Home › Forums › Products › Stompboxes › H90 Quadravox Quantization Question
- This topic has 4 replies, 3 voices, and was last updated 5 months, 4 weeks ago by brock.
-
AuthorPosts
-
-
April 6, 2024 at 1:45 pm #180699fiddlercrabseasonParticipant
With Quadravox’s quantization param ‘off’, I’m still getting quantization of *some* – not all – pitch intervals, regardless of ‘key’ or ‘mode’.
example 1: A-C = off, D = 5th, Quant = off, Key = D, Mode = Major. All notes played will produce a P5th, *except* C#, which produces a tri-tone.
example 2: A-C = off, D = 5th, Key = D#, Mode = Major. Play note D. Toggling quantization on & off has no effect, ie tri-tones in both positions.
example 2: A-C = off, D = 5th, Quant = off. Play any note and move the key or mode to hear the FX interval slip in & out of quantization.
Does ‘off’ not really mean ‘off’, or is this a bug?
-
April 7, 2024 at 1:13 pm #180721fiddlercrabseasonParticipant
I spent some more time with Quadravox this morning (and a few web searches) to see if I could figure out how/what/where/etc. the Quantization param does/doesn’t apply. And I still don’t get it. With D/minor selected, I get:
OFF–m3-m3-m3-M3-M3…
note-Dn-D#-En-Fn-F#…
ON—m3-M2-m3-M3-m3…– when off, why the shifts between m3/M3? and why *those* shifts?
– when on, why a M2nd? as opposed to a 3rd?Can someone on team Eventide give me Quadravox 101 tutorial regarding what to expect from the Quant param? (Maybe there’s a ‘Quadravox conversion chart’ laying around somewhere?) I’m just trying to anticipate what it can/can’t/will/won’t do.
Thanks in advance.
(ps – FTR, I’m not looking for a scale/mode/interval/etc. refresher. I’m on solid ground there.)
-
April 8, 2024 at 6:23 pm #180753
When Quantization is on, all notes will be quantized to a note within the chosen key/scale. With Quantization off, you can still play notes that will be shifted outside of the chosen key/scale.
Example 1: In D Major, C# is part of the scale (the 7th degree or M7) and gives you a tritone because a perfect fifth of C# would be G#, and that is not in the D Major scale. If you play notes that are within the chosen key/scale, they will be harmonized to notes that are within the chosen key/scale. When you play notes that are not in the chosen key/scale, you’ll always get a perfect 5th, even if it is not in the scale.
Example 2: Same as above, you’re playing the 7th degree (M7) of the major scale. The perfect 5th would not be a note within D# major. Quant on/off will not affect this. The perfect 5th (A) would be the tritone of root note D# and would sound “dissonant”.
It sounds like in your other examples you are harmonizing with 3rds, and these harmonies are switching between major/minor thirds to fit with what notes are in the D Minor scale. When Quant is on and you play a D# (not in the D Minor scale) it quantizes this note to the next scale degree, which is the 2nd (E).
You can use other pitch-shifters that do not have key/scale parameters (Polyphony, Harmodulator) if always want a specific interval, for example, if you always want a fixed m3 harmony.
Let me know if that helps.
-
April 8, 2024 at 8:47 pm #180758fiddlercrabseasonParticipant
Thanks a million for the illuminating response. It all makes sense now. The big take-aways for me are:
1) ‘quantization off’ does not/will not result in ‘chromatic harmonizing’. ie, the key/scales are ‘always on’. And
2) this…
… quantizes this note to the next scale degree…
(emphasis mine)
…which explains why the algo will sometimes produce 2nds when ‘pitch=3rd’ is selected, 3rds when ‘pitch=4th’ is selected, etc.
I’ll make another pitch here for user editable and/or custom scale options in H90 (and/or RNBO in H90)… Eventide’s top shelf pitch tracking combined with the ability to drop a Scala file onto a ‘scale’ param knob in Control (or via gen~) and let the non-western & microtonal fun begin. 🙂
Thanks again.
-
April 9, 2024 at 8:48 am #180768brockParticipant
… 1) ‘quantization off’ does not/will not result in ‘chromatic harmonizing’. ie, the key/scales are ‘always on’ …
And there are some advantages to be mined there. And one big reason I always check tuning accuracy with the on-board tuner (whether or not that applies).
And 2) this…
… quantizes this note to the next scale degree…
Also of (my) interest: where the transition threshold lies. The Snap point between allowable pitch deviation / vibrato and the next scale degree. I imagine usually somewhere around a quarter-tone, with the Whole Tone scale being one obvious exception. The transition rate appears to remain the same (hard Autotune).
… Eventide’s top shelf pitch tracking combined with the ability to drop a Scala file onto a ‘scale’ param knob in Control (or via gen~) and let the non-western & microtonal fun begin …
I’ll always jump on this bandwagon. Granted, easier to implement in synthesizers. So much you can do, even using ‘normal’ intervals. Sell it as ‘per-note detuning’, and the historical accuracy & exotica sneak in through the back door.
-
-
AuthorPosts
- You must be logged in to reply to this topic.