Music.Theory.Diagram.Sequencer

Sequencer type diagram.

Documentation

type P2 = (R, R)

Point

type Grey = R

Greyscale colour.

type C_Rect = (P2, P2, Grey)

Coloured rectangle as (lower-left,upper-right,greyscale).

type K_Rect = (Int, C_Rect)

C_Rect with identifier.

k_rect_gnuplot :: K_Rect -> String

Gnuplot string for K_Rect.

type Seq_Plot_Opt = ((Int, Int), (R, R), (R, R))

Sequencer plot options, (image-size,x-range,y-range). For standard midi data x-range is the time window and y-range is the gamut.

default_seq_plot_opt :: (R, R) -> Seq_Plot_Opt

Sane defaults for size and gamut.

to_k_rect :: [C_Rect] -> [K_Rect]

Add identifiers.

clean_name :: String -> String

Names for SVG terminal have character restrictions.

sequencer_plot_rect :: Seq_Plot_Opt -> FilePath -> String -> [C_Rect] -> IO ()

MIDI

amp_to_grey :: R -> R -> R

Linear amplitude to grey scale (0 = white, 1 = black).

map (floor . (* 255) . amp_to_grey (-60)) [0,0.25,0.5,0.75,1] == [255,51,25,10,0]

vel_to_amp :: Int -> R

Midi velocity number to linear amplitude.

vel_to_grey :: R -> Int -> R

Midi velocity number to grey scale.

type Sequencer_Midi n = Wseq R (n, n)

Midi sequence data.

sequencer_midi_to_rect :: Real n => ((R, R), (n, n)) -> C_Rect

Convert Sequencer_Midi node to C_Rect.

sequencer_plot_midi :: Real n => Seq_Plot_Opt -> FilePath -> String -> Sequencer_Midi n -> IO ()

Plot Sequencer_Midi.