vault backup: 2025-12-29 12:07:42

2025-12-29 12:07:42 -05:00
parent 4d4730bb0c
commit 94927e3eaf
2 changed files with 254 additions and 98 deletions
@@ -12,104 +12,7 @@ tags:

 ## 2025-12-19 06:22

-PowerShell module to assist in translating between banjo fingerings and concert notes,
-as well as between [[lilypond]] and conventional notation.
-
-```powershell
-$Db4 = [Pitch]::FromLilyPond("des'")
-[Note]::($Db4,1/4).PlayInTime(120)
-
-$str1 = [FrettedStringTuning]::FromOpen([Pitch]::FromLilyPond("d,,,"))
-$str1c2 = $str1.Capo(2)
-
-$openGtuning = [FrettedStringInstrumentTuning]::FromStringTunings(@(
-    [FrettedStringTuning]::FromOpen([Pitch]::FromLilyPond("d,,,")),
-    [FrettedStringTuning]::FromOpen([Pitch]::FromLilyPond("b,,")),
-    [FrettedStringTuning]::FromOpen([Pitch]::FromLilyPond("g,")),
-    [FrettedStringTuning]::FromOpen([Pitch]::FromLilyPond("d")),
-    [FrettedStringTuning]::FromOpen([Pitch]::FromLilyPond("g'")),
-    # note: the notation used above is concert octave,
-    # banjo is transposed up one octave.
-))
-[Note]::($openGc2tuning.GetPitchFromFingering(4,11)/4).PlayInTime(120) # play Db4
-
-$openGc2tuning = $openGtuning.Capo(2)
-[Note]::($openGc2tuning.GetPitchFromFingering(4,9),1/4).PlayInTime(120) # play Db4
-
-# TODO: class iFrettedStringInstrument
-# class Banjo implements iFrettedStringInstrument
-
-```
-
-```powershell
-class Pitch {
-    [Pitch] TransposeOctave([Note]$note1,[Note]$note2) {}
-    [Pitch] TransposeOctave([int]$modifier) {}
-}
-
-class Duration {
-    # 1/4, 1/8, etc.
-    # does not encode timing.
-}
-
-class Note {
-    [Pitch]$_pitch
-    [Duration]$_duration
-}
-```
-
-```mermaid
-classDiagram
-    %% simple score definition, does not support polyphony
-    class Score {
-        List~Note~ notes
-        float beatsPerMinute
-        +Beep() void
-    }
-
-    Score *-- Note
-    class Note {
-        Pitch pitch
-        float beats
-        +BeepInTime(int bpm)
-    }
-
-    Note *-- Pitch
-    class Pitch {
-        +Transpose(Pitch from, Pitch to) Pitch
-        +TransposeOctave(int modifier) Pitch
-        +FromLilyPond(string text) Pitch
-        +GetFrequency() float
-        +Beep(int milliseconds) void
-    }
-
-    class Banjo {
-        +FromNamedTuning(string tuningName) Banjo
-    }
-
-    Banjo <|.. iFrettedStringInstrument
-    class iFrettedStringInstrument {
-        -FrettedStringInstrumentTuning tuning
-        +GetPitchFromFingering(int string,int fret) Pitch
-        +GetFingeringsFromPitch(Pitch pitch) todo
-    }
-
-    iFrettedStringInstrument *-- FrettedStringInstrumentTuning
-    class FrettedStringInstrumentTuning {
-        -List~FrettedStringTuning~ stringTunings
-        +GetPitchFromFingering(int string,int fret) Pitch
-        +GetFingeringsFromPitch(Pitch pitch) todo
-        +Capo(int fret) FrettedStringInstrumentTuning
-    }
-
-    FrettedStringInstrumentTuning *-- FrettedStringTuning
-    class FrettedStringTuning {
-        Pitch openPitch
-        int fretOffset
-        +GetPitchFromFret(int fret) Pitch
-        +SetOffset(int fret) FrettedStringTuning
-    }
-```
+[[music-theory-as-code]]

 ## 2025-12-19 10:44