KQ Voice Plugins

KQ Voice Plugins

KQ Voice Plugins Icon
KQ Voice Plugins
Ryouta Kira
Download on the App Store

This is a set of Audio Units including Loopback, Vocoder, Pitch Shifter, and Noise Suppression. A host application that can handle Audio Units is required for use.


Connects to each other and transfers audio between host applications. MIDI signals can also be transferred.


This effect processes the sound of a synthesizer or other carrier with the input sound (modulator) and outputs it. It creates a so-called robot voice by inputting a voice or other sound.
By default, Saw (sawtooth wave) is specified as the carrier, but it can also be input from a sidechain or Vocoder Input Audio Unit.

Pitch Shifter:

An effect that changes the pitch of the sound.

Noise Suppression:

A noise removal filter using RNNoise. This machine learning filter is optimized for voice.

Note that these screenshots are simulated.

KQ Voice Plugins Icon
KQ Voice Plugins
Ryouta Kira
Download on the App Store

Version History

Date format: YYYY/MM/DD (JST)

v1.2.2 (2023/07/04)

Small changes. (it might improve stability of Loopback when the sample rates differ).

v1.2.1 (2023/07/03)

Fixed an issue that Loopback MIDI went wrong with multiple instances.

v1.2 (2023/07/02)

Added Loopback Mixer.
Increased the number of ports of Loopback. (4×16)
Improved stability of Loopback.
You can select MIDI channels in Loopback MIDI.
You can use the multople Loopback MIDI with same port. (Max:16)
Added some options.
Other fixes.

v1.1 (2023/06/28)

Added a MIDI Effect Audio Unit of Loopback.

v1.0.6 (2023/06/27)

Improved stability of Loopback.

v1.0.5 (2023/06/27)

Improved stability of Loopback.

v1.0.3 (2023/06/27)

Fixed an issue of the sample rate converting.

v1.0.2 (2023/06/26)

Added a Sample Rate Converter.
Added options for Loopback latency.

v1.0.1 (2023/06/24)

Fixed an issue that caused “Too Many Output” error.

v1.0 (2023/06/23)

Initial release.