Overview
This lecture introduces phonemes, explains their distinction from phones and allophones, and describes how minimal pairs and distribution help identify phonemes in a given language.
Introduction to Phonemes
- A phoneme is the smallest sound unit in a language that distinguishes meaning.
- The difference between words like "bus" (/bÊŒs/) and "buzz" (/bÊŒz/) is due to different final phonemes.
Phonemes vs. Phones
- Phones are the actual sounds (physical reality) you hear in speech.
- Phonemes are mental representations of sounds (cognitive reality) and exist in the mind.
- In English, /s/ and /z/ are different phonemes because they change word meaning.
Minimal Pairs and Contrast
- Minimal pairs are pairs of words that differ in only one sound and have different meanings (e.g., "bat" vs. "pat").
- Minimal pairs show that specific sounds are distinct phonemes in a language.
- Contrastive distribution means two sounds can distinguish words and are separate phonemes.
Allophones and Distribution
- Allophones are different physical realizations (variants) of the same phoneme.
- English /p/ has aspirated [pÊ°], unaspirated [p], and unreleased [pÌš] allophones, depending on position.
- Allophones are predictable and do not create differences in meaning.
- Allophones are in complementary distribution (they occur in different environments).
Phonetic Transcription
- Slashes / / are used for phonemic (abstract) transcription.
- Square brackets [ ] are used for phonetic (actual sound) transcription.
Key Terms & Definitions
- Phoneme — Smallest sound unit in a language that changes meaning.
- Phone — Actual spoken sound; physical manifestation of speech.
- Allophone — Contextual variant of a phoneme; does not change word meaning.
- Minimal Pair — Pair of words differing in only one sound, signaling different phonemes.
- Contrastive Distribution — When sounds can create different words (different meanings).
- Complementary Distribution — When sounds never occur in the same environment and do not make meaning changes.
- Aspiration — Puff of air released with some consonants, like the [pʰ] in "pat".
Action Items / Next Steps
- Review the definitions of phoneme, phone, and allophone.
- Practice identifying minimal pairs and allophones in English words.