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graphics in synthesis window

spigot@...
 

hiya, i've started playing with the articulatory synthesis
part of praat, and i'm wondering -- when i'm actually
synthesizing a soundfile, there's a window that displays
a progress bar, and some graphics -- what do those
graphics mean? i can see vibrating vocal cords, when
i do things right -- but there is a strange square-like shape
above that, and to the right, mysterious curves...

i'm really enjoying praat, and i'm sure i'll have more questions.
i'm overwhelmed with the complexity. :) paul

Paul Boersma <paul.boersma@...>
 

"spigot" wrote:

hiya, i've started playing with the articulatory synthesis
part of praat, and i'm wondering -- when i'm actually
synthesizing a soundfile, there's a window that displays
a progress bar, and some graphics -- what do those
graphics mean? i can see vibrating vocal cords, when
i do things right -- but there is a strange square-like shape
above that, and to the right, mysterious curves...
You are already quite far in getting the synthesizer to work at all,
because the vocal cord vibration is a passive vibration,
which means you did a good job of bringing together the cords
by the right amount of Interarytenoid activity, applying
the right transglottal pressure with the Lungs activity,
and keeping either the oral or the nasal pathway open...

The square-like shape is the lungs; you'll see them slowly
contracting as the utterance proceeds. The curves to the right
are linearized representations of the pharyngeal, oral,
and nasal cavities. You will see them moving if you play
around with any of the supralaryngeal muscles.
--

Paul Boersma
Institute of Phonetic Sciences, University of Amsterdam
Herengracht 338, 1016CG Amsterdam, The Netherlands
http://www.fon.hum.uva.nl/paul/