Additive Synthesis - Comparing apples to oranges?

Thank you for this extensive post :cherry_blossom: Lets see if they will play Big Time in the clip =)

The core additive functionality for NYSTHI PHASOR is not too complicated.

  • OUT is the main (audio) output
  • ODD is the output for the ODD harmonics only
  • EVEN is the output for the EVEN harmonics only
  • To control overall pitch: connect some 1V/Oct source to CV. E.g. a tuner or sequencer/quantizer.
  • To control the (relative) amplitudes of the harmonics: connect some static CV source(s) or modulation source(s) (e.g. envelope generators) to any of the MAGNITUDE CV inputs and turn the MAGNITUDE CV ATTEN knobs up.
  • Similarly you can control the PHASE of each harmonic.
  • Similarly you can detune each harmonic via FREQUENCY TRIM
  • TILT (angled attenuation/amplification) and OFFSET (overall amplitude/offset) both affect the whole spectrum.

Not Additive, but a fun addition:

  • Exponential FM is basically another V/Oct input when set to 1, but can also be used for audiorate modulation.
  • Linear FM can be used for audiorate linear frequency modulation to emulate Yamaha DX7 style Frequency Modulation (actually Phase Modulation).
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I am looking forward to try it. Specially the control of relative amplitude is very useful I have understood from playing with my alien drone tonigth.

  • TILT (angled attenuation/amplification) and OFFSET (overall amplitude/offset) both affect the whole spectrum. :grinning:

I am reading about the phase of the harmonics

Phase understood.

The Phasor is going to give so much control when i want to envelope the sound, with the drone now it sounds very cool but its a drone so it does not have a master envelope and phase.

BTW, spectrum of some basic shapes:

  • Sine: well…a single sine at any amplitude above 0
  • Triangle: all ODD harmonics at amplitude 1/rank^2 (squared), so 1=1, 2=0, 3=1/9 etc.
  • Square: same but amplitude 1/rank, so 1=1, 2=0, 3=1/3
  • Saw: same but ALL harmonics, so 1=1, 2=1/2, 3=1/3 etc.

Handy to keep in mind when trying to create/modulate some spectrum using various synthesis techniques. E.g. when summing (mixing), subtracting (summing with inverted phase) or multiplying amplitude (AM) or frequency (FM) or phase (PM). Both AM and linear FM/PM result in sum and difference frequencies for all frequencies in the spectrum of both carrier and modulator. For linear FM: The more the amplitude of the modulation source, the more sidebands are created to the left and right of the carrier where difference frequencies that would go below 0 Hz are reflected back into the spectrum at inverse phase.

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processing

I assume you mean: control over overall amplitude? Just feed the OUTPUT into a VCA and control the amplitude via the VCA.

I wouldn’t bother with phase too much at this stage…

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no actually I meant, that now i have 8 envelopes in shapemaster for each harmonic that runs independently (polyrythmically =) With Nysthi Phasor the envelopes can be locked to each other (what i meant with phase) so when i dial in a sound (or envelope timing) it will be regenerated again and again.

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For additive Drones, connect a random modulation source like Vult Caudal to control the (relative) amplitudes control. Maybe not modulate the root (generally the first harmonic) too much to keep tonality. Add Delay and Reverb to taste.

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:alien_monster: