170 TASCAM GigaEditor 4 Manual
With Aertouch chosen as the DEF Modulator source, it is possib le to oset the lter c urve by a
value between 0 and 64. When the minimum Aertouch Oset value of 0 is used, the incoming
aertouch values utilize the full dynamic range of the DEF lter curves. When the maximum
Aertouch Oset value of 64 is u sed, the incomi ng aertouch v alues are scaled t o morph betwee n
only the moderate (mf) and loud () lter curves.
DEF Filter Coecients
e remainder of the DEF lter settings are stored on a sub-region basis in the articulation data found in
the Editor’s parameter list:
e PRF and DEF lt ers were designed to addr ess and emulate the cha racteristics of samples whos e pitch
and dynamics have been transposed. For this reason, this musically ad apted lter does not behav e like a
traditional EQ; the settings of o ne parameter aect the next. Experimentation is e ncouraged. It might also
be helpful to use a Frequency Analysis Plug-in at rst to get a feel for each lter parameter.
Giga’s morphing lters are composed of four independent parameters that aect the overall shape and
volume of the lter: cuto frequency, Q, Q0H, and V0 . Each parameter has a ra nge of 0 to 127. e rst
three parameters aect the timbre of the lter (frequency and Q) while the fourth parameter (V0) is used
for volume compensation.
Cuto Frequency (Fc)– Determines the initial center freque ncy for the Q0 Quality factor .
Q – Simultaneously d etermines gai n, Quality (lt er width) and a ce nter frequency o set relativ e to
the initial Fc setting.
Q0H – is high freque ncy quality factor has a x ed center frequency near 7.5 khz a nd is
especially helpful i n de-emphasizin g the harsh overt ones of upward ly transposed sam ples.
V0 – Initially designed to compensat e for any gain attenuation im posed by the lter, V0 ca n also
be used creatively to increase the dy namic range of an instru ment, achieving soer pianiss imos
and bolder fortes.
DEF morphing capability:
ere are three “sets” of the four param eters explained above for each of an instruments sub-regions. ese
three sets of lter parameters (pp, mf, and ) were desig ned to correspond to the dynamic ra nge of an
instrument and re present the minim um, median, a nd maximum DEF settings as d ened by the lter
modulation sources: