DecayCore v1.4.2 — FIR Room Correction and Acoustic Measurement

[1.4.2] - 24-10-2026

Deep bass nulls now show clearly in the target curve

The target curve dips where the room has a deep null, so the filter no longer tries to fill it. In a test, a 16 dB dip half an octave wide, typical of a boundary cancellation, left the target unchanged. It now lowers the target by about 8 dB. Broad dips and ordinary ripple are left to the correction. A file exported in SPL now gives the same filter as one in dBFS. Earlier Automatic results are rebuilt.

CamillaDSP files no longer cut the level by a fixed 6 dB

Without a subwoofer, the file plays 6 dB louder at the same volume, so lower your volume before the first listen. With a subwoofer, it cuts 6.02 dB for the summed channels, plus any gain from the sub trim. Raise Auto Headroom Margin for more clipping headroom.

Linkwitz-Riley or Butterworth for each crossover

Pick Butterworth or Linkwitz-Riley for each crossover on the XO tab, to match your speakers. Butterworth stays the default.

Results check your crossovers against the measurement

Results shows how well each crossover matches the measured phase, for example "80Hz: 91% good", and warns when the measurement doesn't contain one. Crossovers too subtle to see in a room read "not verifiable". The check never changes the filter.

Low crossovers keep an Asymmetric filter's response

With a crossover at 100 Hz or lower, an Asymmetric filter could bend the bass by 4 dB or more. It now keeps its designed response, as Linear Phase already does. Earlier Automatic results that used a crossover are rebuilt.