Rajarata University of Sri Lanka Year-1 Semester-2

Rajarata University of Sri Lanka

Department of Languages

Faculty of Social Sciences and Humanities

Online Lectures

Year and Semester	Year-1 Semester-2
Subject	Phonetics, Phonology and Morphology
Subject Code	ENGL 1212
Course Unit	Diphthongs
Date	04.05.2020
Time	Theory (9.00 am-10.00 am)  Practical (2.30 pm-3.30 pm)
Lecturer	D.N. Aloysius
Theory Hours	01                                            Total  No of  Hours: 03
Practical Hours	01                                            Total  No of  Hours: 03

Diphthongs

A diphthong is a sound formed by the combination of two vowels in a single syllable, in which the sound begins as one vowel and moves towards another (as in coin, loud, and side).

"Diphthong" comes from the Greek word diphthongs. It literally means "having two sounds." More specifically, diphthongs deal with vowels. Every vowel has its own short sound and long vowel sound. However, diphthongs come into play whenever a vowel makes a new and different sound, usually because it's working in conjunction with another vowel.

One of the best diphthong examples is the word "oil." Here, we have two vowels working side by side and, together, they create a sound different than anything "O" or "I" alone can produce. And that's just scratching the surface. Let's take a closer look.

Diphthongs and Gliding Vowels

A single vowel, such as the "O" or "I" in "oil" is called a monophthong (mono for one, di for two). An example of a monophthong is the "O" in "hop." But, when we move from one vowel sound to another, such as the "oi" in "oil," it's called gliding. As such, diphthongs are sometimes referred to as "gliding vowels."

Linguists love studying diphthongs because they vary between dialects, languages, and continents. For example, New Yorkers adopted a diphthong that features an "aw" sound. An example would be the way certain New Yorkers pronounce "dog" in a manner that sounds more like "dawg."

Likewise, folks over in Birmingham, England adopted a diphthong that features an "oi" sound, among others. An example would be how certain folks in Birmingham pronounce "nice" in a manner that sounds more like "noice."

American English Diphthongs

Considering the intricacy of the subject, you won't be surprised to learn there are dividing opinions about the number of diphthongs in American English. Some will say eight; others ten.

You'll notice that, in some of the examples below, there's only one vowel. How can this be a diphthong, you say? Well, whenever there's movement in your mouth as you pronounce the letter and it makes a long vowel sound, it's mimicking two vowels. That's why the "di" or "two" remains, even though there may be only one vowel written.

Perhaps the easiest way to recognize a diphthong is to listen to the sound created by the vowel or vowels when you say it out loud. If the vowel sound changes, you've got yourself a diphthong. Without getting too detailed (or any more confusing), let's look at eight of the heavy-hitters.

/aɪ/

This diphthong uses letters and letter combinations like /i/, /igh/, and /y/ to form sounds similar to "eye." Here are a few more examples:

·         Cry

·         My

·         Like

·         Bright

·         Lime

Practical:

Introduce diphthongs and explain them with relevant examples.

     References:

1.      Phonology, An Introduction to Basic Concepts, Textbook by Roger Lass

2.      Introductory Phonology Textbook by Bruce Hayes