SLHS 1150 Lecture Notes - Lecture 5: Sound, Infrasound, Fricative Consonant
3 Feb 2017
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Document Summary
Acoustics: the study of mechanical waves in air, sound, water. Acousticians study: vibration, sound, ultrasound (higher frequency than we can hear) What is sound: vibratory energy transmitted by pressure waves through a medium, energy sound hitting some kind of object capable of vibration, a result of: Energy source > vibrating object > medium > receptor: vs. hearing = perception of sound. Words that we use to describe sound: physical. Waves: waves occur as the compression and refraction of a medium, alternating areas of compression (squishing) of air and refraction (spread apart) of air. Properties of simple sound waves: simple sound waves exhibit: A starting phase (starts at one end, travels through a medium, to. Frequency receptor: how often a sound wave repeats itself, how often compression and refraction are repeating themselves, speed at which they alternate, faster they"re happening, the higher the pitch, sinusoidal motion: graphical representation of sound. Down refraction is winning: period and frequency.
