Rumble Filter - ENSONIQ DP/4+ Reference Manual

Section 2 — Algorithms

RUMBLE FILTER

Rumble Filter is a high pass filter in cascade with a low pass filter, fourth order (24dB per
octave). The high pass filter is good for eliminating turntable rumble. The low pass filter is good
for eliminating hiss. Alternatively, these filters can be used in a feedback routing with any other
effect.
01 — Mix
02 — Volume
See the descriptions under the Mix and Volume Parameters, in the beginning of this section. For
this algorithm, we recommend mid values of the Mix.
03 — HighPass Fc
Controls the boost or cut of the high pass filter frequency applied to the input signal.
04 — LowPass Fc
Controls the boost or cut of the low pass filter frequency applied to the input signal.
05 — Filter Gain
Because the cascade of high pass with low pass causes an insertion loss, this parameter allows
you to boost the filtered output signal.
06 — Mod1 Source
07 — Mod1 Destination
08 — Mod1 Param Range Min 12 — Mod2 Param Range Min
09 — Mod1 Param Range Max13 — Mod2 Param Range Max
See the descriptions under the Algorithm Modulators in the beginning of this section.
84
Range: 4 to 8000 Hz
Range: 100 Hz to 16 KHz
Range: -48 to +48 dB
10 — Mod2 Source
11 — Mod2 Destination
ENSONIQ DP/4+ Reference Manual