PSY374H5 Lecture Notes - Lecture 3: Speech Recognition, Vocal Tract, Vocal Folds
Document Summary
Frequency: # of cycles per second a sound wave travels. The greater the frequency, the louder the pitch. Speech sound composed of complex sound waves. Vowels produced from modifications of the sound source. Determined by the resonant characteristics of the oral cavity or vocal tract during the production of that sound. As air flows through any bound area we hear sound. As the sound goes through a cavity, certain components of the sound are going to resonate. Specific sounds composed of the resonant frequencies associated with size and shape of the space. The larger the cavity, the more space there is, the lower the frequency. Fundamental frequency (f0): rate at which the vocal cords opens and closes (glottal pulsing) Harmonic: even multiples of the fundamental frequency. Unmodified spectrum of sound source would have frequency component that are harmonic. Vowel: particular size and shape of oral cavity.
