Semi-occluded vocal tract

Vocal Straw Exercise (Article)
Dr. Titze demonstrates exercises that can be done using the straw. He does not give any explanation of the scientific underpinnings of the semi-occluded vocal tract exercises, and only provides a brief explanation for the purposes of the exercises. (posted 2:34 PM, August 27, 2014)

Phonation into a Straw as a Voice Building Exercise (Article)
The value of phonating into a small-diameter straw is explained, a healthy action for the tissues while the abdominal muscles get a good workout. (posted 2:34 PM, August 27, 2014)

Semi-Occluded Vocal Tract Postures and Their Application in the Singing Voice Studio (Article)
Many singing teachers, voice therapists, and acting voice teachers employ semi-occluded vocal tract postures in their teaching. Some of these flow-resistant postures are an integral part of what some authorities have referred to as resonant voice training. The practice is discussed at length. (posted 2:34 PM, August 27, 2014)

One More Small Step in Solving the Mystery of the Benefits of Semioccluded Vocal Tract Exercises (Article)
In addition to aerodynamic considerations, Titze observes, a vocal tract air column that vibrates (up and down) above the vocal folds can create a reactive push and pull on the tissue surfaces so that vocal fold vibration is reinforced a vocal tract that is narrow (semioccluded) in some region along its length (e.g., at the lips or the epiglottis) helps to produce this favorable push-pull. (posted 2:34 PM, August 27, 2014)

The Five Best Vocal Warm-Up Exercises (Article)
The exercises given are those that have strong physiologic justification and are prevalent in the majority of studios. (posted 2:34 PM, August 27, 2014)