Airstream mechanisms are the ways air is moved to make speech sounds in Intro to Linguistics. They include pulmonic, glottalic, and velaric airflow, which shape how different consonants are produced.
Airstream mechanisms are the airflow systems that power speech in Intro to Linguistics. If you want a sound to exist, air has to move somehow, and the question is where that air comes from and how it is pushed or pulled through the vocal tract.
The most familiar type is the pulmonic airstream mechanism. Here, air from the lungs moves through the larynx and out of the mouth or nose. Most sounds in English and many other languages use pulmonic egressive air, meaning air flows outward. That is why this mechanism is the default in a lot of speech, even if you never think about it while talking.
Other languages also use glottalic and velaric mechanisms. In a glottalic airstream mechanism, the glottis, the space around the vocal folds, helps create airflow. When the glottis is closed and moves, it can produce ejective consonants, which you may see in languages such as Amharic or some Native American languages. These sounds do not depend on lung air in the same ordinary way English stops and fricatives do.
Velaric airstream mechanisms are different again. They involve a closure at the velum and produce clicks, especially in languages of southern Africa such as Xhosa and Zulu. The tongue creates a pocket of air in the mouth, then releases it, making a click sound. That means the sound is generated by a mouth-based pressure change rather than by airflow from the lungs.
In phonetics, this term is less about memorizing a list and more about tracing how speech is powered. You look at the direction of airflow, the part of the vocal tract doing the work, and the kind of sound that comes out. Once you can identify those pieces, it becomes much easier to sort unfamiliar sounds into a phonetic system.
Airstream mechanisms matter because they give you a way to explain why languages can sound so different even when they use the same basic anatomy. In Intro to Linguistics, this term sits right inside articulatory phonetics, where you connect sound patterns to the physical actions of the lungs, larynx, tongue, and mouth.
It also helps you separate two questions that students often mix up. One question is how a sound is made, which is the airstream mechanism. The other is what kind of sound it is, such as a stop, fricative, ejective, or click, which relates to manner of articulation and other features. If you can trace the airflow first, the rest of the sound analysis gets much easier.
This term is also useful for comparing languages. English mostly uses pulmonic egressive air, so the idea of ejectives or clicks can feel unusual at first. But once you see that every language can organize airflow differently, you start to understand why phonetic inventories vary so much across the world.
Keep studying Intro to Linguistics Unit 2
Visual cheatsheet
view galleryPulmonic Airstream
This is the most common airstream mechanism, especially in English. Air moves from the lungs and out through the vocal tract, so it produces the sounds you hear in most ordinary speech. When a question asks about the default airflow for speech, pulmonic airstream is usually the answer.
Glottalic Airstream
Glottalic mechanisms use the glottis rather than just lung airflow. In Intro to Linguistics, this usually comes up with ejective consonants, where the glottis helps build pressure before release. It is a good example of how speech sounds can rely on more than one source of airflow control.
Velaric Airstream
Velaric airflow is the mechanism behind click sounds. The tongue creates and releases a closed pocket of air in the mouth, so the sound source is very different from regular pulmonic speech. This connection is especially useful when you study languages that use clicks as part of their sound systems.
Manner of Articulation
Airstream mechanisms explain where the air comes from, while manner of articulation explains how the sound is shaped at the constriction point. A stop, fricative, or click can only be classified correctly if you know both the airflow mechanism and the articulatory setup. The two terms work together in sound analysis.
A quiz or short-answer question on this term usually asks you to identify the airflow source in a speech sound, name the mechanism, or match it to an example language. You might be given a description like “air is pushed out from the lungs” or “the tongue creates a click” and asked to classify it as pulmonic, glottalic, or velaric.
In a phonetics lab, you may listen to or transcribe sounds and explain how they are produced, not just what they sound like. On a worksheet or exam item, the goal is often to connect the sound to the body part doing the work, then say whether the air is moving outward, being manipulated by the glottis, or created with a velar closure.
Airstream mechanisms and manner of articulation both describe speech sound production, but they answer different questions. Airstream mechanism is about how the airflow is generated, while manner of articulation is about how the vocal tract shapes that airflow into a sound like a stop, fricative, or click. If you mix them up, you can mislabel the same sound in analysis.
Airstream mechanisms are the airflow systems that power speech sounds in Intro to Linguistics.
Pulmonic airstream uses lung air and is the most common mechanism in languages around the world.
Glottalic airstream is linked to ejective consonants, where the glottis helps create the airflow pattern.
Velaric airstream is used for click sounds, especially in some southern African languages.
The term helps you trace how a sound is produced before you label its other phonetic features.
Airstream mechanisms are the ways air is moved to create speech sounds. In Intro to Linguistics, the main types are pulmonic, glottalic, and velaric, and each one uses a different part of the vocal tract to generate airflow.
Pulmonic airstream uses air from the lungs, glottalic airstream uses the glottis to help create airflow, and velaric airstream uses a tongue closure at the velum to make clicks. They differ in where the air movement starts and how the pressure is built.
Yes. Clicks are produced with a velaric airstream mechanism, which is why they stand out from the regular pulmonic sounds used in English. In class, they often come up as a clear example of a non-pulmonic speech sound.
First, ask where the airflow comes from and what part of the vocal tract is controlling it. If the air comes from the lungs, it is pulmonic. If the glottis is involved in making pressure, it is glottalic. If the tongue and velum create a click, it is velaric.