KQ Sampei

This app is a sample synthesizer which sound sets can be changed. It is multi-timbral.
Available Sound Set Formats: Sound Font(sf2), Compressed Sound Font(sf3), Downloadable Sound(DLS)
Manual is here.

KQ Sampei Icon
KQ Sampei
Ryouta Kira
Download on the App Store

Supports a part of common MIDI messages (GM, GS, XG, MPE).
Includes a MIDI File Player. It supports Standard MIDI Files and RIFF MIDI Files. It also supports multiple ports and loops.

You can customize sound sets with “Modifiers”.
In default, a modifier which adds soft pedal function, and GS Custom Controller mod are being applied. You can select “Original” and disable GS Custom Controller if you want.
Supports Audio Unit v3 and Inter-App Audio. You can use this synth as a plugin for another app such as GarageBand, AUM, Cubasis, etc…

Unlimited number of sound sets to be loaded. You can use them as long as the device memory allows.
The actual memory limits seems to be around the half of the hardware RAM.
You may be able to load sounds over the memory size if you turn on “Load On Demand”.

You can play this app with external MIDI devices and Virtual MIDI apps.

Includes a sound set, “GeneralUser GS” by S. Christian Collins. I prepared a modifier for this set.
This app developer does not collect any user information other than what is collected by iOS/iPadOS.

URL Scheme: kqsampei://

KQ Sampei Icon
KQ Sampei
Ryouta Kira
Download on the App Store

Bug information

  • Version 1.0 to 1.0.7

    • There were an issue with CC#74 processing in MPE mode.
  • Version 1.0 to 1.0.4

    • Portamento doesn’t work.

The following photos are under development.

KQ Sampei Icon
KQ Sampei
Ryouta Kira
Download on the App Store

Version History

Date format: YYYY-MM-DD (JST-9)

Version 1.0.14

Added Slow LPF function.
Now Expression and Modulation Wheel are saved.
Other fixes.

Released on 2022-11-28.

Version 1.0.13

Fixed a bug that caused unnecessary sample rate conversion.
Fixed a bug that some SMF was not played correctly.

Released on 2022-10-23.

Version 1.0.12

Added links to my web site.
You can view the raw value in region view.
Other small fixes.

Released on 2022-10-18.

Version 1.0.11

Fixed a rare crash.

Released on 2022-10-08.

Version 1.0.10

Fixed a bug that occurred when the playback speed was not 1.0.
Other small fixes.

Released on 2022-10-03.

Version 1.0.9

Fixed some bugs.
Released on 2022-08-21.

Version 1.0.8

It was fixed that CC#74 went wrong in MPE mode.
Added Soft Pedal and Reverb Fix modifier.
Released on 2022-08-20.

Version 1.0.7

Temporary files are now deleted.
Added a URL Scheme.
Fixed a crash bug.
Released on 2022-08-19.

Version 1.0.6

It was fixed that the app hanged up in MPE mode.
It was fixed that Number of Panels in AU wasn’t applied on below iOS/iPadOS 15.
Other fixes.
Released on 2022-06-15.

Version 1.0.5

It was fixed that portamento didn’t work.
It was fixed that you were not able to import files from some third-party file provider extensions.
Released on 2022-06-12.

Version 1.0.4

You can change the Number of Panels in Audio Unit.
Added Non Real-time Tune toggle. This allows you to change the pitch of the note to be played without changing the pitch of the note already played.
It was fixed that mute status were cleared when receiving reset SysEx.
Other fixes.
Released on 2022-06-09.

Version 1.0.3

Fixed a bug about selecting source of “Remove mod” in a modifier function.
Other fixes.
Released on 2022-06-07.

Version 1.0.2

Added a deeper Load-on-demand level.
Fixed some bugs.
Released on 2022-06-05.

Version 1.0.1

Bug-fix: Audio Unit didn’t work in a specific condition when state was loaded.
New features: Saving State as AU Default.
Other small fixes.
Released on 2022-06-03.

Version 1.0

Initial release.
Released on 2022-06-02.