KEYTEK CTS 2000 Instruction Manual page 49

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Family no. 11 : FILTER Display Fam. : FILTER
Group : FILTER
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ATTENTION: : The functions of the DCF ENVELOPE GENERATOR family are closely linked to the
CUTOff and E.G. LEVEL parameters of the FILTER family, in fact :
if CUTOFF = 128 and E.G.LEVEL greater than 0
or CUTOFF = 0 and E.G.LEVEL less than 0
or only E.G.LEVEL = 0
the functions of the DCF ENVELOPE GENERATOR family will have no effect.
Parameter : CUTOFF
Power meter : A
Display Par. CUTOFF FREQ ( z )
OLD xx NEW yy
Value xx/yy : from 1 to 128
Function :Adjusts the DCF cut-off frequency.
Your instrument is equipped with 4-pole, low-pass filters at 24dB per octave. These
filters
attenuated the high components and, depending on their position, let the
unaltered low frequencies that make up the audio signal.
When the filter cutoff approaches the fundamental frequency of the audio signal,
almost all harmonics are attenuated and the signal begins to approximate to
a sine wave (pure wave without harmonic content).
If the filters are positioned too low (below the fundamental frequency
of the note being played) you can even shut off the sound emission completely.
Parameter : RESONANCE
Power meter : B
Display Par. RESONANCE ( z )
OLD xx NEW yy
Value xx/yy : from 1 to 128
Function : Resonance control (also called "enphasis", "Regeneration" or "Q") raises
the frequency region around the cut-off point selected with the