NONLINEAR LABS C15 Manual
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The Synth Engine

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Summary of Contents for NONLINEAR LABS C15

  • Page 1 The Synth Engine...
  • Page 2: Table Of Contents

    Contents C15 Synth Engine – Overview & Detailed Design Concepts The Components in Detail Oscillator A, B Shaper A,B Envelope A, B Envelope C Comb Filter State Variabe Filter Output Mixer Output Mixer Flanger Cabinet Gap Filter Echo Revrb Macro Control...
  • Page 4: Design Concepts

    Design Concepts The Components in Detail Oscillator A, B The design goal for Phase 22 was to take advantage of digital synthesis algo- rithms in order to build an expressively playable instrument that has a strong individual character At the same time the set of parameters should be small enough to be easily accessible The core structure is a phase modulation synth that is based on two sine oscil- lators and two sine shapers only Their signals can be passed through a comb...
  • Page 5: Shaper A,B

    Shaper A,B Oscillator signal without self modulation and different amounts of fluctuation: Wave Form Audio Spectrum The signal of each oscillator is processed by a wave shaper The shaping curve is a sine function with adjustable foldback and asymmetry The mix amounts of the shaper signal can be adjusted individually for each phase modulation branch and for the output The Shaper block also contains mixing points for the feedback signal and the...
  • Page 6 The influence of the Drive parameter of the Shaper: The influence of the Fold parameter of the Shaper: Output Input Drive: 0 .0 dB Fold: 100 % Asymetry: 0 % Output Output Input Input Drive: 3 .0 dB Drive: 12 .0 dB Fold: 100 % Fold:...
  • Page 7: Envelope A, B

    Envelope A, B The influence of the Asymetry parameter of the Shaper: Output Input Drive: 3.4 dB Fold: 50 % Asymetry: 0 % Output Input Drive: 3.4 dB Fold: 50 % These two ADBDSR envelopes are the control sources for: Asymetry: 20 % •...
  • Page 8 Envelope with Decay 1 as Hold Time: Envelope Amount: Level PM Self Attack Decay 1 Decay 2 Release Peak/ Control Position Breakpoint Level Env A Modulated Signal Crossfade Env A Multiplier Percussive Envelope : Envelope with multiplying effect: Level Decay 1 Decay 2 Release Attack...
  • Page 9: Envelope C

    Envelope C Comb Filter The third ADBDSR envelope has bipolar Breakpoint and Sustain levels It can The Comb Filter contains: modulate: • a precisely tunable delay (Pitch) • the pitches and fluctuations of Oscillator A and B • a control for the Decay time of the impulse response •...
  • Page 10: State Variabe Filter

    State Variabe Filter Basic frequency responses of the Comb Filter. Setting the Decay to negative values has similar results like the inverted mix. Non-inverted Mix: Magnitude (dB) 0 dB The State Variable Filter has a variable 4-pole structure with: Frequency –...
  • Page 11 Frequency responses of the State Variable Filter with Parallel set to 0 %: Frequency responses of the State Variable Filter with Parallel set to 100 %: Parallel = 0 %, Spread > 0 st Parallel = 0 %, Spread = 0 st Parallel = 0 %, Spread >...
  • Page 12: Output Mixer

    Output Mixer Output Mixer The Output Mixer creates a stereo sum of the signals from Oscillator/Shaper A This mixer combines the following signals for the feedback bus: the outputs of and B, the Comb Filter and the State Variable Filter It includes a sine shaper for the Comb Filter and the State Variable Filter and the output of the Effects chain, the sum signal of each voice with a separately adjustable amount of Reverb It includes a sine shaper for the...
  • Page 14: Cabinet

    Cabinet Gap Filter A stereo distortion unit (sine shaper) with pre and post filtering that can sound A 4-pole lowpass and a 4-pole highpass in a parallel or serial structure, creating similar to a guitar amp driving a speaker a flexible band-rejection or band-pass filter The offset between the center frequencies of the left and the right channel can be controlled Signal flow of the Cabinet: Signal flow of the Gap Filter:...
  • Page 15: Echo

    Echo Some typical frequency responses: Parallel/Band Reject (Mix > 0) Serial/Band Pass (Mix < 0) Balance = 0, Mix = 1, Reson = var. Balance = 0, Mix = –1, Reson = var. Gain Gain 0 dB 0 dB A stereo delay effect with adjustable cross-feedback Frequency Frequency Signal flow of the Echo.
  • Page 16: Revrb

    Revrb Macro Control Six Macro Controls (A, B, C, D, E, F) are available as modulation sources 106 parameters can be assigned as modulation targets with individual amounts For each Macro Control a Smoothing time can be set A flexible simulation of rooms and halls The Size can be varied without Harware Sources and Amounts artefacts Signal flow of the Reverb.
  • Page 17: Voices

    Voices The modulation stages (with example mapping): External Devices Hardware Sources Macro Controls Target Parameters Pedal 1 Pedal 2 Pedal 3 The parameters in this group control the monophonic mode and the use of the Pedal 4 voices for Unison Bender Part and Master A ertouch...
  • Page 18: Scale

    Scale The Scale group offers twelve Offsets to tune the keys of an octave The Base parameter can be used to shift the base key of the scale Equal-temperament scale and the available tuning range: A scale where four keys have been micro-tuned: +25ct max.
  • Page 19: About Fm And Chaos

    Instruments’ Kontour in 2014 With the learnings from the Kontour project they could be programmed to respond very expressively to key velocity we have improved Phase 22 in many aspects, and as part of the C15 it is still evolving The algorithms of the first FM synths already contained a feedback loop Later, in NI’s FM7 the algorithms were extended to a matrix where every operator’s...
  • Page 20: The C15 Synth Engine Compared To Kontour

    The C15 Synth Engine compared to Kontour • Higher resolution for velocity, hardware controls and parameters • Adjustable Stereo spreading of Unison voices • Six instead of four Macro Controls • The Flanger is now in front of the Cabinet •...
  • Page 21 NONLINEAR LABS GmbH Helmholtzstraße 2-9 E 10587 Berlin Germany www.nonlinear-labs.de info@nonlinear-labs.de C15 Synth Enigine Document Version: 1.7 Date: June 29, 2022 Author: Stephan Schmitt © NONLINEAR LABS GmbH, 2022, All rights reserved.

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