Codex Harmonicus VI — De Templo Musico

Folio VI and final leaf of the Codex Harmonicus, a recovered-manuscript-style plate on the body, the room and the consonant plan — the golden section, a room built on a chord, and the copyist's closing note.

What's inside

• The man within the circle, measured as a musical scale, alongside the golden section and how its ratio approaches the sixths
• The same six ratios found governing a ship, a stair, a lute, a house door and a cloister bay
• A room built on a 6:4:3 chord — length, width and height set to the fourth, fifth and octave
• A table of how long sound lingers in six different rooms, from a bare chamber to a plainsong-only hall
• A table of what different building materials give back to a singer's voice, from ringing marble to a dead cloth hanging
• The copyist's closing note on the six recovered leaves, and the final unfinished sentence left in the master's own hand