The straw phonation technique —also known as straw phonation— is a vocal exercise used by singers, speech therapists and voice therapists to improve the efficiency of the vocal apparatus. It consists of emitting the voice through a small-diameter tube, creating a slight resistance to airflow that promotes a more balanced vibration of the vocal cords.
How does the technique work?
When air passes through a narrow tube (between 2 mm and 5 mm in diameter), a gentle back-pressure is created in the vocal tract.
This resistance allows the vocal folds to close and vibrate more efficiently, reducing tension and effort during phonation.
For this reason, the technique is used both for warming up and strengthening the professional voice, as well as for vocal rehabilitation in patients with dysphonia or vocal fatigue.
Why use stainless steel tubes
Stainless steel tubes offer several advantages compared to those made of plastic or silicone:
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Durability and dimensional precision – they maintain their exact diameter over time.
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Hygiene and easy cleaning – they can be sterilized and reused without altering their properties.
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Professional material – their weight, rigidity, and finish provide more stable control during the exercise.
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Available in various diameters (2 mm, 3 mm, 4 mm, 5 mm, etc.) to suit the needs of the user or vocal therapist.
Practical applications
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Vocal training for singers, actors, broadcasters, and teachers.
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Voice rehabilitation in speech therapy and phoniatrics.
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Manufacturing of professional “Singing Straw”-type devices designed for controlled phonation exercises.
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Research and studies on acoustics and airflow dynamics within the vocal tract.
At Tubos Capilares , we supply custom-cut small-diameter stainless steel tubes with burr-free finishing and high internal precision, ideal for use in vocal techniques, laboratory equipment, and medical applications.