Term
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Definition
| Fundamental frequency increase comes from stretching/stretching action and tensing the vocal folds using the cricothyroid and thyrovocalis muscle. |
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Term
| Subglottal Pressure & Fundamental Frequency |
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Definition
- Increasing pitch requires increasing the tension of the system, thereby increasing the glottal resistance to airflow.
- If airflow is to remain constant through the glottis, pressure must increase.
- The increases in subglottal pressure are a response to the increased tension required for frequency change rather than its cause.
- Subglottal pressure does increase, but by itself has little effect on frequency change.
- Increased subglottal pressure is a response to increased vocal fold tension.
- Increasing the length of the vocal folds will increase vocal fold tension as well as decrease the mass per unit area. This will increase the fundamental frequency.
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Term
| How to produce sustained phonation? |
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Definition
- Requires maintenance of a laryngeal posture through tonic (sustained) contraction of musculature.
- The VF are held in place during sustained phonation, and the vibration of the VF is NOT the product of repeated adduction and abduction of the VF.
- During phonation the VF begin vibrating as the turbulence increases, and this vibration is sustained as long as the folds are approximated and there is sufficient subglottal pressure.
- VF need not be touching to vibrate.
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Term
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Definition
- Medial compression is increased to produce an increase in vocal intensity of phonation, and this is performed largely through the muscles of adduction.
- Increased adductory force requires greater subglottal pressure to produce phonation, and this forces the vocal fold to remain in the closed portion of the phonatory cycle for a longer time.
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Term
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Definition
- In pressed phonation, medial compression is greatly increased.
- The product of pressed phonation is an increase in the stidency or harsh quaility of the voice, as well as an increase in abuse to the voice.
- Greater medial compression is translated as stronger, louder phonation.
- This forceful adduction often results in damage to the VF tissue.
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Term
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Definition
- If the VF are inadequately approximated, so the the vibrating margins permit excessive airflow between them when in the closed phase, you will hear air escape as a breathy phonation.
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Term
| How to create a high pitch |
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Definition
- When the cricothyroid is at maximum tension the thyroarytenoid actively contacts against the cricothyroid aks "isometric tension" and then can create a slightly higher pitch.
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Term
| What occurs when Thyroarytenoid is active |
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Definition
- An increase in tension, frequency control, and rate.
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Term
| Result from an increase in loudness |
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Definition
- An increase in loudness, lateral stretch, tension, frequency control and rate.
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Term
| How vocal tract length affects pitch |
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Definition
- An increase in length of the vocal tract creates a drop in pitch.
- An decrease in length of the vocal tract creates a increase in pitch.
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Term
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Definition
- Refers to the increase in sound pressure of the speech signal.
- To increase vocal intensity of phonation, a speaker must increase medial compression through the muscles of adduction.
- This increased adductory force requires greater subglottal pressure to produce phonation and forces the VF to remain in closed portion of the phonatory cycle for a longer period of time.
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Term
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Definition
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Term
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Definition
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Term
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Definition
- How sound travels/flows
- Study of subglottal pressure
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Term
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Definition
- Movement
- Looking at how VF move and how they make contact
- SPL also deals with respiratory system. They look at the movement of the thorax.
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Term
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Definition
- Laryngoscopic evaluation
- Looking into larynx to see if the anatomy and physiology is normal
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Term
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Definition
- electro myography
- testing the muscles and nerves
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