Relationships Flashcards
According to SFT what happens when there is a local constriction near a movement antinode (opening of the VT)
lowers formant frequency (ANLO)
What happens when there is a local constriction near a movement node (near glottis)
increases formant frequency (NORA)
According to the helmoltz model what happens when you increase the length of the opening port?
resonating frequency decreases
According to the helmoltz model what happens when you increase the area
resonating frequency increases
According to the helmoltz model what happens when you increase the volume of the cavity
resonating frequency will decrease
F1 corresponds to what?
degree of constriction
F2 corresponds to what?
place of constriction
A 10^a increase in sound intensity corresponds to a _______ dB increase
10 * a
A 10a increase in sound pressure corresponds to a ________
dB increase in SPL
20 * a
A more posterior constriction in the tongue for fricatives =
a longer VT = stronger dominance of energy in lower frequency regions
In terms of wall frequency, as the constriction moves back
there is more involvement by the lower teeth and so there s more wake turbulence
Narrow band filter
= large window
= good frequency resolution
= poor temporal resolution
Wide band filter
= small window
= poor frequency resolution
= good temporal resolution
What can we see in a wide band spectrogram
- vertical striations reflecting glottal pulses
- formants reflected in dark bands
What can we see in a narrow band spectrogram?
- horizontal striations reflection harmonics
- formants visible in dark bands
