Filter Section - Behringer Neutron Bedienungsanleitung

11
NEUTRON User Manual

4.5 Filter Section

The Neutron has a powerful 12 dB filter with three modes available:
High Pass Filter (HPF)
Band Pass Filter (BPF)
Low Pass Filter (LPF)
The mode button steps through each filter mode.
The FREQ control sets the filter cutoff frequency. The RESO control adjusts the
resonance of the filter. When the resonance control is set to at, or close to,
maximum the VCF will become self-resonant and produce a sine wave tuned to
the cutoff frequency of the filter. This tone can be used in sound creation and
played in tune with the oscillators by activating KEY TRACK and tuning the VCF
using the FREQ control.
By default, the LFO is patched through the FILTER DEPTH control. This enables
modulation of the filter frequency using the LFO. The VCF has a second output
which is accessible from the patch bay (VCF 2). VCF 2 mode is determined by the
select VCF mode. The relationship is:
Mode = , VCF2 =
Mode = , VCF2 =
Mode = , VCF2 =
This allows for additional filter modes. For example, a notch filter can be created
when the filter mode is set to by summing VCF 1 and VCF 2, then patching the
summed output into OD IN.
KEY TRACK applies keyboard tracking to the VCF.
This sets the filter cutoff frequency based on the latest MIDI note received. The
base cutoff frequency is set using the FREQ control with MIDI notes increasing the
cutoff frequency relative to the note being played. Additionally, this allows the
filter to be played like an oscillator when the resonance control is turned up.
4.6 LFO Section
The Neutron LFO has a frequency range of 0.01 Hz to 10 kHz. This allows low
frequency modulation up to audio rate modulation using the LFO.
(13) (12)
The Shape control sets the type of LFO waveform. When selecting the LFO
waveform, the control can be set to select between fixed types or to blend
between wave shapes. The five LFO shapes are:
(14)
(15)
(16)
(17)
With KEY SYNC engaged, the LFO is re-triggered when a MIDI note is received.
Sine
Triangle
Sawtooth
Square
Reverse Sawtooth
(20)(18) (19)