Developer reverse-engineers a commercial spatial audio effect on Linux
What happened
On October 11, Hacker News featured a developer reverse-engineering a commercial spatial audio effect on Linux with PipeWire. He fed the original program impulse responses and sine sweep recordings to measure its linear time-invariant behavior, stereo crosstalk and phase delay. He first used the MIT KEMAR database, which fell short, then switched to the SADIE II database, which includes room responses, for a closer match. He also used LLMs, Gemini in particular, to grasp the psychoacoustics. The post reports progress from the measurement method and the database switch, and does not claim an exact match.
Written by AI from the coverage · updated 1 hour ago
Coverage
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- Hacker News front pageHow I reverse engineered a commercial spatial audio effect
一位开发者用 PipeWire 在 Linux 上复刻某商业空间音频效果，通过向该程序输入脉冲响应与正弦扫频录音，测量其线性时不变特性、双声道串扰与相位延迟。他先用 MIT KEMAR 数据库效果不佳，改用带房间响应的 SADIE II 数据库后更接近原效果，并借助 LLM（尤其 Gemini）辅助理解心理声学概念。
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