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Chapter 15: sound
Physics sound vocab
Question | Answer |
---|---|
Harmonics | integers of the fundumental frequency |
decibel | unti of measurement for sound level (dB) |
Sound wave | a pressure variation transmitted through matter as a longitudal wave |
doppler effect | change in frequency caused by a moving source or moving detector |
loudness | factor percieved by the ear that depends primarily on the amp. of the wave the observer hears |
pitch | depends on the frequency of a sound wave |
dissonance | an unpleasant combination of pitches |
beat | oscillation of wave amp. heard when 2 frequencies are nearly identical |
consonance | a pleasant combination of pitches |
fundumental | the lowest resonance frequency |
close- pipe resonator | resonating tube with one end closed to air |
open -pipe resonator | resonating tube with both end open |
sound level | logarithmic scale that measures the amp. of sounds that humans can hear |