Soft dB Zen-Ten User guide - Manual (Page 18)

User manual for the ZEN 3-channel X-LMS controller Soft dB inc.
The F_Ex, F_Rx and the F_Cx (if used) filters are activated during the identification
phase. This way, the identified CxEy and CxRx filters include the band-pass filter and
can be used directly during the control phase.
The comparison of the energy of the secondary cross-path filter (CxEy) with the direct
secondary control path filter (CxEx) can help to select coupled or uncoupled mode. Also,
analysis of the energy of the primary control paths allows estimating the acoustical
insulation of the control sources from the reference sensors.
ZEN User Manual p. 18