Synth-DIY Yahoo! Groups Archives

Linear tuning shift using the tracking generator or otherwise?

2013-04-21 by mattvrazo

Hi all,

Anyone have any suggestions how to obtain linear tracking of one oscillator to maintain a steady beating frequency across all octaves? 

I.e., some way to add a set voltage to osc1  pitch so that it stays X Hz above oscillator 2 regardless of pitch? Was introduced to this idea by new synths such as the subphatty, and also through the "ultrasaw" concept on the Aurturia minibrute. 

I tried this with the tracking generator by scaling the pitch frequency across the keyboard, but it only kind of worked (and not consistently). Maybe I should have tried using the same value across the tracking generator? 

It seems like it should be possible using some parameter, or combination thereof. 

Matt

Re: [xpantastic] Linear tuning shift using the tracking generator or otherwise?

2013-04-21 by PeWe

Moog Subfatty and Minitaur are V/Hz OSCs which allows steady OSC frequency beating across the OSC\ufffds range.

You can come somewhat close using the Xpander\ufffds tracking generator, but you have only 1 value per octave of a 61-key span to adjust.
Everything outside a keyspan of 61 keys isn\ufffdt covered by the tracking generators anyway.
To make it work constant, you\ufffdd need to adjust the OSCs pitch tracking per key, not octave.

Am 21.04.2013 02:11, schrieb mattvrazo:

Show quoted textHide quoted text

\ufffd

Hi all,

Anyone have any suggestions how to obtain linear tracking of one oscillator to maintain a steady beating frequency across all octaves?

I.e., some way to add a set voltage to osc1 pitch so that it stays X Hz above oscillator 2 regardless of pitch? Was introduced to this idea by new synths such as the subphatty, and also through the "ultrasaw" concept on the Aurturia minibrute.

I tried this with the tracking generator by scaling the pitch frequency across the keyboard, but it only kind of worked (and not consistently). Maybe I should have tried using the same value across the tracking generator?

It seems like it should be possible using some parameter, or combination thereof.

Matt

Xpantastic!

Linear tuning shift using the tracking generator or otherwise?

Linear tuning shift using the tracking generator or otherwise?

Re: [xpantastic] Linear tuning shift using the tracking generator or otherwise?

Move to quarantaine