Instruction Manual
20.3. OPERATOR 307
Filter Shell and Display
Filter On- This turns the lter on and off. Turning it off when it is unused saves CPU power.
Filter Type- Low-pass, band-pass and high-pass are second order lters with resonance.
Their names imply the part of the spectrum they affect. The notch lter passes everything
apart from its center frequency and is more audible with low resonance settings.
Filter Frequency (Freq)- This denes the center or cutoff frequency of the lter. Note that
the resulting frequency may also be modulated by note velocity and by the lter envelope.
Filter Resonance (Res)- This denes the resonance around the lter frequency of the low-pass
and high-pass lters, and the width of the band-pass and notch lters.
Filter Frequency<Velocity (Freq<Vel)- Filter frequency is modulated by note velocity accord-
ing to this setting.
Filter Frequency<Key (Freq<Key)- Filter frequency is modulated by note pitch according to
this setting. A value of 100% means that the frequency doubles per octave. The center
point for this function is C3.
Filter Envelope Rates<Velocity (Time<Vel)- This parameter exists for lter, pitch, LFO and
volume envelopes. It is therefore listed in the section on envelopes.
Filter Frequency<Envelope (Envelope)- Filter frequency is modulated by the lter envelope
according to this setting. A value of 100% means that the envelope can create a maximum
frequency shift of approximately 9 octaves.
LFO Shell and Display
LFO On- This turns the LFO (low-frequency oscillator) on and off. Turning it off when it is
unused saves some CPU power.