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SFZ Opcodes

All opcodes, including extensions, in an indexed alphabetical order.

Note that modulations such as (on)ccN, and vel2* opcodes are included in the pages describing the parameters they modulate.

#* A B C D E F G H IK L M N O P R S T V W X

#* #

Opcode Description Version
#define Creates a variable and gives it a value. SFZ v2
#include A special directive, which allows using SFZ files as building blocks for creating larger, more complex SFZ files. ARIA
*_mod Determines whether a parameter is modulated by addition or multiplication. ARIA

A #

Opcode Description Version
amp_keycenter Center key for amplifier keyboard tracking. In this key, the amplifier keyboard tracking will have no effect. SFZ v1
amp_keytrack Amplifier keyboard tracking (change in amplitude per key) in decibels. SFZ v1
amp_random Random volume for the region, in decibels. SFZ v1
amp_velcurve_N User-defined amplifier velocity curve. SFZ v1
amp_veltrack Amplifier velocity tracking, represents how much the amplitude changes with incoming note velocity. SFZ v1
ampeg_attack EG attack time. SFZ v1
ampeg_attackccN SFZ v1
ampeg_vel2attack Velocity effect on EG attack time. SFZ v1
ampeg_attack_shape Specifies the curvature of attack stage of the envelope. ARIA
ampeg_decay EG decay time. SFZ v1
ampeg_decayccN SFZ v1
ampeg_decay_curveccN
ampeg_vel2decay Velocity effect on pitch EG decay time. SFZ v1
ampeg_decay_shape Specifies the curvature of decay stage of the envelope. ARIA
ampeg_decay_zero Specifies how decay time is calculated. ARIA
ampeg_delay EG delay time. SFZ v1
ampeg_delayccN SFZ v1
ampeg_vel2delay Velocity effect on EG delay time. SFZ v1
ampeg_dynamic Specifies when envelope durations are recalculated. ARIA
ampeg_hold EG hold time. SFZ v1
ampeg_holdccN SFZ v1
ampeg_hold_curveccN
ampeg_vel2hold Velocity effect on EG hold time. SFZ v1
ampeg_release EG release time (after note release). SFZ v1
ampeg_releaseccN SFZ v1
ampeg_vel2release Velocity effect on EG release time. SFZ v1
ampeg_release_shape Specifies the curvature of release stage of the envelope. ARIA
ampeg_release_zero Specifies how release time is calculated. ARIA
ampeg_start Envelope start level, in percentage. SFZ v1
ampeg_startccN SFZ v1
ampeg_sustain EG sustain level, in percentage. SFZ v1
ampeg_sustainccN SFZ v1
ampeg_sustain_curveccN
ampeg_vel2sustain Velocity effect on EG sustain level, in percentage. SFZ v1
amplfo_delay The time before the LFO starts oscillating. SFZ v1
amplfo_depth LFO depth. SFZ v1
amplfo_depthccN SFZ v1
amplfo_depthchanaft LFO depth when channel aftertouch MIDI messages are received. SFZ v1
amplfo_depthpolyaft LFO depth when polyphonic aftertouch MIDI messages are received. SFZ v1
amplfo_fade LFO fade-in effect time. SFZ v1
amplfo_freq LFO frequency, in hertz. SFZ v1
amplfo_freqccN SFZ v1
amplfo_freqchanaft LFO frequency change when channel aftertouch MIDI messages are received, in Hertz. SFZ v1
amplfo_freqpolyaft LFO frequency change when polyphonic aftertouch MIDI messages are received, in Hertz. SFZ v1
amplitude Amplitude for the specified region in percentage of full amplitude. ARIA
amplitude_onccN ARIA
amplitude_curveccN ARIA
amplitude_smoothccN ARIA
apan_depth Cakewalk SFZ v2
apan_depth_onccN
apan_dry Cakewalk SFZ v2
apan_dry_onccN
apan_freq Cakewalk SFZ v2
apan_freq_onccN
apan_phase Cakewalk SFZ v2
apan_phase_onccN
apan_waveform LFO wave number. Cakewalk SFZ v2
apan_wet Cakewalk SFZ v2
apan_wet_onccN

B #

Opcode Description Version
bend_down Pitch bend range when Bend Wheel or Joystick is moved down, in cents. SFZ v1
bend_smooth Pitch bend smoothness. Adds “inertia” to pitch bends, so fast movements of the pitch bend wheel will have a delayed effect on the pitch change. SFZ v2
bend_step Pitch bend step, in cents. SFZ v1
bend_stepdown Pitch bend step, in cents, for downward pitch bends. SFZ v2
bend_stepup Pitch bend step, in cents, applied to upwards bends only. SFZ v2
bend_up Pitch bend range when Bend Wheel or Joystick is moved up, in cents. SFZ v1
bitred Bit reduction. Cakewalk SFZ v2
bitred_onccN Cakewalk SFZ v2
bitred_curveccN Cakewalk SFZ v2
bitred_smoothccN Cakewalk SFZ v2
bitred_stepccN Cakewalk SFZ v2
bus The target bus for the effect. SFZ v2
bypass_onccN Sets up a bypass controller for the effect. Cakewalk

C #

Opcode Description Version
comp_attack Cakewalk SFZ v2
comp_gain Cakewalk SFZ v2
comp_ratio Cakewalk SFZ v2
comp_release Cakewalk SFZ v2
comp_stlink Cakewalk SFZ v2
comp_threshold Cakewalk SFZ v2
count The number of times the sample will be played. SFZ v1
curve_index Curve ID definition. ARIA
cutoff Sets the cutoff frequency (Hz) of the filters. SFZ v1
cutoff_ccN The variation in the cutoff frequency when MIDI continuous controller N is received. SFZ v1
cutoff_curveccN SFZ v2
cutoff_smoothccN SFZ v2
cutoff_stepccN SFZ v2
cutoff_chanaft The variation in the cutoff frequency when MIDI channel aftertouch messages are received, in cents. SFZ v1
cutoff_polyaft The variation in the cutoff frequency when MIDI polyphonic aftertouch messages are received, in cents. SFZ v1
cutoff2 Same as cutoff, but used to specify the cutoff for the second filter. SFZ v2
cutoff2_onccN The variation in the cutoff frequency when MIDI continuous controller N is received. SFZ v2
cutoff2_curveccN SFZ v2
cutoff2_smoothccN SFZ v2
cutoff2_stepccN SFZ v2

D #

Opcode Description Version
decim Decimator. Cakewalk SFZ v2
decim_onccN Cakewalk SFZ v2
decim_curveccN Cakewalk SFZ v2
decim_smoothccN Cakewalk SFZ v2
decim_stepccN Cakewalk SFZ v2
default_path Relative path for samples. SFZ v2
delay Region delay time. SFZ v1
delay_ccN Region delay time after MIDI continuous controller N messages are received. If the region receives a note-off message before delay time, the region won't play. SFZ v1
delay_beats Delays the start of the region until a certain amount of musical beats are passed. SFZ v2
delay_cutoff Cakewalk SFZ v2
delay_cutoff_onccN
delay_damphi Cakewalk SFZ v2
delay_damphi_onccN
delay_damplo Cakewalk SFZ v2
delay_damplo_onccN
delay_dry Cakewalk SFZ v2
delay_dry_onccN
delay_feedback Cakewalk SFZ v2
delay_feedback_onccN
delay_filter Name of filter type. Cakewalk SFZ v2
delay_input Cakewalk SFZ v2
delay_input_onccN
delay_levelc Cakewalk SFZ v2
delay_levell Cakewalk SFZ v2
delay_levelr Cakewalk SFZ v2
delay_lfofreq Cakewalk SFZ v2
delay_lfofreq_onccN
delay_moddepth Cakewalk SFZ v2
delay_moddepth_onccN
delay_mode Cakewalk SFZ v2
delay_panc Cakewalk SFZ v2
delay_panc_onccN
delay_panl Cakewalk SFZ v2
delay_panl_onccN
delay_panr Cakewalk SFZ v2
delay_panr_onccN
delay_random Region random delay time. SFZ v1
delay_resonance Cakewalk SFZ v2
delay_resonance_onccN
delay_samples Allows the region playback to be postponed for the specified time, measured in samples (and therefore dependent on current sample rate). SFZ v2
delay_samples_onccN SFZ v2
delay_spread Cakewalk SFZ v2
delay_spread_onccN
delay_syncc_onccN Cakewalk SFZ v2
delay_syncl_onccN Cakewalk SFZ v2
delay_syncr_onccN Cakewalk SFZ v2
delay_time_tap Cakewalk SFZ v2
delay_timec Cakewalk SFZ v2
delay_timec_onccN
delay_timel Cakewalk SFZ v2
delay_timel_onccN
delay_timer Cakewalk SFZ v2
delay_timer_onccN
delay_wet Cakewalk SFZ v2
delay_wet_onccN
direction The direction in which the sample is to be played. SFZ v2
directtomain Gain of the main bus into the output. Cakewalk SFZ v2
disto_depth Cakewalk SFZ v2
disto_depth_onccN
disto_dry Cakewalk SFZ v2
disto_dry_onccN
disto_stages Cakewalk SFZ v2
disto_tone Cakewalk SFZ v2
disto_tone_onccN
disto_wet Cakewalk SFZ v2
disto_wet_onccN
dsp_order Signal flow type in Rapture's DSP block. Cakewalk

E #

Opcode Description Version
effect1 Level of effect1 send, in percentage (reverb in Cakewalk sfz). SFZ v1
effect2 Level of effect2 send, in percentage (chorus in Cakewalk sfz). SFZ v1
effect3 Gain of the region's send into the 3rd effect bus. SFZ v2
effect4 Gain of the region's send into the 4th effect bus. SFZ v2
egN_ampeg ARIA
egN_amplitude SFZ v2
egN_amplitude_onccX SFZ v2
egN_bitred Cakewalk SFZ v2
egN_bitred_onccX Cakewalk SFZ v2
egN_curveX Instructs the player to use a curve shape defined under a curve header for the specified envelope segment. SFZ v2
egN_cutoff SFZ v2
egN_cutoff_onccX SFZ v2
egN_cutoff2 SFZ v2
egN_cutoff2_onccX SFZ v2
egN_decim Cakewalk SFZ v2
egN_decim_onccX Cakewalk SFZ v2
egN_depth_lfoX SFZ v2
egN_depthadd_lfoX SFZ v2
egN_driveshape Cakewalk SFZ v2
egN_driveshape_onccX Cakewalk SFZ v2
egN_eqXbw SFZ v2
egN_eqXbw_onccY SFZ v2
egN_eqXfreq SFZ v2
egN_eqXfreq_onccY SFZ v2
egN_eqXgain SFZ v2
egN_eqXgain_onccY SFZ v2
egN_freq_lfoX SFZ v2
egN_levelX Sets the envelope level at a specific point in envelope number N. SFZ v2
egN_levelX_onccY SFZ v2
egN_loop SFZ v2
egN_loop_count SFZ v2
egN_noiselevel Cakewalk SFZ v2
egN_noiselevel_onccX Cakewalk SFZ v2
egN_noisestep Cakewalk SFZ v2
egN_noisestep_onccX Cakewalk SFZ v2
egN_noisetone Cakewalk SFZ v2
egN_noisetone_onccX Cakewalk SFZ v2
egN_pan SFZ v2
egN_pan_onccX SFZ v2
egN_pan_curve SFZ v2
egN_pan_curveccX SFZ v2
egN_pitch SFZ v2
egN_pitch_onccX SFZ v2
egN_points SFZ v2
egN_rectify Cakewalk SFZ v2
egN_rectify_onccX Cakewalk SFZ v2
egN_resonance SFZ v2
egN_resonance_onccX SFZ v2
egN_resonance2 SFZ v2
egN_resonance2_onccX SFZ v2
egN_ringmod Cakewalk SFZ v2
egN_ringmod_onccX Cakewalk SFZ v2
egN_shapeX SFZ v2
egN_sustain SFZ v2
egN_timeX SFZ v2
egN_timeX_onccY SFZ v2
egN_volume SFZ v2
egN_volume_onccX SFZ v2
egN_width SFZ v2
egN_width_onccX SFZ v2
end The endpoint of the sample. SFZ v1
eqN_bw Bandwidth of the equalizer band, in octaves. SFZ v1
eqN_bwccX SFZ v1
eqN_dynamic Specifies when EQ is recalculated. ARIA
eqN_freq Frequency of the equalizer band, in Hertz. SFZ v1
eqN_freqccX SFZ v1
eqN_vel2freq Frequency change of the equalizer band with MIDI velocity, in Hertz. SFZ v1
eqN_gain Gain of the equalizer band, in decibels. SFZ v1
eqN_gainccX SFZ v1
eqN_vel2gain Gain change of the equalizer band with MIDI velocity, in decibels. SFZ v1
eqN_type Sets the type of EQ filter. SFZ v2
eq_bw Cakewalk SFZ v2
eq_bw_onccN
eq_freq Cakewalk SFZ v2
eq_freq_onccN
eq_gain Cakewalk SFZ v2
eq_gain_onccN
eq_type Cakewalk SFZ v2

F #

Opcode Description Version
fil2_gain Gain for lsh, hsh and peq filter types. ARIA
fil2_gain_onccN
fil2_keycenter Same as fil_keycenter, but used to specify the type for the second filter. SFZ v2
fil2_keytrack Same as fil_keytrack, but used to specify the type for the second filter. SFZ v2
fil2_type Filter type. SFZ v2
fil2_veltrack Same as fil_veltrack, but used to specify the type for the second filter. SFZ v2
fil_gain Gain for lsh, hsh and peq filter types. ARIA
fil_gain_onccN
fil_keycenter Center key for filter keyboard tracking. SFZ v1
fil_keytrack Filter keyboard tracking (change on cutoff for each key) in cents. SFZ v1
fil_random Random value added to the filter cutoff for the region, in cents. SFZ v1
fil_type Filter type. SFZ v1
fil_veltrack Filter velocity tracking, the amount by which the cutoff changes with incoming note velocity, in cents. SFZ v1
fileg_attack EG attack time. SFZ v1
fileg_attack_onccN ARIA
fileg_vel2attack Velocity effect on EG attack time. SFZ v1
fileg_attack_shape Specifies the curvature of attack stage of the envelope. ARIA
fileg_decay EG decay time. SFZ v1
fileg_decay_onccN ARIA
fileg_vel2decay Velocity effect on filter EG decay time. SFZ v1
fileg_decay_shape Specifies the curvature of decay stage of the envelope. ARIA
fileg_decay_zero Specifies how decay time is calculated. ARIA
fileg_delay EG delay time. SFZ v1
fileg_delay_onccN ARIA
fileg_vel2delay Velocity effect on filter EG delay time. SFZ v1
fileg_depth Envelope depth. SFZ v1
fileg_depth_onccN ARIA
fileg_vel2depth Velocity effect on EG depth, in cents for pitch or filter cutoff. SFZ v1
fileg_dynamic Specifies when envelope durations are recalculated. ARIA
fileg_hold EG hold time. SFZ v1
fileg_hold_onccN ARIA
fileg_vel2hold Velocity effect on EG hold time. SFZ v1
fileg_release EG release time (after note release). SFZ v1
fileg_release_onccN ARIA
fileg_vel2release Velocity effect on EG release time. SFZ v1
fileg_release_shape Specifies the curvature of release stage of the envelope. ARIA
fileg_release_zero Specifies how release time is calculated. ARIA
fileg_start Envelope start level, in percentage. SFZ v1
fileg_start_onccN ARIA
fileg_sustain EG sustain level, in percentage. SFZ v1
fileg_sustain_onccN ARIA
fileg_vel2sustain Velocity effect on EG sustain level, in percentage. SFZ v1
fillfo_delay The time before the LFO starts oscillating. SFZ v1
fillfo_depth LFO depth. SFZ v1
fillfo_depthccN SFZ v1
fillfo_depthchanaft LFO depth when channel aftertouch MIDI messages are received. SFZ v1
fillfo_depthpolyaft LFO depth when polyphonic aftertouch MIDI messages are received. SFZ v1
fillfo_fade LFO fade-in effect time. SFZ v1
fillfo_freq LFO frequency, in hertz. SFZ v1
fillfo_freqccN SFZ v1
fillfo_freqchanaft LFO frequency change when channel aftertouch MIDI messages are received, in Hertz. SFZ v1
fillfo_freqpolyaft LFO frequency change when polyphonic aftertouch MIDI messages are received, in Hertz. SFZ v1
filter_cutoff Cakewalk SFZ v2
filter_cutoff_onccN
filter_resonance Cakewalk SFZ v2
filter_resonance_onccN
filter_type Name of filter type. Cakewalk SFZ v2
fxNtomain Gain of the Nth effect bus into the output. Cakewalk SFZ v2
fxNtomix Gain of the Nth effect bus into the Mix node. Cakewalk

G #

Opcode Description Version
gate_attack Cakewalk SFZ v2
gate_onccN Gate manual control. Cakewalk SFZ v2
gate_release Cakewalk SFZ v2
gate_stlink Cakewalk SFZ v2
gate_threshold Cakewalk SFZ v2
global_amplitude ARIA extension, like amplitude, but affecting everything when set under the ‹global› header. ARIA
global_label An ARIA extension which sets what is displayed in the default info tab of Sforzando. ARIA
global_volume ARIA extension, like volume, but affecting everything when set under the ‹global› header. ARIA
group Exclusive group number for this region. SFZ v1
group_amplitude ARIA extension, like amplitude, but affecting everything when set under the ‹group› header. ARIA
group_label An ARIA extension which sets what is displayed in the default info tab of Sforzando. ARIA
group_volume ARIA extension, like volume, but affecting everything when set under the ‹group› header. ARIA

H #

Opcode Description Version
hibend Defines the range of the last Pitch Bend message required for the region to play. SFZ v1
hibpm Host tempo value. SFZ v1
hiccN Defines the range of the last MIDI controller N required for the region to play. SFZ v1
hichan If incoming notes have a MIDI channel between lochan and hichan, the region will play. SFZ v1
hichanaft Defines the range of last Channel Aftertouch message required for the region to play. SFZ v1
hihdccN Like hiccN but with floating point MIDI CCs ARIA
hikey Determine the high boundary of a certain region. SFZ v1
hint_* Its a 'hint' to the ARIA engine, others implementations don't have to follow. ARIA
hipolyaft Defines the range of last Polyphonic Aftertouch message required for the region to play. SFZ v1
hiprog The region plays when the MIDI program number is between loprog and hiprog. SFZ v2
hirand The region will play if the random number is equal to or higher than lorand, and lower than hirand. SFZ v1
hitimer Region plays if timer is between lotimer and hitimer. SFZ v2
hivel If a note with velocity value equal to or higher than lovel AND equal to or lower than hivel is played, the region will play. SFZ v1

IK #

Opcode Description Version
image Cakewalk SFZ v2
internal Cakewalk internal features switch. Cakewalk
key Equivalent to using lokey, hikey and pitch_keycenter and setting them all to the same note value. SFZ v1

L #

Opcode Description Version
label_ccN Creates a label for the MIDI CC. ARIA
lfoN_amplitude SFZ v2
lfoN_amplitude_onccX SFZ v2
lfoN_amplitude_smoothccX SFZ v2
lfoN_amplitude_stepccX SFZ v2
lfoN_bitred Cakewalk SFZ v2
lfoN_bitred_onccX Cakewalk SFZ v2
lfoN_bitred_smoothccX Cakewalk SFZ v2
lfoN_bitred_stepccX Cakewalk SFZ v2
lfoN_count Number of LFO repetitions for LFO N before the LFO stops. SFZ v2
lfoN_cutoff SFZ v2
lfoN_cutoff_onccX SFZ v2
lfoN_cutoff_smoothccX SFZ v2
lfoN_cutoff_stepccX SFZ v2
lfoN_cutoff2 SFZ v2
lfoN_cutoff2_onccX SFZ v2
lfoN_cutoff2_smoothccX SFZ v2
lfoN_cutoff2_stepccX SFZ v2
lfoN_decim Cakewalk SFZ v2
lfoN_decim_onccX Cakewalk SFZ v2
lfoN_decim_smoothccX Cakewalk SFZ v2
lfoN_decim_stepccX Cakewalk SFZ v2
lfoN_delay Onset delay for LFO number N. SFZ v2
lfoN_delay_onccX SFZ v2
lfoN_depth_lfoX SFZ v2
lfoN_depthadd_lfoX SFZ v2
lfoN_drive Cakewalk SFZ v2
lfoN_drive_onccX Cakewalk SFZ v2
lfoN_drive_smoothccX Cakewalk SFZ v2
lfoN_drive_stepccX Cakewalk SFZ v2
lfoN_eqXbw SFZ v2
lfoN_eqXbw_onccY SFZ v2
lfoN_eqXbw_smoothccY SFZ v2
lfoN_eqXbw_stepccY SFZ v2
lfoN_eqXfreq SFZ v2
lfoN_eqXfreq_onccY SFZ v2
lfoN_eqXfreq_smoothccY SFZ v2
lfoN_eqXfreq_stepccY SFZ v2
lfoN_eqXgain SFZ v2
lfoN_eqXgain_onccY SFZ v2
lfoN_eqXgain_smoothccY SFZ v2
lfoN_eqXgain_stepccY SFZ v2
lfoN_fade Fade-in time for LFO number N. SFZ v2
lfoN_fade_onccX SFZ v2
lfoN_freq The base frequency of LFO number N, in Hertz. SFZ v2
lfoN_freq_onccX SFZ v2
lfoN_freq_smoothccX SFZ v2
lfoN_freq_stepccX SFZ v2
lfoN_freq_lfoX SFZ v2
lfoN_freq_lfoX_onccY ARIA
lfoN_noiselevel Cakewalk SFZ v2
lfoN_noiselevel_onccX Cakewalk SFZ v2
lfoN_noiselevel_smoothccX Cakewalk SFZ v2
lfoN_noiselevel_stepccX Cakewalk SFZ v2
lfoN_noisestep Cakewalk SFZ v2
lfoN_noisestep_onccX Cakewalk SFZ v2
lfoN_noisestep_smoothccX Cakewalk SFZ v2
lfoN_noisestep_stepccX Cakewalk SFZ v2
lfoN_noisetone Cakewalk SFZ v2
lfoN_noisetone_onccX Cakewalk SFZ v2
lfoN_noisetone_smoothccX Cakewalk SFZ v2
lfoN_noisetone_stepccX Cakewalk SFZ v2
lfoN_offset DC offset - Add to LFO output; not affected by scale. ARIA
lfoN_pan SFZ v2
lfoN_pan_onccX SFZ v2
lfoN_pan_smoothccX SFZ v2
lfoN_pan_stepccX SFZ v2
lfoN_phase Initial phase shift for LFO number N. SFZ v2
lfoN_phase_onccX SFZ v2
lfoN_pitch SFZ v2
lfoN_pitch_curveccX
lfoN_pitch_onccX SFZ v2
lfoN_pitch_smoothccX SFZ v2
lfoN_pitch_stepccX SFZ v2
lfoN_ratio Sets the ratio between the specified sub waveform and the main waveform. ARIA
lfoN_resonance SFZ v2
lfoN_resonance_onccX SFZ v2
lfoN_resonance_smoothccX SFZ v2
lfoN_resonance_stepccX SFZ v2
lfoN_resonance2 SFZ v2
lfoN_resonance2_onccX SFZ v2
lfoN_resonance2_smoothccX SFZ v2
lfoN_resonance2_stepccX SFZ v2
lfoN_scale Sets the scaling between the specified sub waveform and the main waveform. ARIA
lfoN_smooth SFZ v2
lfoN_smooth_onccX SFZ v2
lfoN_stepX Level of the step number X in LFO step sequencer. SFZ v2
lfoN_stepX_onccY SFZ v2
lfoN_steps Number of steps in LFO step sequencer. SFZ v2
lfoN_volume SFZ v2
lfoN_volume_onccX SFZ v2
lfoN_volume_smoothccX SFZ v2
lfoN_volume_stepccX SFZ v2
lfoN_wave LFO waveform selection. SFZ v2
lfoN_wave_onccX ARIA
lfoN_waveX Select the waveform type used for the waveform number X (max 8) for LFO number N, with the same allowed values as lfoN_wave normally can use. ARIA
lfoN_width SFZ v2
lfoN_width_onccX SFZ v2
lfoN_width_smoothccX SFZ v2
lfoN_width_stepccX SFZ v2
load_end Cakewalk SFZ v2
load_mode Cakewalk SFZ v2
load_start Cakewalk SFZ v2
lobend Defines the range of the last Pitch Bend message required for the region to play. SFZ v1
lobpm Host tempo value. SFZ v1
loccN Defines the range of the last MIDI controller N required for the region to play. SFZ v1
lochan If incoming notes have a MIDI channel between lochan and hichan, the region will play. SFZ v1
lochanaft Defines the range of last Channel Aftertouch message required for the region to play. SFZ v1
lohdccN Like loccN but with floating point MIDI CCs ARIA
lokey Determine the low boundary of a certain region. SFZ v1
loop_count The number of times a loop will repeat. SFZ v2
loop_crossfade Loop cross fade. SFZ v2
loop_end The loop end point, in samples. SFZ v1
loop_mode Allows playing samples with loops defined in the unlooped mode. SFZ v1
loop_start The loop start point, in samples. SFZ v1
loop_type Defines the looping mode. SFZ v2
lopolyaft Defines the range of last Polyphonic Aftertouch message required for the region to play. SFZ v1
loprog The region plays when the MIDI program number is between loprog and hiprog. SFZ v2
lorand The region will play if the random number is equal to or higher than lorand, and lower than hirand. SFZ v1
lotimer Region plays if timer is between lotimer and hitimer. SFZ v2
lovel If a note with velocity value equal to or higher than lovel AND equal to or lower than hivel is played, the region will play. SFZ v1

M #

Opcode Description Version
master_amplitude ARIA extension, like amplitude, but affecting everything when set under the ‹master› header. ARIA
master_label An ARIA extension which sets what is displayed in the default info tab of Sforzando. ARIA
master_volume ARIA extension, like volume, but affecting everything when set under the ‹master› header. ARIA
md5 Calculates the MD5 digital fingerprint hash of a sample file, represented as a sequence of 32 hexadecimal digits. SFZ v2

N #

Opcode Description Version
noise_filter Cakewalk SFZ v2
noise_level Cakewalk SFZ v2
noise_level_onccN Cakewalk SFZ v2
noise_level_smoothccN Cakewalk SFZ v2
noise_step Cakewalk SFZ v2
noise_step_onccN Cakewalk SFZ v2
noise_stereo Cakewalk SFZ v2
noise_tone Cakewalk SFZ v2
noise_tone_onccN Cakewalk SFZ v2
note_offset Tells SFZ to shift all incoming MIDI data by the specified number of notes. SFZ v2
note_polyphony Polyphony limit for playing the same note repeatedly. SFZ v2
note_selfmask Controls note-stealing behavior for a single pitch, when using note_polyphony. SFZ v2

O #

Opcode Description Version
octave_offset Shifts all incoming MIDI data by the specified octave. SFZ v2
off_by Region off group. SFZ v1
off_curve When off_mode is set to time, this specifies the math to be used to fade out the regions being muted by voice-stealing. ARIA
off_mode Region off mode. SFZ v1
off_shape The coefficient used by off_curve. ARIA
off_time When off_mode is set to time, this specifies the fadeout time for regions being muted by voice-stealing. ARIA
offset The offset used to play the sample. SFZ v1
offset_ccN The offset used to play the sample according to last position of MIDI continuous controller N. SFZ v1
offset_random Random offset added to the region offset. SFZ v1
on_hiccN If a MIDI control message with a value between on_loccN and on_hiccN is received, the region will play. Default value is -1, it means unassigned. SFZ v1
on_hihdccN Like on_hiccN but with floating point MIDI CCs. ARIA
on_loccN If a MIDI control message with a value between on_loccN and on_hiccN is received, the region will play. Default value is -1, it means unassigned. SFZ v1
on_lohdccN Like on_loccN but with floating point MIDI CCs. ARIA
oscillator Cakewalk SFZ v2
oscillator_detune Cakewalk SFZ v2
oscillator_detune_onccN Cakewalk SFZ v2
oscillator_mod_depth Cakewalk SFZ v2
oscillator_mod_depth_onccN Cakewalk SFZ v2
oscillator_mod_smoothccN Cakewalk SFZ v2
oscillator_mode The modulation type. Cakewalk SFZ v2
oscillator_multi Configure a region to use more than one oscillator. Cakewalk SFZ v2
oscillator_phase Oscillator phase. Negative values for random phase. Cakewalk SFZ v2
oscillator_quality Cakewalk SFZ v2
oscillator_table_size Cakewalk SFZ v2
output The stereo output number for this region. SFZ v1

P #

Opcode Description Version
pan The panoramic position for the region. SFZ v1
pan_onccN Cakewalk SFZ v2
pan_curveccN Cakewalk SFZ v2
pan_smoothccN Cakewalk SFZ v2
pan_stepccN Cakewalk SFZ v2
pan_keycenter Center key for pan keyboard tracking. SFZ v2
pan_keytrack The amount by which the panning of a note is shifted with each key. SFZ v2
pan_law Sets the pan law to be used. ARIA
pan_veltrack The effect of note velocity on panning. SFZ v2
param_offset Adds a number to the parameter numbers of built-in or vendor-specific effects. ARIA
phase If invert is set, the region is played with inverted phase. SFZ v2
phaser_depth Cakewalk SFZ v2
phaser_depth_onccN
phaser_feedback Cakewalk SFZ v2
phaser_feedback_onccN
phaser_freq Cakewalk SFZ v2
phaser_freq_onccN
phaser_phase_onccN Cakewalk SFZ v2
phaser_stages Cakewalk SFZ v2
phaser_waveform LFO wave number. Cakewalk SFZ v2
phaser_wet Cakewalk SFZ v2
phaser_wet_onccN
pitch Pitch change in cents. ARIA alias for tune. ARIA
pitch_onccN SFZ v2
pitch_curveccN SFZ v2
pitch_smoothccN SFZ v2
pitch_stepccN SFZ v2
pitch_keycenter Root key for the sample. SFZ v1
pitch_keytrack Within the region, this value defines how much the pitch changes with every note. SFZ v1
pitch_random Random tuning for the region, in cents. SFZ v1
pitch_veltrack Pitch velocity tracking, represents how much the pitch changes with incoming note velocity, in cents. SFZ v1
pitcheg_attack EG attack time. SFZ v1
pitcheg_attack_onccN ARIA
pitcheg_vel2attack Velocity effect on EG attack time. SFZ v1
pitcheg_attack_shape Specifies the curvature of attack stage of the envelope. ARIA
pitcheg_decay EG decay time. SFZ v1
pitcheg_decay_onccN ARIA
pitcheg_vel2decay Velocity effect on filter EG decay time. SFZ v1
pitcheg_decay_shape Specifies the curvature of decay stage of the envelope. ARIA
pitcheg_decay_zero Specifies how decay time is calculated. ARIA
pitcheg_delay EG delay time. SFZ v1
pitcheg_delay_onccN ARIA
pitcheg_vel2delay Velocity effect on filter EG delay time. SFZ v1
pitcheg_depth Envelope depth. SFZ v1
pitcheg_depth_onccN ARIA
pitcheg_vel2depth Velocity effect on EG depth, in cents for pitch or filter cutoff. SFZ v1
pitcheg_dynamic Specifies when envelope durations are recalculated. ARIA
pitcheg_hold EG hold time. SFZ v1
pitcheg_hold_onccN ARIA
pitcheg_vel2hold Velocity effect on EG hold time. SFZ v1
pitcheg_release EG release time (after note release). SFZ v1
pitcheg_release_onccN ARIA
pitcheg_vel2release Velocity effect on EG release time. SFZ v1
pitcheg_release_shape Specifies the curvature of release stage of the envelope. ARIA
pitcheg_release_zero Specifies how release time is calculated. ARIA
pitcheg_start Envelope start level, in percentage. SFZ v1
pitcheg_start_onccN ARIA
pitcheg_sustain EG sustain level, in percentage. SFZ v1
pitcheg_sustain_onccN ARIA
pitcheg_vel2sustain Velocity effect on EG sustain level, in percentage. SFZ v1
pitchlfo_delay The time before the LFO starts oscillating. SFZ v1
pitchlfo_depth LFO depth. SFZ v1
pitchlfo_depthccN SFZ v1
pitchlfo_depthchanaft LFO depth when channel aftertouch MIDI messages are received. SFZ v1
pitchlfo_depthpolyaft LFO depth when polyphonic aftertouch MIDI messages are received. SFZ v1
pitchlfo_fade LFO fade-in effect time. SFZ v1
pitchlfo_freq LFO frequency, in hertz. SFZ v1
pitchlfo_freqccN SFZ v1
pitchlfo_freqchanaft LFO frequency change when channel aftertouch MIDI messages are received, in Hertz. SFZ v1
pitchlfo_freqpolyaft LFO frequency change when polyphonic aftertouch MIDI messages are received, in Hertz. SFZ v1
polyphony Polyphony voice limit. SFZ v2
polyphony_group An alias for group to reduce the confusion between the group opcode and the ‹group› header. ARIA
position Only operational for stereo samples, position defines the position in the stereo field of a stereo signal, after channel mixing as defined in the width opcode. SFZ v1

R #

Opcode Description Version
region_label An ARIA extension which sets what is displayed in the default info tab of Sforzando. ARIA
resonance The filter cutoff resonance value, in decibels. SFZ v1
resonance_onccN SFZ v2
resonance_curveccN SFZ v2
resonance_smoothccN SFZ v2
resonance_stepccN SFZ v2
resonance2 Same as resonance, but used to specify the resonance for the second filter. SFZ v2
resonance2_onccN SFZ v2
resonance2_curveccN SFZ v2
resonance2_smoothccN SFZ v2
resonance2_stepccN SFZ v2
reverb_damp Cakewalk SFZ v2
reverb_damp_onccN
reverb_dry Cakewalk SFZ v2
reverb_dry_onccN
reverb_input Cakewalk SFZ v2
reverb_input_onccN
reverb_predelay Cakewalk SFZ v2
reverb_predelay_onccN
reverb_size Cakewalk SFZ v2
reverb_size_onccN
reverb_tone Cakewalk SFZ v2
reverb_tone_onccN
reverb_type Cakewalk SFZ v2
reverb_wet Cakewalk SFZ v2
reverb_wet_onccN
reverse_hiccN If MIDI CC N is between reverse_loccN and reverse_hiccN, the region plays reversed. SFZ v2
reverse_loccN If MIDI CC N is between reverse_loccN and reverse_hiccN, the region plays reversed. SFZ v2
rt_dead Controls whether a release sample should play if its sustain sample has ended, or not. SFZ v2
rt_decay Applies only to regions that triggered through trigger=release. The volume decrease (in decibels) per seconds after the note has been attacked. SFZ v1

S #

Opcode Description Version
sample Defines which sample file the region will play. SFZ v1
sample_quality Cakewalk SFZ v2
script Allows to load real-time instrument scripts for SFZ instruments. LinuxSampler
seq_length Sequence length, used together with seq_position to use samples as round robins. SFZ v1
seq_position Sequence position. The region will play if the internal sequence counter is equal to seq_position. SFZ v1
set_ccN Sets a default initial value for MIDI CC number N, when the instrument is initially loaded. SFZ v2
set_hdccN Like set_ccN but with floating point MIDI CCs. ARIA
sostenuto_cc Reassigns the sostenuto pedal CC to a non-standard value. ARIA
sostenuto_lo Sets the minimum point at which the sostenuto pedal (MIDI CC 66) is considered 'down'. ARIA
sostenuto_sw Turns the sostenuto switch on or off. SFZ v2
start_hiccN If a MIDI control message with a value between start_loccN and start_hiccN is received, the region will play. Alias for on_hiccN. Default value is -1, it means unassigned. SFZ v2
start_hihdccN Like start_hiccN but with floating point MIDI CCs. ARIA
start_loccN If a MIDI control message with a value between start_loccN and start_hiccN is received, the region will play. Alias for on_loccN. Default value is -1, it means unassigned. SFZ v2
start_lohdccN Like start_loccN but with floating point MIDI CCs. ARIA
static_cyclic_level Cakewalk SFZ v2
static_cyclic_time Cakewalk SFZ v2
static_filter Name of filter type. Cakewalk SFZ v2
static_level Cakewalk SFZ v2
static_level_onccN
static_random_level Cakewalk SFZ v2
static_random_maxtime Cakewalk SFZ v2
static_random_mintime Cakewalk SFZ v2
static_stereo Cakewalk SFZ v2
static_tone Cakewalk SFZ v2
stop_beats Stops a region after a certain amount of beats have played. SFZ v2
stop_hiccN If a MIDI control message with a value between stop_loccN and stop_hiccN is received, the region will stop playing. Default value is -1, it means unassigned. SFZ v2
stop_hihdccN Like stop_hiccN but with floating point MIDI CCs. ARIA
stop_loccN If a MIDI control message with a value between stop_loccN and stop_hiccN is received, the region will stop playing. Default value is -1, it means unassigned. SFZ v2
stop_lohdccN Like stop_loccN but with floating point MIDI CCs. ARIA
strings_number Number of synthesized resonant strings. Cakewalk SFZ v2
strings_wet_onccN Cakewalk SFZ v2
sustain_cc Reassigns the sustain pedal CC to a non-standard value. ARIA
sustain_lo Sets the minimum point at which the sustain pedal (MIDI CC 64) is considered 'down'. ARIA
sustain_sw Turns the sustain switch on or off. SFZ v2
sw_default Define keyswitch 'power on default' so that you hear something when a patch loads. SFZ v2
sw_down Enables the region to play if the key equal to sw_down value is depressed. Key has to be in the range specified by sw_lokey and sw_hikey. SFZ v1
sw_hikey Defines the range of the keyboard to be used as trigger selectors for the sw_last opcode. SFZ v1
sw_hilast Like sw_last, but allowing a region to be triggered across a range of keyswitches. ARIA
sw_label Label for activated keyswitch on GUI. ARIA
sw_last Enables the region to play if the last key pressed in the range specified by sw_lokey and sw_hikey is equal to the sw_last value. SFZ v1
sw_lokey Defines the range of the keyboard to be used as trigger selectors for the sw_last opcode. SFZ v1
sw_lolast Like sw_last, but allowing a region to be triggered across a range of keyswitches. ARIA
sw_note_offset Follows the same logic as SFZ 2.0’s note_offset but for key switches. ARIA
sw_octave_offset Follows the same logic as SFZ 2.0’s octave_offset but for key switches. ARIA
sw_previous Previous note value. The region will play if last note-on message was equal to sw_previous value. SFZ v1
sw_up Enables the region to play if the key equal to sw_up value is not depressed. SFZ v1
sw_vel Allows overriding the velocity for the region with the velocity of the previous note. SFZ v1
sync_beats Region playing synchronization to host position. SFZ v1
sync_offset Region playing synchronization to host position offset. SFZ v1

T #

Opcode Description Version
tdfir_dry Cakewalk SFZ v2
tdfir_dry_onccN
tdfir_gain Cakewalk SFZ v2
tdfir_impulse Cakewalk SFZ v2
tdfir_wet Cakewalk SFZ v2
tdfir_wet_onccN
transpose The transposition value for this region which will be applied to the sample. SFZ v1
trigger Sets the trigger which will be used for the sample to play. SFZ v1
tune The fine tuning for the sample, in cents. SFZ v1
type Effect type or vendor-specific effect name. Varies across SFZ players. SFZ v2

V #

Opcode Description Version
vN SFZ v2
varNN_mod Specifies the method used to calculate variable number NN from MIDI CCs. ARIA
varNN_onccX Specifies the method used to calculate variable number NN from MIDI CCs. ARIA
varNN_curveccX Specifies the ‹curve› number which MIDI CC X uses to modulate variable NN. ARIA
varNN_target Specifies the target for variable NN to modulate. ARIA
vendor_specific Defines vendor-specific effects, for example Garritan-specific stage depth effect in ARIA. ARIA
volume The volume for the region, in decibels. SFZ v1
gain_ccN Gain applied on MIDI control N, in decibels. SFZ v1
volume_curveccN ARIA
volume_smoothccN ARIA
volume_stepccN ARIA

W #

Opcode Description Version
waveguide Enables waveguide synthesis for the region. SFZ v2
width Only operational for stereo samples, width defines the amount of channel mixing applied to play the sample. SFZ v1
width_onccN Cakewalk SFZ v2
width_curveccN Cakewalk
width_smoothccN Cakewalk
width_stepccN Cakewalk

X #

Opcode Description Version
xf_cccurve MIDI controllers crossfade curve for the region. SFZ v1
xf_keycurve Keyboard crossfade curve for the region. SFZ v1
xf_velcurve Velocity crossfade curve for the region. SFZ v1
xfin_hiccN Fade in control based on MIDI CC. SFZ v1
xfin_hikey Fade in control based on MIDI note (keyboard position). SFZ v1
xfin_hivel Fade in control based on velocity. SFZ v1
xfin_loccN Fade in control based on MIDI CC. SFZ v1
xfin_lokey Fade in control based on MIDI note (keyboard position). SFZ v1
xfin_lovel Fade in control based on velocity. SFZ v1
xfout_hiccN Fade out control based on MIDI CC. SFZ v1
xfout_hikey Fade out control based on MIDI note number (keyboard position). SFZ v1
xfout_hivel Fade out control, based on velocity. SFZ v1
xfout_loccN Fade out control based on MIDI CC. SFZ v1
xfout_lokey Fade out control based on MIDI note number (keyboard position). SFZ v1
xfout_lovel Fade out control, based on velocity. SFZ v1