cutoff / cutoff2
Sets the cutoff frequency (Hz) of the filters.
There are two filters in series - the cutoff frequency of one is controlled by cutoff, that of the second by cutoff2.
Cutoff can be controlled by modulators (MIDI Controllers, envelope generators, low frequency oscillators, velocity). Note that while the filter cutoff frequency is specified in Hertz, modulation amounts are given in cents.
See also: filter types and resonance.
Examples
In the following example, MIDI CC 1 is used for the first filter cutoff and channel and polyphonic aftertouch for the second filter (presuming only one of the two will be sent):
cutoff=343
cutoff2=1200
cutoff_cc1=1200
cutoff2_chanaft=1200
cutoff2_polyaft=1200
Both filters can be used be used to have both a high-pass and a low-pass filter, like this:
cutoff=1200
resonance=6
fil2_type=hpf_2p
cutoff2=250
resonance2=3
If you just want to test how cutoff modulations work, here is a simple example
using ARIA extended SFZ2 syntax for the <control> header,
with all notes at all velocities playing the same tone
and cutoff controlled by MIDI CC1:
<control>
set_hdcc1=1 label_cc1=Cutoff
<global>
cutoff=24000
cutoff_cc1=-9600
<region>
sample=*saw
pitch_keycenter=60
pitch=440
pitch_keytrack=0
amp_veltrack=0
volume=-9
Practical Considerations
Setting cutoff to 0 behaves differently in diffrent players:
- ARIA/sforzando : filter disabled, oncc disabled
- rgc sfz : filter off, oncc working
- Dimension Pro and Rapture : lowest cutoff value, oncc working
- sfizz : no sound
- BassMidi : filter off, no oncc support yet
| Name | Version | Type | Default | Range | Unit |
|---|---|---|---|---|---|
| cutoff | SFZ v1 | float | filter disabled | 0 to SampleRate / 2 | Hz |
| Modulations | |||||
| cutoff_ccN | integer | 0 | -9600 to 9600 | cents | |
| cutoff_curveccN | SFZ v2 | integer | 0 | 0 to 255 | N/A |
| cutoff_smoothccN | SFZ v2 | float | 0 | 0 to ? | ms |
| cutoff_stepccN | SFZ v2 | integer | 0 | 0 to ? | N/A |
| cutoff_chanaft | integer | 0 | -9600 to 9600 | cents | |
| cutoff_polyaft | integer | 0 | -9600 to 9600 | cents | |
Other modulations
- Envelope: fileg_depth
- LFO: fillfo_depth
Category: Performance Parameters, Filter