A TikZ library for writing electroacoustic block diagrams as scores.
The signs come from Walter Branchi’s Tecnologie della musica elettronica (1976), transcribed and extended for contemporary use.
The system separates a phrase from a font.
A phrase is the abstract diagram: identities (gmic, am, lspk…) connected by name, independent of any style.
A font is the hand of an author or a tradition that draws those identities.
Change the font and the chain stays; the sign changes.
A font may declare a parent and redraw only what it wants, inheriting the rest.
gs declares wb as its parent, so it draws its own microphone and falls back to Branchi’s for the modulators.
The tables below show, for each identity, what each font actually draws — inheritance included — and the source column says which font the glyph really comes from.
An empty cell means that font has no glyph for that identity, not even through a parent.
The descriptions are the ones in the register itself, in Italian, as transcribed from Branchi’s Appendix 6.