -> T
- implicitNoteOff :: T -> T
- realFromControllerValue :: (Integral a, Fractional b) => a -> b
- bankSelect :: T
- modulation :: T
- breathControl :: T
- footControl :: T
- portamentoTime :: T
- dataEntry :: T
- mainVolume :: T
- balance :: T
- panorama :: T
- expression :: T
- generalPurpose1 :: T
- generalPurpose2 :: T
- generalPurpose3 :: T
- generalPurpose4 :: T
- vectorX :: T
- vectorY :: T
- bankSelectMSB :: T
- modulationMSB :: T
- breathControlMSB :: T
- footControlMSB :: T
- portamentoTimeMSB :: T
- dataEntryMSB :: T
- mainVolumeMSB :: T
- balanceMSB :: T
- panoramaMSB :: T
- expressionMSB :: T
- generalPurpose1MSB :: T
- generalPurpose2MSB :: T
- generalPurpose3MSB :: T
- generalPurpose4MSB :: T
- bankSelectLSB :: T
- modulationLSB :: T
- breathControlLSB :: T
- footControlLSB :: T
- portamentoTimeLSB :: T
- dataEntryLSB :: T
- mainVolumeLSB :: T
- balanceLSB :: T
- panoramaLSB :: T
- expressionLSB :: T
- generalPurpose1LSB :: T
- generalPurpose2LSB :: T
- generalPurpose3LSB :: T
- generalPurpose4LSB :: T
- sustain :: T
- porta :: T
- sustenuto :: T
- softPedal :: T
- hold2 :: T
- generalPurpose5 :: T
- generalPurpose6 :: T
- generalPurpose7 :: T
- generalPurpose8 :: T
- extDepth :: T
- tremoloDepth :: T
- chorusDepth :: T
- celesteDepth :: T
- phaserDepth :: T
- dataIncrement :: T
- dataDecrement :: T
- nonRegisteredParameterLSB :: T
- nonRegisteredParameterMSB :: T
- registeredParameterLSB :: T
- registeredParameterMSB :: T
- data Pitch
- fromPitch :: Pitch -> Int
- toPitch :: Int -> Pitch
- data Velocity
- fromVelocity :: Velocity -> Int
- toVelocity :: Int -> Velocity
- data Program
- fromProgram :: Program -> Int
- toProgram :: Int -> Program
- data Controller
- fromController :: Controller -> Int
- toController :: Int -> Controller
- increasePitch :: Int -> Pitch -> Pitch
- subtractPitch :: Pitch -> Pitch -> Int
- frequencyFromPitch :: Floating a => Pitch -> a
- maximumVelocity :: Velocity
- normalVelocity :: Velocity
- realFromVelocity :: Fractional b => Velocity -> b
Documentation
Constructors
| NoteOff Pitch Velocity | |
| NoteOn Pitch Velocity | |
| PolyAftertouch Pitch Pressure | |
| ProgramChange Program | |
| Control T ControllerValue | |
| PitchBend PitchBendRange | |
| MonoAftertouch Pressure |
putWithStatus :: C writer => (Int -> T compress writer) -> T -> T compress writer #
type ControllerValue = Value #
type PitchBendRange = Int #
NoteOn with zero velocity is considered NoteOff according to MIDI specification.
NoteOn with zero velocity is considered NoteOff according to MIDI specification.
A MIDI problem is that one cannot uniquely map a MIDI key to a frequency. The frequency depends on the instrument. I don't know if the deviations are defined for General MIDI. If this applies one could add transposition information to the use patch map. For now I have chosen a value that leads to the right frequency for some piano sound in my setup.
explicitNoteOff :: T -> T #
Convert all NoteOn p 0 to NoteOff p 64.
The latter one is easier to process.
implicitNoteOff :: T -> T #
Convert all NoteOff p 64 to NoteOn p 0.
The latter one can be encoded more efficiently using the running status.
realFromControllerValue :: (Integral a, Fractional b) => a -> b #
Map integral MIDI controller value to floating point value. Maximum integral MIDI controller value 127 is mapped to 1. Minimum integral MIDI controller value 0 is mapped to 0.
bankSelect :: T #
modulation :: T #
breathControl :: T #
footControl :: T #
portamentoTime :: T #
mainVolume :: T #
expression :: T #
generalPurpose1 :: T #
generalPurpose2 :: T #
generalPurpose3 :: T #
generalPurpose4 :: T #
bankSelectMSB :: T #
modulationMSB :: T #
breathControlMSB :: T #
footControlMSB :: T #
portamentoTimeMSB :: T #
dataEntryMSB :: T #
mainVolumeMSB :: T #
balanceMSB :: T #
panoramaMSB :: T #
expressionMSB :: T #
generalPurpose1MSB :: T #
generalPurpose2MSB :: T #
generalPurpose3MSB :: T #
generalPurpose4MSB :: T #
bankSelectLSB :: T #
modulationLSB :: T #
breathControlLSB :: T #
footControlLSB :: T #
portamentoTimeLSB :: T #
dataEntryLSB :: T #
mainVolumeLSB :: T #
balanceLSB :: T #
panoramaLSB :: T #
expressionLSB :: T #
generalPurpose1LSB :: T #
generalPurpose2LSB :: T #
generalPurpose3LSB :: T #
generalPurpose4LSB :: T #
generalPurpose5 :: T #
generalPurpose6 :: T #
generalPurpose7 :: T #
generalPurpose8 :: T #
tremoloDepth :: T #
chorusDepth :: T #
celesteDepth :: T #
phaserDepth :: T #
dataIncrement :: T #
dataDecrement :: T #
Instances
| Bounded Velocity # | ToDo: We have defined minBound = Velocity 0, but strictly spoken the minimum Velocity is 1, since Velocity zero means NoteOff. One can at least think of NoteOff with (Velocity 0), but I have never seen that. |
| Eq Velocity # | |
| Ord Velocity # | |
Defined in Sound.MIDI.Message.Channel.Voice | |
| Show Velocity # | |
| Arbitrary Velocity # | |
| Random Velocity # | |
Defined in Sound.MIDI.Message.Channel.Voice | |
fromVelocity :: Velocity -> Int #
toVelocity :: Int -> Velocity #
Instances
| Bounded Program # | |
| Enum Program # | |
| Eq Program # | |
| Ord Program # | |
Defined in Sound.MIDI.Message.Channel.Voice | |
| Show Program # | |
| Ix Program # | |
Defined in Sound.MIDI.Message.Channel.Voice | |
| Arbitrary Program # | |
| Random Program # | |
Defined in Sound.MIDI.Message.Channel.Voice | |
fromProgram :: Program -> Int #
data Controller #
We do not define Controller as enumeration with many constructors,
because some controllers have multiple names and some are undefined.
It is also more efficient this way.
Thus you cannot use case for processing controller types,
but you can use lookup instead.
maybe (putStrLn "unsupported controller") putStrLn $ lookup ctrl $ (portamento, "portamento") : (modulation, "modulation") : []
Instances
fromController :: Controller -> Int #
toController :: Int -> Controller #
increasePitch :: Int -> Pitch -> Pitch #
subtractPitch :: Pitch -> Pitch -> Int #
frequencyFromPitch :: Floating a => Pitch -> a #
Convert pitch to frequency according to the default tuning given in MIDI 1.0 Detailed Specification.
The velocity of an ordinary key stroke and the maximum possible velocity.
The velocity of an ordinary key stroke and the maximum possible velocity.
realFromVelocity :: Fractional b => Velocity -> b #
MIDI specification says,
if velocity is simply mapped to amplitude,
then this should be done by an exponential function.
Thus we map normalVelocity (64) to 0,
maximumVelocity (127) to 1,
and minimumVelocity (1) to -1.
That is, normally you should write something like
amplitude = 2 ** realFromVelocity vel or 3 ** realFromVelocity vel.