My private teacher for clarinet introduced me to what she called "chunking" (not as a music memorizing tool) where you take a piece of music that has straight sixteenths for many measures, for example, and you change it from sixteenths to having the first note elongated so that it is a quarter note, then three sixteenth. Another example is turning it so that the rhythm was syncopated. She said that this would help me tongue and articulate the piece faster (I understand the psychological aspects of it but can it help me articulate faster?). Has anyone heard of this method? Does it actually work?
I don´t now much about clarinet but what you mention is pretty much standard in all fields of training. From my personal experience with learning instruments my teacher for violin asked me to do so and my teacher for drumset asks me to do so. My daughters teacher for cello also uses this type of exercise from time to time.
Regarding the clarinet: E.g. Keith Stein in "The Art of Clarinet Playing" says that training with the "Schottische Figure" (that is dotted 1/8 with 1/16) trains uniformity of note length and maintenance of breath and embouchure.
My 2 cents: I don´t see that the type of instrument plays a crucial role for this type of exercise. Of course, when applied on piano you won´t train maintenance of breath but the basic principle is the same:
In cognitive sciences these approaches are named, to my knowledge, de-accentuation or desynchronisation. And they deal with two effects: To perform a periodic task you will have to continuously manage phase correction and period correction. Phase corrections is not cognitively controlled, while period correction is.
With de-accentuation you remove the focus on period correction and you can use the limited resources of the brain to focus on other aspects.
As a professional trainer I see two other advantages: 1. breaking routine can support interest. 2. breaking routine can tackle frustrations and frictions coming from repeating a routine too often without rewarding progress.
Yep, this is an excellent exercise. My teacher called it "galumphing", but same idea.
I recommend not only two-note chunks, short-long and long-short, but also three-note chunks.
As a companion exercise, especially for runs, play the first 3 or 4 notes until they are solid. Then play the first 4 or 5, then 6, etc. (rather like "suicide drills" for athletes, but less tiring). Then do the same thing, but starting with the last 4 notes, then the last 5 notes, and so on.
I'm also used to this kind of exercise. To get a run of 8th easily running, one first assumes the odd notes have a dot and the even are shortened accordingly, and then vice versa.
If you achieve the even/odd smoothly with a bit more more time for the other transitions (to think, to adjust the fingers), chances for success are noticably better. After having boosted the other transitions as well, the original sequence is no longer appearing problematic.
I guess, this is as much a psychological process (the certainty, that one even is able to complete this faster) as the physical challenge to train the fingers to move faster (even in a restricted scenario) than required for this specific run.