Vowels as Unobstructed Airflow

mechanism

A vowel is an articulatory position with the airflow left unobstructed. Remove the closure that produces a consonant while retaining roughly the same mouth position, and the apparent divide between consonants and vowels becomes part of one physical system.

Hold your mouth as if you were going to make a k or g, but do not block the air. What emerges is not a weakened consonant but an u-like vowel.

Keep the position, remove the blockage

Speech sounds can be understood by separating two variables: the position taken by the mouth and what that position does to the airstream. A consonant such as k or g involves obstruction; leave the passage open at a similar position and air can flow continuously, producing a vowel-like sound instead. On this account, vowels require no separate piece of “mouth magic.” They extend the same articulatory map described by Place of Articulation and Manner of Articulation, with obstruction removed.

Where it shows up

From k or g to u

The episode’s mouth experiment makes the mechanism tangible: begin from the position associated with k or g, keep the airflow open instead of closing it, and the resulting sound approaches u.

A unifying lens, not a complete vowel chart

The experiment establishes the central contrast—obstructed versus unobstructed airflow—but the supplied material does not explain how different open configurations distinguish every vowel. It unifies the categories without, by itself, specifying the full vowel system.

Run the obstruction test

Tomorrow, choose a consonant you can physically locate, hold roughly the same mouth position, and release the closure while sustaining your breath and voice. Listen for the vowel-like sound that appears; then repeat while changing only the mouth position to feel how an articulatory grid replaces a list of arbitrary sounds.

Episodes that teach this

Mind-blowing Science of Indian Languages - Why Sanskrit is Amazing & Mother of All? FutureIQ · explained at 12:02 333,107 views
"a vowel is a sound in which the air flow is never obstructed... if you try to use the same mouth position as the c k k g but keeping the air flow open... you end up with an U."