voicing and consonsants Flashcards
the larynx
● made of two large cartilages
● these are hollow and attached to the top of the trachea
● inside are the vocal folds
● at the front the vocal folds are joined together and fixed to the inside of the thyroid cartilage
● at the back they are attached to the arytenoid cartilages which are attached to the cricoid
cartilage
● glottos refers to the opening between the vocal folds
○ if the vocal fold are apart → glottis is open
○ if the vocal folds are pressed together → glottis is closed
wide apart
for normal breathing and voiceless consonants like (p,f,s)
narrow glottis
when air is pressed through narrow glottis → h
vocal fold vibration
when edges of the vocal folds are (nearly) touching each other and air passes through → vibration
opening and closing movement (air pushes the vocal fold apart so that little air escapes → air flows quickly past the edge of the vocal folds → folds are brought together again) repeats rapidly
tightly closed
air cannot pass → glottal stop
respiration and voicing
egressive pulmonic airstream
= air is pushed out of the lungs
voicing/phonation
= sound from vibration of the vocal folds
variation in intensity of air pressure
high intensity for shouting, low intensity for speaking quietly
variation in frequency of air pressure
rapid vibrations for high frequency, fewer vibrations for lower frequency
variation in quality of air pressure
harsh, breathy, murmured, creaky voice qualities
waveforms
= measures and visualizes air pressure changes
● voiced sounds → periodic waveforms,
○ a pattern that reoccurs regularly as long as the sound is produced
● voiceless sounds → aperiodic waveforms,
○ irregular vibration
frequency
● frequency of air pressure changes, the fundamental frequency (F0), is perceived as pitch: 1 Hertz (Hz) = one cycle per second.
● The normal speaking voice of an adult female voice has 230 Hz. A male voice has an average F0 of 120 Hz.
formants
- additional frequencies
-> changing F0 varies pitch, but not the quality of a vowel
-> changing formants varies the quality of a vowel, but not pitch.