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Reverse-engineering a spatial audio effect led to HRTF experiments in PipeWire

epestr.com 7 min read Editor score 6/10

The author describes experimenting with audio filters and psychoacoustics in PipeWire, then trying head-related transfer functions after an initial HRTF dataset sounded poor. The reverse-engineering process may offer useful DSP ideas, though it is outside the digest’s core engineering beat.

What

A Linux project uses PipeWire to investigate a commercial real-time spatial-audio effect.

How

After KEMAR sounded too inward, SADIE II's room responses sounded much closer to the remembered effect.

Why it matters

Impulse-response tests expose a filter's decay shape and phase delays, letting engineers compare behavior without knowing its internal algorithms.

Read on epestr.com → Hacker News · 36 comments

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