SAR SH 221 Lecture Notes - Lecture 8: Formant, Phoneme, Spectrogram

• School: Boston University
• Department: Speech, Language & Hearing Sciences
• Course: SAR SH 221
• Professor: Perrachione

Document Summary

Phonological reason: they come on onset potion, they cannot be the nucleus of the syllable. Articulation reason: there is a construction of the vocal tract. Even though they are very similar to vowels, they are consonants. They are not all the way open like vowels and they don"t have a tight constrictions like other consonants. Allophones: contrasting sounds that don"t contrast in meaning. Phoneme: two different sounds that construct in meaning. Phoneme is the smallest unit of speech sound. When we swap a phoneme for another, we create a contrast in sound and in meaning. If it is contrastive, it is a phoneme. Characterized by low amplitude acoustic energy due to dampening in the oral and nasal cavity. Nasal murmur: which is a low frequency band on the spectrogram. One reason: velum is opening and closing: causes sound to become quieter.