XTA D2 Operator's Manual - page 12
Page 12
D2 Operators Manual
Try de-essing with the filter centred at 8-9kHz, and a relatively narrow ‘Q’ of about
4, attack 1mS, release 100mS.
Mode II: “Cut Below”
Having selected the frequency band to work with, the dynamic eq will listen to this
band and act upon it by cutting any frequencies present in it that drop below the
predetermined threshold. Consider the example below where the threshold is set to
+10dB, and the selected frequency band is centred around 1kHz, with a ‘Q’ of 1.0.
Signals above the threshold will pass flat, but as the level decreases, those frequencies
centred around 1kHz will be cut or expanded. The amount of gain reduction applied
depends on how much the signal drops the threshold and the ratio set – a 2:1 ratio
would mean that for every drop of 1dB below the threshold, the band centred
around 1kHz would drop by 2dB.
Uses of “Cut Below” mode.
Reducing the level of high frequency noise can be effectively implemented in this
mode. Particularly effective on percussive material, unwanted tape noise and
interference can be usefully removed without affecting the signal at normal levels.
Try the filter set to a high shelf mode at 4kHz, attack 25mS, release 100mS. The
threshold setting is more crucial in this mode than usual, with the trade-off being
effective removal of noise against possible intrusive dulling of the program material.