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fil_type / fil2_type

Filter type.

Allows you to choose which type of filter you use if not specified (ie.: only cutoff and resonance in the SFZ).

fil_type was created in SFZ v1, so under that specification level only the v1 filters listed below are supported.

fil2_type was added later in SFZ v2 as a second filter to be used in series, so under the v2 specification level both opcodes include both v1 and v2 filters.

ARIA adds three more possible values for both opcodes.

Examples #


Passive tone controls in guitars are one-pole low pass filters. Typical subtractive synthesizer filters are two-pole filters.


The combination of fil and fil2 can be used to have, for example, both a high-pass and a low-pass filter, like this. In the below example, the first filter does not have a type set explicitly, so fil_type defaults to lpf_2p, making it a lowpass filter. The second filter is set to be a highpass filter.


Players support #

Both ARIA and LinuxSampler supports all SFZ v1 filter types. The following table describes which SFZ v2 and ARIA extension filter types they support. lsh, hsh and peq are ARIA extensions, allowing filters to be used as low-shelf, high-shelf or up to two additional parametric EQ bands, in addition to the default three eqN bands. Filters of these three types use fil_gain or fil2_gain to set the gain of the shelf or band.

Type Description ARIA LinuxSampler Version
lpf_1p One-pole low pass filter (6dB/octave) SFZ v1
hpf_1p One-pole high pass filter (6dB/octave) SFZ v1
lpf_2p Two-pole low pass filter (12dB/octave) SFZ v1
hpf_2p Two-pole high pass filter (12dB/octave) SFZ v1
bpf_2p Two-pole band pass filter (12dB/octave) SFZ v1
brf_2p Two-pole band rejection filter (12dB/octave) SFZ v1
bpf_1p One-pole band pass filter (6dB/octave) X SFZ v2
brf_1p One-pole band rejection filter (6dB/octave) X SFZ v2
apf_1p One-pole all pass filter (6dB/octave) X X SFZ v2
lpf_2p_sv Two-pole low pass state variable filter (12dB/octave) X X SFZ v2
hpf_2p_sv Two-pole high pass state variable filter (12dB/octave) X X SFZ v2
bpf_2p_sv Two-pole band pass state variable filter (12dB/octave) X X SFZ v2
brf_2p_sv Two-pole band rejection state variable filter (12dB/octave) X X SFZ v2
pkf_2p Two-pole peak filter (12dB/octave) X X SFZ v2
lpf_4p Four-pole low pass filter (24dB/octave) SFZ v2
hpf_4p Four-pole high pass filter (24dB/octave) SFZ v2
lpf_6p Six-pole low pass filter (36dB/octave) SFZ v2
hpf_6p Six-pole high pass filter (36dB/octave) SFZ v2
comb Comb filter X X SFZ v2
pink Pink noise filter X X SFZ v2
lsh Low shelf X ARIA
hsh High shelf X ARIA
peq Parametric EQ X ARIA
Name Version Type Default Range
fil_type SFZ v1 string lpf_2p lpf_1p, hpf_1p, lpf_2p, hpf_2p, bpf_2p, brf_2p
SFZ v2 bpf_1p, brf_1p, apf_1p, lpf_2p_sv, hpf_2p_sv, bpf_2p_sv, brf_2p_sv, pkf_2p, lpf_4p, hpf_4p, lpf_6p, hpf_6p, comb, pink
ARIA lsh, hsh, peq

Category: Performance Parameters, Filter