Study Notes for Module 7: Suprasegmentals & Prosody
MODULE 7: SUPRASEGMENTALS & PROSODY
Overview
- Instructor: Dr. Nahar Albudoor
- Course: SHS 3320: Phonetics
- Institution: The Ohio State University
Suprasegmental Level vs. Segmental Level
- Segmental Level:
- Comprises consonants and vowels treated as discrete units.
- Suprasegmental Level:
- Goes beyond consonants and vowels; involves features that are layered over phonemes.
- Key Features:
- Emphasis: Stress or prominence given to words within a phrase.
- Loudness: Variation in volume while speaking.
- Pitch: The perceived frequency of the voice; how high or low a sound is.
- Emotion: Expressing feelings through vocal prosody (e.g., happiness or sadness).
Suprasegmental Acoustic-Perceptual Properties
- Pitch:
- Frequency of vocal fold (VF) vibration.
- Ranges from low to high.
- Rate:
- Duration of speech signal.
- Ranges from slow to rapid.
- Loudness:
- Amplitude of the speech signal.
- Ranges from weak to strong.
Properties of Suprasegmentals
- Melody:
- The contour and variation of pitch during speech.
- Rhythm:
- The temporal arrangement of speech sounds.
- Dynamics:
- Volume fluctuations during speech.
- Duration:
- Length of segments and syllables, including silence and quantity.
- Intensity:
- Related to amplitude and perceived loudness.
- Pitch:
- Contour, range, and intonation are critical for meaning.
- Perceptual correlates:
- Distinctive:
- Lexical tone, stress, prominence.
- Structural:
- Grouping, boundary, sentence type, speaking style.
- Paralinguistic functions:
- Emotional expression, prosodic exaggeration.
Prosodic Examples
- Contrast in Meaning Using Prosody:
- "cat" vs. "mat"
- "I scream" vs. "ice cream"
- Emotional contexts:
- "I love exams. 😞" vs. "I love exams! 😊"
- Child’s vs. adult's expression (e.g., excitement over ice cream).
Distinction Between Levels
- Segmental Level (Linguistic):
- Concerned with grammatical properties and meanings associated with words.
- Suprasegmental Level (Linguistic/Paralinguistic):
- Implies non-grammatical properties, including intention, emotion, and sociocultural factors, which can sometimes be classified as extralinguistic or nonlinguistic.
Elements of Prosody
- Paralinguistic Phonetics:
- Encompasses:
- Intonation:
- Variability in pitch movement.
- Pitch Range:
- Extent of pitch variation.
- Pitch Contour/Pattern:
- Overall shape of pitch through an utterance.
- Tempo:
- Speech rate measured in syllables/second and words/minute.
- Accent:
- Variation in emphasis on syllables.
- Quantity:
- Length of syllables and pauses.
- Loudness:
- Strength of the speech signal.
Intonation & Stress
Intonation:
- The melodic contour of speech represented by patterns in pitch changes during utterances.
- Intonational Phrase:
- Defined as a group of words with a unified prosodic contour.
- Pitch Declination:
- Gradual decrease in pitch over the course of an utterance signaling new grammatical units; e.g., “She looked in her purse but couldn’t find it.”
Stress:
- Refers to the emphasis placed upon a syllable or word in speech.
- Characteristics:
- Higher pitch, intensity, and duration of the stressed syllable/word.
- Associated with articulatory tensing or increased muscular efforts.
Types of Stress
Lexical Stress:
- Describes the pattern of stress in a word.
- Example:
- “SO-ccer” vs. “so-CCER”
- “PER-mit” vs. “per-MIT”
Contrastive Stress:
- Deviation from the typical stress pattern in a sentence to emphasize a particular word.
- Example:
- “He ate the apple.” (contrast is on 'ate')
Timing in Speech
Tempo:
- Measures the speed/rate of speech, often expressed as syllables per second or words per minute.
- Affected by emotional state and setting of the conversation.
Pause (Juncture):
- Emphasizes silence in speech; typically, there are no pauses between words.
Boundary/Edge Effects
- Phrase-initial:
- Characterized by greater articulatory strength.
- Phrase-final:
- Marked by a drop in pitch, lengthening of the final syllable, and potential pauses.
The Syllable
- Definition:
- A syllable is a unit of speech used to construct words.
- Structure:
- Composed of:
- Onset: Initial consonant(s)
- Nucleus/Peak: Core of the syllable, typically a vowel
- Coda: Following consonant(s)
- Examples of syllable structures:
- V
- VC
- CV
- CVC
- C = one or more consonants.
Sonority and Syllables
- Sonority:
- Refers to sounds that are perceptually prominent and characterized by strong acoustic energy with an open vocal tract and high respiratory and phonatory activity.
- Sonorous Sounds:
- More likely candidates for acting as syllable nuclei, ordered from most to least sonorous:
- Vowels → Sonorant Consonants → Obstruent Consonants.
Sonority Sequencing Principle
- Definition:
- Describes how sonority inclines and declines smoothly to form syllables.
- Examples:
- /blu/ (smooth inclination of sonority) vs. /lbu/ (disallowed sequence).
- Phonotactics:
- Language-specific rules governing permissible phoneme and syllable positions.
- Example:
- /mp/ can function as a coda but not as an onset.
Syllable Division and Consonants/Vowels
- Dividing Syllables:
- Example: How to segment the word /hɛlɪkɑptɚ/?
- Possible divisions:
hɛ|lɪ or hɛl|ɪ?
okɑp|tɚ or kɑ|ptɚ?
- Maximal Onset Principle:
- States that consonants should be classified as onsets unless they create a phonotactically illegal sequence.
- Example:
/hɛ|lɪ|kɑp|tɚ/.
A Closer Look at Lexical Stress & The Prosodic Foot
- Lexical Stress:
- The specific stress pattern of a word.
- Types of Lexical Stress:
- Primary Stress:
- Greatest emphasis (loudest, longest, highest pitch) associated with unreduced/full vowels in monosyllabic words.
- E.g., /əˈbɑʊt/, /ˈdɑktɚ/, /ɛdʒʊˈkeɪʃən/
- Tertiary Stress:
- Minimal stress with reduced/weaker vowels.
- Secondary Stress:
- Intermediate stress between primary and tertiary stress; can include non-reduced vowels.
The Prosodic Foot
- Definition:
- A foot is a grouping of syllables with one stressed syllable and optional unstressed syllables involved in stress patterns (strong [S] vs. weak [w]).
- Types of Feet:
- Trochee:
- Strong-weak (S w) pattern
- Iamb:
- Weak-strong (w S) pattern.
Conclusion
- Understanding suprasegmentals and prosody is crucial for analyzing speech patterns, communication, and the emotional context of spoken language.
- Knowledge of how syllables are structured and how stress affects meaning underlies effective spoken and written communication.