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Lirah-1

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A drone synth for the Korg NTS-1 mkii inspired by the Soma Laboratory Lyra 8

Lirah-1 is custom firmware for the Korg Nu:Tekt NTS-1 digital kit mkII, by @DanielMajid. Open source under MIT, latest release v1.0.0 (May 2026), 3 stars on GitHub.

forKorg Nu:Tekt NTS-1 digital kit mkII·by@DanielMajid

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MIT· DanielMajid/Lirah-1·downloads come from the creator’s GitHub releases

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  1. v1.0.0Lirah-1 v1.0.0: Lyra-8 voice for the Korg NTS-1 MkiiLatest1 file

    Lirah-1 v1.0.0

    Lirah-1 is a Lyra-8 inspired custom oscillator for Korg NTS-1 mkII.

    Ported to the NTS-1 mkii by Daniel Majid Mirzakhani

    Based on a NTS-1 mki project by jamesdcheetham (https://github.com/jamesdcheetham/Lyre-1)

    Highlights

    • Sine-core voice with FM, wave folding, and feedback.
    • Hyper LFO driven by two internal sine LFO lanes "AND" gated interaction to raise pitch up to 1 octave.
    • Assignable modulation source (LFO33) with target select and dedicated rate control.
    • +1 octave tuning for both modulator pitch (FM TUNE) and carrier pitch (PITCH).

    Control Surface

    • Knob A (FM DEPTH): FM amount from modulator to carrier.
    • Knob B (HYPER LFO): Hyper LFO pitch-jump depth up to 1 octave.
    • LFO1 RATE, LFO2 RATE: Hyper LFO lane rates.
    • FOLD: Wave folding amount.
    • FM TUNE: Modulator relative tuning.
    • PITCH: Carrier relative tuning.
    • FEEDBACK: Carrier-path feedback amount.
    • LFO3 TARGET: Assigns modulation destination.
    • LFO3 RATE: Slow-focused scaling (0-50% = 0-1 Hz, 50-100% = 1-25 Hz).

    LFO3 Target Map

    • OFF
    • FMDEPTH
    • HYPER LFO DEPTH
    • HYPER LFO 1
    • HYPER LFO 2
    • FOLD
    • FM TUNE
    • CARRIER TUNE
    • FEEDBACK

    Build and Installation

    1. Clone with submodules.
    2. Install ARM GCC toolchain from logue-sdk/tools/gcc/.
    3. Build with make install.
    4. Load the generated .nts1mkiiunit in Korg Kontrol Editor and sync.