Dear Anja,
Quote from: anjaq on December 12, 2013, 08:03:13 AM
(this time she said we went from a "g" up by 3 octaves almost to a higher c - I am not sure if thats really right, I think it was from a G up to a G 3 octaves higher spanning 100 Hz to 800 Hz) - which is in a way cool - my voice seems to have more room towards the top than I would have guessed.
That range is typical. If you're a bass, you should bottom out around D (73.4 Hz). Taking the G above that (98 Hz), your (male) chest voice (the lines between chest and head voice blur if you're using female resonance) should take you up around 2 octaves from there to g' (392 Hz), which in male resonance will only be available as a shout. Switching to head voice gives you the remaining octave up to g'' (784 Hz) or a bit higher. However, the top octave is excruciatingly hard to control musically. It blends in quite easily while speaking with female resonance, but singing in this range is a tough job.
Quote from: anjaq on December 12, 2013, 08:03:13 AM
So she again mentioned the option of having VFS which would basically close that gap by suturing it. What she was worried about was that with such a suture there would always be a strain on the vocal chords and the new commissure, even when just breathing as when the vocal chords just open to let air through, there would still be a pull on the chords. Has anyone asked at Yesons about this or did they say anthing on this?
When the vocal cords are approximated for phonation, there is hardly any additional strain, since, when running in parallel, the distance covered by the vocal folds, from the former commissure to the posterior end at the arytenoid cartilages, is precisely the same. The only thing that changes is the suture in between, creating the new commissure.
When the folds open up for breathing, things are different. Then the folds have to cover a greater distance due to the new commissure. But as the arytenoid cartilages are not designed to tense the vocal folds in their open state, their elasticity alone will determine how far they will open up. Which just means they'll open up a little bit less, which shouldn't cause a problem for breathing, though. Despite the huge influence of the diameter of an opening on the amount of viscous fluid that can pass through in a given timespan (cf. Hagen-Poiseuille's law, one of the few occurences of a 4th power proportionality), I hardly believe that the opening of the vocal folds is the narrowest part of the respiratory tract and thus the limiting factor for viscous flow. Or who has ever heard of natal women choking because of their naturally smaller larynx?
Bottom line: when the folds are apart and have a Y shape post-surgery, they're relaxed. When you tense them for singing or speaking at elevated pitch, they're approximated and in parallel, so there's no transversal component to the pull, and thus tearing up the Y juncture should be impossible. As far as physiological considerations go, the surgery should be safe.
Quote from: anjaq on December 12, 2013, 08:03:13 AM
I need to talk to that friend of mine who did that kind of surgery 10 years ago but hers was not that great to begin with, so it may not be a good example.
Was she a patient of Dr. Gross's?
Regards,
Amy