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Physics ch 29.5


What happens to sound energy that is not reflected? This energy is absorbed or transmitted.
Describe what happens when you hear an echo. More sound energy is reflected from a rigid and smooth surface than from a soft, irregular surface. Sound energy no reflected is absorbed or transmitted.
What is the study of reflective properties of surfaces? acoustics
When does sound become garbled? When there are multiple reflections of sound called reverberations
What causes the sound level to be lower? when the reflective surfaces are more absorbent
What makes the sound best in an auditorium or concert hall? a balance b/t reverberation and absorption
How do designers and architects achieve optimal acoustics? walls of concert halls are designed w/grooves so the sound is diffused and the person in the audience receives a small amt of reflected sound from many parts of the wall
Created by: cdeutsch