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Eugene Park (@znbobziz-ship-it)

Systems programmer specializing in low-latency networked audio, real-time Linux kernels, and deterministic DSP infrastructure.

I design and implement software that lives close to hardware clocks and wire speeds. My daily focus revolves around lock-free concurrency, memory-efficient packet serialization, and audio graph engines that cannot afford a single dropped sample.

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🧭 Background & Focus

• Domain: Low-Latency Distributed Audio, Embedded DSP Firmware, Real-Time Systems Programming
• Kernel & OS: Linux PREEMPT_RT, PipeWire / JACK Graph Subsystems, ALSA driver internals
• Network & Clocking: IEEE 1588 PTPv2 Precision Time Protocol, AES67, RTP/RTSP, raw socket multicasting
• Current Curiosity: Vectorized DSP routines across RISC-V RVV 1.0 and ARM NEON, lock-free wait-free SPMC queues

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🛠 Technical Toolkit

Category	Primary Technologies & Tooling
Core Languages	Rust, C++20, ISO C99, Go, Zig, Python
Low-Level & DSP	SIMD (AVX2, AVX-512, NEON), Fixed-Point Math, FFTW, libsndfile, CLAP / VST3 SDK
Audio Subsystems	PipeWire SPA Plugins, JACK Audio Connection Kit, ALSA Kernel API, WebAudio
Real-Time & Concurrency	Lock-Free Ring Buffers, Atomic Primitives, Cache Line Alignment, PREEMPT_RT Tuning
Profiling & Diagnostics	perf, ebpf (bpftrace), Valgrind / Massif, Wireshark (Audio over IP), Oscilloscopes
Toolchains & Build	Cargo, CMake, Ninja, Make, GCC, Clang/LLVM, GDB/LLDB, ASan/UBSan, Clang-Tidy

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🚀 Key Open-Source Projects

+-----------------------------------------------------------------------------+
| PROJECT       | LANGUAGE  | PURPOSE                                         |
+-----------------------------------------------------------------------------+
| wave-mesh     | Rust      | Zero-copy multicast networked audio routing bus |
| synth-core    | C++20     | Polyphonic modular synthesizer engine with SIMD |
| jitter-guard  | Rust / C  | Microsecond-level PTPv2 drift monitor CLI       |
| dsp-bench     | Zig / C   | Cross-platform benchmarker for IIR/FIR filters  |
+-----------------------------------------------------------------------------+

1. wave-mesh

• Architecture: Asynchronous zero-copy audio daemon transporting 64-channel 24-bit/96kHz streams across standard local Ethernet networks.
• Key Features: Ring-buffer shared memory transport, jitter-buffer adaptation with microsecond drift correction, and native PipeWire/JACK bridge modules.
• Stack: Rust, Linux AF_PACKET, epoll, PipeWire SPA.

2. synth-core

• Architecture: Real-time modular DSP library designed for plugin hosts and embedded Eurorack modules.
• Key Features: Band-limited oscillator generation (BLIT/BLEP), oversampled zero-delay feedback (ZDF) filters, and zero dynamic heap allocations in audio threads.
• Stack: C++20, AVX2 / ARM NEON SIMD intrinsics, CMake.

3. jitter-guard

• Architecture: Telemetry tool that passively listens to IEEE 1588 PTP packets and hardware timestamps (SO_TIMESTAMPING) to pinpoint packet delay variation (PDV).
• Key Features: TUI visualization, JSONL export for long-term jitter tracking, and alert triggers for clock synchronization failures.
• Stack: Rust, crossterm, Linux Socket Timestamping API.

4. dsp-bench

• Architecture: Lightweight CLI toolkit evaluating cycles-per-sample efficiency of common audio DSP filters across diverse CPU architectures.
• Key Features: Supports x86_64, aarch64, and riscv64 targets with cycle-accurate hardware counters.
• Stack: Zig, C99, GNU Make.

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📐 Engineering Principles

1. Deterministic Execution First: In real-time audio, late data is corrupted data. Memory allocations, locks, and blocking syscalls never enter the audio execution thread.
2. Explicit Over Implicit: Performance is not an afterthought; cache friendliness, struct layout packing, and explicit data ownership dictate architectural choices.
3. Measure, Don't Guess: Hardware timers, cycle counters, and eBPF tracing guide every refactoring decision rather than compiler assumptions.
4. Resilient Simplicity: Complex protocols fail in unexpected environments. Minimal, modular protocol envelopes survive dirty network segments and power interruptions.

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📈 Activity & Development Workflow

[System Event Loop]
  │
  ├── 1. Ingress Audio / Network Packet
  │      └── Lock-free Single-Producer Multi-Consumer (SPMC) Queue
  │
  ├── 2. Vectorized DSP Processing (SIMD / Non-allocating)
  │      └── Fixed-block buffer pipeline (16..128 frames)
  │
  └── 3. Egress Hardware Bus / Soundcard DMA Buffer
         └── Verified Zero Xruns under Linux PREEMPT_RT

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📬 Connect & Collaborate

• GitHub Issues: Open a discussion or report issues directly on any repository.
• Audio Over IP & Real-Time Inquiries: Available for technical design discussions on low-latency audio transmission and driver architectures.
• GPG Key ID: 0x3F8B2E17A4D091C5 (commit signatures and verification)