KQ Sampei Manual

KQ Sampei Manual

Table of Contents

  1. Structure of Synthesizer
  2. Panels screen
  3. Patch Select screen
  4. Sound Set Manager screen
  5. Sound Set Configuration screen
  6. SMF Playback screen
  7. Preset screen
  8. Reset screen
  9. Param screen
  10. MIDI screen
  11. Preferences
  12. About the MPE function

Structure of Synthesizer

(OSC, LPF, 2 EG, 2 LFO) x voices
Reverb, Chorus

Panels screen

The number of panels can be set between 1-16.


The Mute/Solo button.
Long-press to set to Solo, normal tap to set to Mute.


You can change the part to be displayed.


Select a MIDI channel; Omni will process all channels.


Select a patch.


The range of Keyboard input.


Adjust the volume. The behavior is defined by the sound set.


Adjust the sound location. The behavior is defined by the sound set.

Reverb, Chorus

This is how the reverb and chorus effectors are applied. The behavior is defined by the sound set.
Depending on the sound set, setting the value to 0 might not disable it, or changing the value might be ignored.

Por, P.Time

Smoothly connects sounds with portamento; P.Time specifies the time of transition.


The Mono mode. Enable this if you want use only one voice.

P.Bend, Rng

Pitch Bend and its range. The range is 0-24 semitones in normal mode, 0-96 semitones in MPE mode.


Shifts the pitch by semitone units. Key Shift and Coarse Tune can be toggled in the settings.
With key shift, the pressed key is shifted. This is not valid for the rhythm part.
Coarse Tune changes the pitch of the note.


Fine Pitch. -100 to -98.4375 cents with values from 0 to 127.


Modulation wheel.
If GS Custom Controller is enabled, the standard is vibrato intensity.
If GS Custom Controller is disabled, the behavior is as defined in the sound set.

V.Rate, V.Depth, V.Delay

Vibrato Speed, Vibrato Depth, and Vibrato Delay. 64 is the center in relative value.

Attack, Decay, Release

Attack rate, Decay rate, and Release Rate of envelope generator. 64 is the center in relative value.


Cutoff Frequency of Low-pass Filter. 64 is the center in relative value.


Resonance of Low-pass Filter. 64 is the center in relative value.

Soft, Sost, Hold

Soft pedal, Sostenuto pedal, and Sustain pedal in piano.
The soft pedal is enabled by the Sound Set modifier.


The bar with vertical lines at the top is a scroll bar. Drag it to scroll the keyboard. Pinch out/pinch in to zoom in/out on the keyboard.
Tap a panel on the screen to change the keyboard channel to that panel.


Sound Velocity.


Modulation Wheel


Pitch Bend


Channel to send.


Hide or show the keyboard.

Patch Select screen


Patches with a star are listed.


You can reorder patches. If “None” is selected, the patches are ordered according to the order in which they appear in the sound set.


If this is enabled, the window will close when a patch is selected.

Search box

You can filter patches. In addition to entering a name, “prog1” can be specified as program #1, “bank0” as bank #0, etc.


Open Sound Set Manager screen.

Sound Set Manager screen

Only those that are active will be available in KQ Sampei. If you add a sound set, you must activate it manually.
Priority is from top to bottom.
Tap a sound set to go to the configuration screen.

Import Files

If you go back through the hierarchy from the top left button, you can select all files visible in the Files.app.


You can select a folder to manage sound sets.
If you select an external storage option, the internal storage will become unavailable.

iCloud Sync

You can synchronize the sound sets with iCloud drive.


You can select and delete sound sets.

Sound Set Configration screen

Load on Demand

Enabling this improves memory consumption and loading speed, but may cause noise.
Level 0: Disabled. All samples are loaded at launch.
Level 1: Loads samples when selecting a patch. Not recommended if you switch patches frequently.
Level 2: Loads samples when sounding a voice. Use only if you have a sound set that you just can’t load.

Fix Stereo

If the pan is at its maximum or minimum value in the sound set, the volume level on the opposite side is set to 0.
If the sound set is intended to be split into left and right channels, without this, the left channel sound will be centered when the pan is turned to the right.

Default Velocity to LPF

SoundFont v2.01 and v2.04 differ in the standard definition of the velocity to LPF cutoff frequency modulator.
In v2.01, jumps occur at velocities below 64 and above 64; in v2.04, the transition is smooth.
Some sound sets may have already addressed these behaviors. For those sound sets, the best option is to choose “None”.


Increase the sampling frequency to reduce aliasing noise. If this is increased above 1x, the load will increase.

GS Custom Controllers

Enables the controller assignment feature supported by GS. Enabling this will change the behavior of modulation wheels, etc.


Customizes the sound set.

View Regions

Display the parameters of the sound set.

Modifier screen

Four modifiers are available as default.


The sound set is left as is, nothing is customized.

Add Soft Pedal

Add a soft pedal function. The soft pedal reduces the volume by 10 dB and lowers the cutoff frequency by 300 cents.

Soft Pedal and Reverb Fix

Add a soft pedal function and set the reverb to its standard setting. It is recommended that you choose this for any sound set you add.

GeneralUser GS mod

This is a modifier for the attached sound set “GeneralUser GS v1.471”. It fixes some mulfunctions that occur in the original sound set.


You can edit the modifier by pressing Edit and selecting it. Editing requires knowledge of Sound Font.

SMF Playback screen

Tap the rightmost note in the menu to go to the SMF playback screen. You can play so-called MIDI files.

The part boxes, from top left, are.
Part, Mute, Patch, Volume, Expression, Pan, Pitch Bend, Modulation Wheel, Portamento, Soft Pedal, Sostenuto Pedal, and Sustain Pedal.
Press and hold Mute to solo.


From left to right,
Song name, play, pause, stop, repeat, elapsed time, position slider, and song duration.

Tap the song name to select the song to play. If you go back through the hierarchy from the top left button, you can select all files visible in the Files.app.
You can seek by moving the position slider, but SysEx is not processed when doing so. If preview when seeking is enabled, it sounds if seek is performed during playback.

Preset screen


Saves the current state of the panels. What is saved here are the patch name and parameter values; the sound set status is not saved.


The file selection mode enters. You can move or delete files.

Folder icon

Create a new folder.

Reset screen

Reset Sampei

Initialize Sampei.

All Sound Off

If sound is played, mute it.

All Notes Off

If there are note-ons, note off all of them.

Reset Controllers

Reset CC#1, #11, #64, #65, #66, #67, #84, #98, #99, #100, #101, Aftertouch, and Pitch bend.

GS Reset/GM/GM2/XG

Reset to the respective mode of multitimbral.
Each part has separate channels, with part 10 being the drums.
Swipe left or right to reveal GM, GM2, and XG.

Enable MPE

Enables MIDI Polyphonic Expression. Only receive is possible.
Please read “About the MPE function”.

Param screen

Master Volume

The overall volume.

Master Balance

The left-right balance of the sound.

Master Key Shift

The overall transposed key.

Master Tune

The overall tuning.

Part Tuning

Fine tuning can be done for each part. Press “Files” in the top left corner to save and load settings.

Miscellaneous Parameters

Pitch Offset

Shifts the pitch in Hz units.

Vel Sens Depth, Vel Sens Offset

The slope and offset of the velocity; if Depth is set to 0, all velocities will have the same strength.

Controller 1, 2

The controllers of GS/XG.

Reverb, Chorus

Sets each parameter of the reverb effector and chorus effector.

MIDI screen

MIDI Devices

Select the MIDI device to be connected.


Select whether to receive each signal. Receive the ones that are enabled.


When a MIDI signal comes in, the signal is converted internally according to this rule.
The default rule is set to convert CC #71-#78 to NRPN.

Editing Remap Table

Press “Files” in the top left corner to save and load settings.
In the item, “Detect MIDI Signals”, the next transmitted signal will be set.

Editing Program Map

You can assign the program/preset with program change. If “Change Preset” is enabled, the user preset will be loaded instead of changing a patch of one timbre upon receiving a program change.
Programs can be set for both normal and drum.


Sound Set Manager

Open Sound Set Manager screen.

Number of Panels

You can specify the number of panels in the panels screen.


Preferences for Soft keyboard.


The behavior when the soft keyboard is moved horizontally with a finger.
Glide: The next key sounds like a glissando.
Scroll: The key remains the same, but the keyboard scrolls.
Fixed: The key and the keyboard position remain the same.

Velocity Sens

Velocity is changed depending on the position of the keyboard touch.


Shifts the key on the keyboard by semitone steps.

Knob/Slider Sens

Smaller values require a larger finger movement to change the value.


Preferences for SMF Playback screen.

Simple Play View

Eliminate the parameter display and show only the keyboard display.

Tweakable Play View

If enabled, parameters can be manipulated.

Preview when Seeking

If seek is performed during playback, it sounds.

Playback Speed

The playback speed.

Media Info

Disables mixing with other apps and enables playback control in the system. Currently there is an issue and the playback/stop status may not be reflected correctly. Restarting the app is required to reflect the setting.

Loop Detection

Loop detection for MIDI files.

Key Shift Mode

Switches between key shift and coarse tune on the panels screen.

Non Real-time Tune

The notes already sounded are no longer affected by RPN1 and RPN2.


The number of voices to be sounded at the same time. Decreasing the value makes it more stable.


A method to enhance the sample. If “None” is selected, there is a lot of noise.

Buffer Size

Increasing this will stabilize the system, but will increase the delay.

Prevent Sleep

Prevents Sleep.

Run in the Background

The sound does not stop even when the app is in the background.

Auto Shutdown Timer

If Run in the Background is enabled, the sound stops at this time after the signal is lost.


Frame Skipping

Reducing this will result in smoother animation, but will increase the load.



Light: A light background theme.
Dark: A dark background theme.
Sys: Same as System settings.


The color of the appearance.

Change Icon

Change the App icon. The icon will be the current theme and color.



If you do not want to use the cloud, you can disable it here. You can then copy files from the cloud to local.
KQ Sampei uses iCloud only for presets, MIDI Remaps, Program Maps, and Tunings.

Mark sounds for backup

Include sound sets in iCloud/iTunes backups.
Disabling it will save backup space.

Save as AU Default

Save the current state as the initial state of Audio Unit.


Create a backup of KQ Sampei. If you delete a setting, you can restore it from the backup.
Once the backup is created, you will be taken to the file export screen. You can save the backup file by pressing “AirDrop”, “Save to File”, “Email”, etc.


Restore settings from a KQ Sampei backup. When the file selection screen appears, select the file you backed up.
After that, you can set the target to restore.

Re-create Jupiter.mid

Re-create Jupiter.mid in KQ Sampei folder on this iPhone/iPad.

About the MPE function

The MIDI Polyphonic Expression (MPE) function is experimental.
If you enable MPE, you cannot use multiple layers, and all layers will be the same sound.
The “KQ Sampei MPE” audio unit will start up with the MPE enabled.
MPE is turned off when you load a preset that has MPE turned off.