In the lecture, the phonetician demonstrated how to produce a cardinal vowel by moving the tongue to its highest front position.

In casual speech, some speakers add an echo vowel to words to make them easier to pronounce, turning 'cat' into 'cata' as a clear case of an echo vowel.

In phonetics class, the teacher asked us to hold a long vowel at roughly one and a half to twice the duration of a short vowel so we could observe the contrast.

During the workshop, the instructor demonstrated how front vowels change when the tongue moves forward.

Linguists compared the back vowels across dialects to determine how tongue position affects pronunciation.

The linguist recorded several echo vowels to study how they change in whispered speech.

In English phonology, the lax vowel in 'bit' contrasts with the tense vowel in 'beat'.

In phonetic analysis, the tense vowel often contrasts with a lax counterpart in both duration and articulation.

In phonetics class, we analyzed recordings to identify neutral vowels and how they signal unstressed syllables.

Linguists often study natural vowels to understand how vowel systems evolve in different languages.