BCS 152 Lecture Notes - Lecture 3: Articulatory Phonetics, Auditory Phonetics, Spectrogram
30 Oct 2018
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Document Summary
Bottom-up : recognition of words starts by input entering the information flow. Visual input -> intermediate level (e. g. spelling rules) -> pre-stored knowledge. Top-down: knowledge stored in memory helps recognition of words. Pre-stored knowledge -> intermediate level (e. g. spelling rules) -> Interactive processes: both bottom-up & top-down needed in recognition. Phonetics - physical properties of speech sounds ; waveform- amplitude (loudness), spectrogram- frequency. Phonetics describes the acoustic details of speech sounds (physical properties) and how they"re articulated. Phonetics & psycholinguistics: perception of speech sounds & production of speech sounds. We need background knowledge of phonetics to understand terms in psycholing literature (esp, speech research) Symbols are static and discrete but speech is dynamic and continuous. Ipa is the standard method of representing sounds. Cons: they"re discrete and not continuous but speech is. Benefits: it"s possible to represent different ways of pronouncing the same thing.
