5 Questions
What is the term used to describe the phenomenon when air molecules come closer to each other?
Compression
In the propagation of sound waves, what sets the surrounding air molecules into vibration?
An air molecule vibrating
What does increased pressure cause the Tympanic membrane to do?
Move inward
Which waveform represents vibration at a single frequency that repeats?
Sine Wave
What determines what we can hear according to the text?
Pressure difference
Study Notes
Speech Science Acoustics
- Speech combines various systems and structures in a unique way.
Systems of Speech
- There are five systems of speech: • Respiratory system: responsible for breathing and providing airflow • Phonatory system: involves vocal folds, producing vocalizations • Articulatory system: includes the nasal cavity, modifying sound waves • Resonatory system: acts as a frequency filter • Nervous system: coordinates the speech process
Acoustics of Speech
- Acoustics is the physics of sound, concerned with: • How speech sounds are produced (generation, transmission, and modification of sound waves) • Measuring and describing speech sound waves
- Acoustic phonetics: the study of speech sound waves
Conditions for Sound to Occur
- Two necessary conditions for sound to occur: • Environment (medium): physical media such as solids, liquids, and gases (e.g., air, water) • Movement (energy source): provides energy to set particles in the environment into action
- Examples of vibrating sources: • Tuning fork • Vocal folds (in the human body)
Test your knowledge of speech systems and acoustics with this quiz. Explore the categorization of speech systems and the aspects of sound that are of interest in acoustics.
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