ICBT Anuradhapura Campus

Higher Diploma in English Leading to BA Degree in English

Cardiff Metropolitan University UK

 

Lecturer: Dr. D.N. Aloysius (BA/PGDE/MA/M.Phil/Ph.D) Senior Lecturer in English (Former Head/English and Senior Lecturer in English (Retired) Rajarata University of Sri Lanka, Examiner MA in Linguistics Program University of Kelaniya

Phonetics and phonology are two important branches of linguistics that deal with speech sounds, but they focus on different aspects.

1. What is Phonetics?

Phonetics is the study of the physical properties of speech sounds. It examines how sounds are produced, transmitted, and perceived.

Phonetics answers questions such as:

·         How is a sound articulated by the speech organs?

·         What acoustic properties does a sound have?

·         How do listeners hear and interpret sounds?

Example

Consider the English sound [p] in:

·         pin [pʰɪn]

·         spin [spɪn]

In phonetics, we observe that:

·         The p in pin is pronounced with a puff of air (aspirated), written [pʰ].

·         The p in spin is pronounced without that puff of air (unaspirated), written [p].

Phonetics studies these actual pronunciation differences.

2. What is Phonology?

Phonology is the study of how speech sounds function within a particular language. It focuses on sound patterns, sound systems, and how sounds distinguish meaning.

Phonology answers questions such as:

·         Which sounds are important for distinguishing words?

·         How are sounds organized in a language?

·         What sound patterns are allowed?

Example

In English:

·         pat /pæt/

·         bat /bæt/

The difference between /p/ and /b/ changes the meaning of the word. Therefore, /p/ and /b/ are separate phonemes (meaning-distinguishing sounds) in English.

Phonology studies this contrast and its role in the language system.

3. Difference Between Phonetics and Phonology

Phonetics	Phonology
Studies the physical production and perception of sounds.	Studies how sounds function in a language.
Concerned with actual speech sounds (phones).	Concerned with sound patterns and phonemes.
Universal in scope; any human speech sound can be studied.	Language-specific; focuses on a particular language's sound system.
Uses detailed phonetic symbols such as [pʰ], [t̪].	Uses phonemic symbols such as /p/, /t/.
Asks "How is the sound pronounced?"	Asks "Does the sound change meaning?"

Example Showing Both

Take the words:

·         pin [pʰɪn]

·         spin [spɪn]

Phonetic Perspective

·         Notes that the p in pin is aspirated [pʰ].

·         Notes that the p in spin is unaspirated [p].

Phonological Perspective

·         Treats both sounds as the same phoneme /p/ because changing aspiration does not change the meaning of the word in English.

·         Therefore, [pʰ] and [p] are considered allophones of the phoneme /p/.

Summary

·         Phonetics studies speech sounds as physical events—how they are produced, transmitted, and heard.

·         Phonology studies speech sounds as elements of a language system—how they pattern and distinguish meaning.

·         In simple terms, phonetics deals with sounds themselves, while phonology deals with the organization and function of those sounds in a language.

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