Portrait of Karl P. Velik, Au.D.

Karl P. Velik, Au.D.

Clinical audiologist, amateur musician, hobbyist vibe-coder.

As an audiologist, I help hearing-impaired people communicate. I am deeply passionate about treating hearing difficulty and tinnitus distress through amplification technology.

Chuck Weatherby is my stage name for music. I'm entirely self-taught. I love mathematical music, loops and sequencers, and use my own self-developed notation for all my projects.

In my spare time, I vibe-code with Claude on special interest projects, game, read, write, cook, work out, and play with my cat. 

Business inquiries: karl@kpv-aud.com

Projects

Polyvox (Beta)

8-voice live-playing Web MIDI controller in your browser, inspired by clinical audiometers. Supports gamepads via HTML5.

polyvox.kpv-aud.com

MusicTerminal (Beta)

Loop-based live composer with pseudocode notation, inspired by Teenage Engineering, Strudel, and my HDM projects below.

musicterminal.kpv-aud.com

HDM-AS

Harmonic Degree Machine: Advanced Sequencer. Accepts musical pseudocode (PK notation) and plays it like a player piano.

hdm.kpv-aud.com

HDM-KV

Harmonic Degree Machine: Keyboard Viewer. A keyboard visualizer helping to bridge Western notation and my PK notation (musical pseudocode).

hdm.kpv-aud.com

Calendata

A calendar designer's workbench — design a calendar, measure its drift. Can you beat the Gregorian calendar?

calendata.kpv-aud.com

KP Audiometer🔒 sign-in

Virtual teaching tool for pure-tone and speech audiometry, with procedurally generated caseload from public data. For students of audiology.

audiometer.kpv-aud.com

Blog

June 27, 2026

Hello, world.

First post. The site is up and the KP Audiometer beta is live (invite-only for now). More tools and writing to come.