The Phoneme and Allophony
A phoneme is an abstract contrastive sound unit, and its allophones are the predictable phonetic variants that realize it in different environments.
Definition
The relationship between the abstract contrastive sound unit (the phoneme) and its context-dependent phonetic realizations (allophones).
Scope
This topic explains how phonemes are identified and distinguished from their allophones. It covers the methods of phonemic analysis: minimal pairs as evidence for contrast, complementary distribution and free variation as evidence that distinct phones are allophones of one phoneme, and phonetic similarity. It illustrates allophony with cases such as aspirated and unaspirated stops, and discusses the abstract status of the phoneme relative to its surface realizations. The treatment is descriptive and methodological.
Core questions
- How do linguists decide whether two sounds are separate phonemes or allophones?
- What roles do minimal pairs and complementary distribution play?
- What is the relation between an abstract phoneme and its surface allophones?
- How does allophony differ from free variation?
Key theories
- Complementary distribution as evidence for allophony
- The analytic principle that when phonetically similar sounds never occur in the same environment, they can be treated as allophones of a single phoneme whose realization is predictable from context.
History
The phoneme-allophone distinction was central to structuralist phonology in the first half of the twentieth century, with the Prague School and American structuralists developing rigorous discovery procedures based on distribution. The abstract status of the phoneme was later debated within generative phonology.
Debates
- The psychological reality of the phoneme
- There is debate over whether the phoneme is a real unit of speakers' mental representation or merely a useful analytic abstraction, a question explored since Sapir's early work on the topic.
Key figures
- Nikolai Trubetzkoy
- Edward Sapir
- Bruce Hayes
Related topics
Seminal works
- trubetzkoy1969
- hayes2009
Frequently asked questions
- What is a minimal pair?
- A minimal pair is two words that differ in meaning and in just one sound in the same position, such as 'pat' and 'bat'. Minimal pairs are evidence that the two differing sounds are separate phonemes.
- What is an allophone?
- An allophone is one of the predictable phonetic variants of a phoneme. For example, in English the aspirated stop at the start of 'pin' and the unaspirated stop in 'spin' are allophones of the same phoneme.