vault backup: 2025-12-19 13:13:11

2025-12-19.md

@@ -1,7 +1,7 @@
 ---
 id:
 aliases: []
-title: "2025-12-19"
+title: 2025-12-19
 tags:
   - authorship/original
   - destiny/permanent
@@ -16,33 +16,121 @@ PowerShell module to assist in translating between banjo fingerings and concert
 as well as between [[lilypond]] and conventional notation.
 
 ```powershell
-$Db4 = [Note]::FromLilyPond("des'")
-$Db4.PlayInTime(1/4,120)
+$Db4 = [Pitch]::FromLilyPond("des'")
+[Note]::($Db4,1/4).PlayInTime(120)
 
-$str1 = [FrettedStringTuning]::FromOpen([Note]::FromLilyPond("d,,,"))
+$str1 = [FrettedStringTuning]::FromOpen([Pitch]::FromLilyPond("d,,,"))
 $str1c2 = $str1.Capo(2)
 
 $openGtuning = [FrettedStringInstrumentTuning]::FromStringTunings(@(
-    [FrettedStringTuning]::FromOpen([Note]::FromLilyPond("d,,,")),
-    [FrettedStringTuning]::FromOpen([Note]::FromLilyPond("b,,")),
-    [FrettedStringTuning]::FromOpen([Note]::FromLilyPond("g,")),
-    [FrettedStringTuning]::FromOpen([Note]::FromLilyPond("d")),
-    [FrettedStringTuning]::FromOpen([Note]::FromLilyPond("g'")),
+    [FrettedStringTuning]::FromOpen([Pitch]::FromLilyPond("d,,,")),
+    [FrettedStringTuning]::FromOpen([Pitch]::FromLilyPond("b,,")),
+    [FrettedStringTuning]::FromOpen([Pitch]::FromLilyPond("g,")),
+    [FrettedStringTuning]::FromOpen([Pitch]::FromLilyPond("d")),
+    [FrettedStringTuning]::FromOpen([Pitch]::FromLilyPond("g'")),
     # note: the notation used above is concert octave,
     # banjo is transposed up one octave.
 ))
-$openGtuning.GetNoteFromFingering(4,11).PlayInTime(1/4,120) # play Db4
+[Note]::($openGc2tuning.GetPitchFromFingering(4,11)/4).PlayInTime(120) # play Db4
 
 $openGc2tuning = $openGtuning.Capo(2)
-$openGc2tuning.GetNoteFromFingering(4,9).PlayInTime(1/4,120) # play Db4
+[Note]::($openGc2tuning.GetPitchFromFingering(4,9),1/4).PlayInTime(120) # play Db4
 
-# TODO: class FrettedStringInstrument
+# TODO: class iFrettedStringInstrument
+# class Banjo implements iFrettedStringInstrument
 
 ```
 
 ```powershell
-class Note {
-    [Note] TransposeOctave([Note]$note1,[Note]$note2) {}
-    [Note] TransposeOctave([int]$modifier) {}
+class Pitch {
+    [Pitch] TransposeOctave([Note]$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
+    }
+```
+
+## 2025-12-19 10:44
+
+#occupational/takeoff
+
+> [!quote] Art Baldwin 2025-12-19, in reference to Howard University East Towers (pp.)
+> When using PVC slab box assemblies where substantial insulation
+> (e.g mineral wool, spray foam) is to be applied,
+> add extension rings to compensate for the thickness
+
+## 2025-12-19 10:44
+
+#occupational/takeoff 
+
+This week (2025w51)
+William Bonn, as part of [[units-takeoff]] for Howard University East Towers,
+used an `Area` "Typical - Unit Balconies" for `Phase` "UNIT - RESIDENTIAL" takeoff.
+Our senior Joel Jansen approved of the method.
+
+I'd like to use the method tentatively for takeoff strictly typical of all units
+(e.g. master switches, MSDE's, etc.),
+but there is potential for significant efficiency gains
+in treating units like panelboards in [[switchgear-takeoff]]:
+picking one unit type to be typical of many nearly identical types.