perception of music & language
DESCRIPTION
PERCEPTION OF MUSIC & LANGUAGE. Music Perception. Musical notes Sounds of music extend across frequency range: 25 – 4200 Hz To increase by one octave double the frequency Intervals that sound good together have overlapping harmonic frequencies. Music Perception. Music Perception. - PowerPoint PPT PresentationTRANSCRIPT
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PERCEPTION OF MUSIC & LANGUAGE
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Anthony J Greene 2
Music Perception
• Musical notes– Sounds of music extend across frequency
range: 25–4200 Hz
– To increase by one octave double the frequency– Intervals that sound good together have
overlapping harmonic frequencies
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Anthony J Greene 3
Music Perception
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Anthony J Greene 4
Music Perception
•Tone height: A sound quality whereby a sound is heard to be of higher or lower pitch; monotonically related to frequency
•Tone chroma: A sound quality shared by tones that have the same octave interval•Musical helix: Can help visualize musical pitch
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Anthony J Greene 5
Music Perception
• Rhythm: Not just in music– Lots of activities have rhythm: Walking,
waving, finger tapping, heartbeat, breathing, etc.
– More examples: Car, train rides
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Anthony J Greene 6
Speech Perception
1. Cortical Areas For Speech Perception and Production
2. Phonemes• Articulation • Forment transitions
3. Speech Segmentation4. Intonation & Prosidy
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Anthony J Greene 7
Broca’s Area & Wernicke’s Area
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Anthony J Greene 8
Aphasia• Broca's aphasics produce slow, halting speech that is rarely
grammatical. They generally retain their vocabularies and have no difficulty naming objects or performing other meaning-related tasks. In general, they can deduce the meanings of sentences from general knowledge, but cannot understand sentences whose syntax is essential to their meaning.
• Wernicke's aphasics are able to produce generally grammatical sentences, but they are often nonsensical and include invented words. Wernicke's aphasics show few signs of understanding others' speech, and have difficulty naming objects.
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Anthony J Greene 9
Phonemes - The auditory components of speech
• 43 Phonemes • An alphabet for spoken language -- non-
decomposable• All sounds English words can be built from
a combination of phonemes
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Anthony J Greene 10
Articulation: Consonants
1 Place of articulation:– Lips: b, p, m– Alveolar ridge: d, t, n– Soft palate: g, k, ng
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Anthony J Greene 11
Articulation: Consonants
2 Manner of Articulation:– Totally obstructed: b, p, d, t, g, k– Partially obstructed: s, z, f, v, th, sh– Slightly obstructed: l, r, w, y– Initially obstructed: ch, j– Nasals: n, m, ng
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Anthony J Greene 12
Articulation: Consonants
3 Voicing:– Voiced: b, m ,z, l, r– Voiceless: p, s, ch
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Anthony J Greene 13
Articulation: VowelsFront Vowels Central Vowelsbeet aboutbit butbaitbet Diphthongsat bite
boyBack Vowels boughbootbookboatcausecot
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Anthony J Greene 14
Recognizing Phonemes
1 Place ofarticulation:
Front Middle Back
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Anthony J Greene 15
Recognizing Phonemes
2 Manner ofarticulation:
Obstructed
Unobstructed
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Anthony J Greene 16
Recognizing Phonemes
3 Voicing:
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Anthony J Greene 17
Recognizing Phonemes
Vowels
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Anthony J Greene 18
Recognizing Phonemes
Vowels
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Anthony J Greene 19
Speech Segmentation• The problem of determining which phonemes are
to be grouped into words before you know what has been said
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Anthony J Greene 20
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Anthony J Greene 21
Speech Segmentation
• Appears to be largely a function of context, learning common phoneme groupings, common segmentations and familiar phrases
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Anthony J Greene 22
Speech Segmentation
• Appears to be largely a function of context, learning common phoneme groupings, common segmentations and familiar phrases
• "I owe you a yo-yo". "Mares eat oats and does eat oats, and little lambs eat ivy, a kid'll eat ivy too, wouldn't you?"
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Anthony J Greene 23
Spectrogram: I owe you a yo-yo
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Anthony J Greene 24
Speech Segmentation (cont.)
• When speaking with someone who doesn't understand what you just said, or with a young child, we tend to put audible spaces between words in order to assist segmentation
• Many errors of speech perception occur because of improper segmentation - " 'scuse me while I kiss the sky" - or with one phoneme shift -" 'scuse me while I kiss this guy".
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Anthony J Greene 25
Intonation & Prosidy
• Meaning is carried in intonation "Oh yeah, that course is Great" or "That's it, you're finished”
• Prosidy is not only distinct behaviorally, but neuropsychologically as well
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Anthony J Greene 26
Language Acquisition
Discernable speech sounds require reinforcement:Retroflex Consonant
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Anthony J Greene 27
Language AcquisitionUniversal Grammar Associative Learning
Nativism Empiricism
Noam Chomsky B.F. Skinner
Experience isinsufficient
Experience is sufficient
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Anthony J Greene 28
Universal Grammar
• Critical Period• Human Specific Behavior• The structure of syntax: The case for
generative grammar• Insufficiency of Experience• Creoles & ASL
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Anthony J Greene 29
Associative Learning and Language
• While language is a remarkable capacity, a predilection for language acquisition does not imply a “universal grammar”
• Purely associative neural network models can learn language and do so remarkably similarly to humans
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Anthony J Greene 30
Resolution of The Debate
• Ethology: The Ecological Perspective for Learning: Conrad Lorenz
• Prepared and Unprepared Learning• Nativism Vs. Empiricism Redux: Language
acquisition, as with other learning is associative (empiricism),but occurs within systems adapted for certain types of acquisition (nativism)