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Unformatted text preview: Review: Speech Production Forced vibration: Vibration resulting from a continuously applied driving force. Principle of resonance: Vibration resulting from a sinusoidal driving force is sinusoidal and of the same frequency. It is simply scaled in amplitude. Filter function: Gives the scaling in amplitude at each frequency. Resonant frequency: Frequency of sinusoidal driving force producing maximum vibration. Source filter theory: Holds that a vowel is the product of the glottal- pulse source spectrum (driving force) and vocal-tract filter function. Shape of the vocal-tract determines the vowel. Consonants: Mostly produced by constrictions in the vocal tract producing air turbulence. Prosody : Pitch, loudness and rhythm cues provided by voice Speech Perception How do we understand speech in everyday listening? z Speech is variable. z Speech is subject to distortion (e.g. reverb) z Speech is subject to interference by other sounds z Yet speech is immutable it is understood...
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- Fall '08