A deep dive into building a browser-based signal analyzer (spectrogram + oscilloscope) using modern web APIs. Covers multi-threaded architecture with Web Workers, SharedArrayBuffer for cross-thread memory sharing, Atomics.waitAsync for non-blocking synchronization, OffscreenCanvas for off-main-thread rendering, and WebAssembly SIMD for performance. The post explains how these APIs compose together to spread work across 4 threads plus GPU, keeping the main thread below 5% CPU load while delivering real-time audio visualizations.
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BackgroundTech StackArchitecturesSeamless Integration of Rendering MethodsConclusionSort: