Pure Intonation Harmonium

This is a digital playable pure intonation harmonium I created with Haskell and JavaScript. It is a musical instrument operated by an on-screen keyboard. It has a large set of available tones which are related by base frequency ratios of (products of) 2, 3 and 5 (and their multiplicative inverses). This enables playing music with wide ranging modulations in an intonation with pure minor and major thirds, fifths and octaves.

Haskell Website

This website is served by a custom server written in Haskell. The libraries wai, warp and servant are essential ingredients. Decoupling content specific code from generic functionalities might allow me to publish the generic parts in the future.

Completed Projects

Master's Thesis

This is my master's thesis in mathematics. Descriptively, it is titled ‘Stammeier's C*-algebras for several injective group endomorphisms as C*-algebras of diagrams of étale groupoid correspondences’

Projects under Development