Sound
Sound Engineering at Kyung Hee University. At Fonesound, designed and installed church sound, video, and lighting systems. Learned firsthand how a space holds sound — physics understood through the body.
Sound Engineering
kps.crowny.org
KPS
KIM PRESIDENT SK
Kim Sun-kyung
Software Developer Founder Creator of the Crowny Ecosystem
The hands that once shaped sound now write code.
About
From Sound to Code
The hands that once shaped sound now write code.
Kim Sun-kyung (KPS) is a developer and founder who designed and built an entire AI ecosystem — from a Korean programming language to an operating system, audio codecs, and quantitative trading engines, spanning 195+ live services. He writes the language, compiler, VM, and OS himself, and leads a development team to turn ideas into products.
Studying Postmodern Music & Sound Engineering at Kyung Hee University, I learned the architecture of sound. The way frequencies fill a space, the path a signal travels, and the moment it reaches a person— working with sound was, at its core, designing systems.
At Pyeonghwa SNC, as Technical Team Lead for industrial high-pressure cleaning systems, I owned the full hardware development lifecycle— from design specs to mass production, learning firsthand how physical-world requirements become reality. At Fonesound, I led integrated projects delivering church sound, video, lighting & interiors under a single team. I developed technical leadership rooted in seeing an entire space as one system and making decisive calls on the ground.
Completing the Startup Consulting program at Chung-Ang University, Graduate School of Industrial & Entrepreneurial Management, I also learned the language that connects technology to business. Today I work as a Freelance Developer, weaving all of those threads—sound, hardware, the field, management—into code. I build at the intersection of sound, hardware, and software.
Currently leading a development team to grow the Crowny AI ecosystem— a Korean-language programming language, a proprietary OS, audio & video codecs, quantitative finance & trading engines, and 195+ services.
One Thread
Where Three Hands Meet
Designing sound, soldering circuits, writing code — somewhere along the way I realized all three were speaking the same language.
Hardware
As Technical Team Lead at Pyeonghwa SNC, oversaw industrial high-pressure cleaning systems from design through mass production. Took full ownership of how electrical and mechanical circuits meet the real world.
Hardware DevelopmentSoftware
A full-stack developer bridging deep domain knowledge into code. Independently building the Crowny ecosystem — a Korean-language programming language, OS, audio codec, and more.
Full-Stack · Systems
"Understand how sound meets a space, and you start to see how data meets a system.
Code written by someone who knows the domain runs differently."
— KPS · Kim Sun-kyung
What I'm Building
One World, Built by a Team — Crowny
From a Korean-language programming language to an operating system, audio codec, and 195 domains—
an entire ecosystem designed and built by our team.
195+
*.crowny.org domains
actively operated
1
Programming language
written in Korean (Hanseon)
4-phase
balanced ternary
Custom VM · OS architecture
Native boot on RPi5 / Jetson
Language · Compiler
Hanseon (Korean-language programming language)
A programming language with Korean keywords. The compiler (hanseonc) and pure 4-phase balanced ternary VM were designed and implemented from scratch. ISA729 with 489 opcodes, 225 built-in functions, and 24 standard libraries.
World's first Korean-language 4-phase balanced ternary programming language
Operating System
CrownyOS
A self-hosting pure ternary operating system built entirely in C and Hanseon. Boots natively on RPi5 and Jetson Orin, with GUI rendering and an app registry included.
Bare-metal boot · 94 KB kernel · Custom GUI
Audio Codec
Invented by a Sound Engineer
CAF — Crowny Audio Format
An audio codec designed by a sound engineer with thousands of hours setting up church audio and video systems. MDCT vector-based 33-trit architecture — only existing waveforms are recorded. Field instinct translated directly into mathematics.
CAF7 v3.1 production-ready · All 6 KPIs passed
Video · Image Codec
CVF · CIF
Vector-based 4-phase balanced ternary video (CVF) and image (CIF) codecs. Trit-tree structure achieves 73% I/P delta compression, delivering high-efficiency rendering for synthetic content, UI, and gradients compared to PNG.
44/44 tests passed · 4K real-world verified
AI Service
Crowny AI
The central AI of the Crowny ecosystem, powered by a Hanseon backend. Live at crowny.org — featuring dual-routing across three Gemini models, a semantic filter, and accumulated ontology learning.
Visit crowny.org
Ecosystem
195-Service Ecosystem
AI, finance (Pay · Bank · DEX), education (Academy · ERP), design, faith, and community — all running on a Hanseon backend through a single gateway. Each service forms its own world within one coherent vision.
Visit ecosystem.crowny.org
Measured Capability · synced with level.crowny.org
AI Capability Rank
An index of AI-usage capability measured by a 12-axis adaptive assessment.
The figures below are synced live from level.crowny.org.
Live · synced with level.crowny.org
Frontier Builder
Capability Index CI 93.5 / 100
Level 19 / 23
Tier 4 · Frontier Builder
93Worldwide
4Korea
47US + Korea
12-axis capability profile
Within ~93 worldwide (uncertainty range 22–1,050). Estimated against the LLM-using population.
The Road Walked
From hardware design labs to hands-on installation sites — the arc of a career, converging into code.
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Technical Team Lead — High-Pressure Cleaning System Development
Led the full development cycle of industrial high-pressure cleaning systems. From initial design through prototyping, testing, and mass production — owned every stage of the hardware process and shipped the product.
Hardware Development Device Design Team Lead -
Technical Team Lead — Sound, Video, Lighting & Interiors
Led integrated church sound, video, lighting & interior installation projects as Technical Team Lead. Oversaw the entire workflow from design through installation and final setup, bringing spaces to life with sound that performs in the room.
Audio Systems Video & Lighting Space Interiors Site Management -
Freelance Developer — Software Development
The ears of a Sound Engineer, the hands of a Hardware Developer, and the instincts of a field installer — all converging into code. Building the Crowny AI ecosystem independently: a Korean-language programming language, a custom OS, an audio codec, and more, while working as a full-stack freelance developer.
Software Freelance Full-Stack
Education · Skills
Built on Learning and Field Experience
An academic foundation spanning music and engineering, backed by six competencies proven in the field.
Bachelor's
Kyung Hee University
Department of Postmodern Music
Sound Engineering
Graduate
Chung-Ang University
Graduate School of Industrial & Entrepreneurial Management
Startup Consulting
Completed
Core Competencies
Sound Engineering
Acoustic design, mixing, and live setup. Deep expertise honed across churches and performance venues.
Hardware Development
End-to-end ownership of industrial device development — from design drawings to mass production.
Software Development
Full-stack web and app development — including Hanseon and CrownyOS, a proprietary language and OS built from scratch.
Video & Lighting
Integrated on-site systems. Designing and installing video and lighting as a unified spatial experience.
Space & Interiors
Church and facility fitouts. Designing and finishing spaces where sound and light belong to the room.
Entrepreneurship & Management
Graduate study in Startup Consulting and hands-on team leadership. Turning ideas into operating ventures.
Philosophy
A Technologist Who Understands the Domain
The hands that shaped sound once assembled hardware,
and the eyes that understand hardware now write software.
There are things you can only see when one team brings all three together.
The experience of translating live sound into numbers, the instinct of leading an industrial device from design to production— all of it, I believe, flows into every line of code. That is why our team designed and built from scratch, Hanseon (Korean-language programming language) and 4-phase balanced ternary (四相 均衡 三進)— a fundamentally different foundation that handles three values: true, false, and unknown. Not borrowing tools, but questioning the tools themselves — that is where all of this begins.