Ongoing Beta Beta Test: Precision Room Correction with FDW (Frequency-Dependent Windowing)

[jiaxin.li]

I tried precision RC 20-20000Hz and this is the evaluation result. I assume this must be using FDW as well judging by the big dips at higher frequencies.

View attachment 18977

FDW narrows at higher frequencies, making information that was previously 'filled in' by reflections become visible. If multiple speakers are playing sound simultaneously during the measurement, severe phase interference can occur in the combined response, leading to noticeable attenuation peaks in the frequency response (these attenuations typically appear as deep frequency notches).