ABSYNTH 5 Reference Manual – 15310.7.2 Octave LinkWhen you activate the option Octave Link by clicking on the Octave Link button, ABSYNTH5 transmits the frequency intervals determined for an octave to the other octaves within thescope of the tone. For this reason, you do not need to tune every note individually for all ofthe octaves. When you have turned on Octave Link and newly tuned a note, the note changesby the same amount simultaneously in all of the octaves such that the intervals in all of theoctaves correspond exactly to those in the basis octave. If you want to tune all of the notesindividually, turn Octave Link off.In Keys per Octave control set the number of MIDI buttons to produce an octave from whichyou can recognize that an octave in ABSYNTH 5 does not necessarily have to consist of eightwhole tones or twelve half tone steps. If you turn on Octave Link, set the value in (for example)Keys per Octave control at 11, and then change the pitch of a particular note, then the 11thnote above and below the selected button will be tuned correspondingly.As an example, take a typical tuning with 12 half tone steps per octave. In this example, Keysper Octave control as well as Octave Interval control both have the value 12. For stretchedtunings (e.g. the tempered tuning of a piano) you should increase Octave Interval slightly,e.g. to 12.01.To automatically produce quartertones, set the Keys per Octave control to 1 and OctaveInterval control to 0.5. To produce eighth tones, put the Keys per Octave control at 1 andOctave Interval control at 0.25.When defining an octave, the Octave Link and the controls only influence the operation ofthe other parameters. You will not hear any changes until you change the pitch of a note inNote control, Frequency control or Ratio control.