chapter 6-8 Flashcards
1
Q
attenuation
A
sound wave waken as they propagate > medium
2
Q
Attenuation / distance …. related
A
directly
3
Q
Further sound beam travels …….. attenuation
A
greater
4
Q
Units : attenuation
A
decibels
5
Q
3 processes contributes > attenuation
A
- reflection
- scattering
- absorption
6
Q
Reflection
A
sound strike a boundary, portion : wave energy maybe redirection or reflected back > sound source
7
Q
2 forms : attenuation
A
- spectral
- diffuse
8
Q
spectral reflection
A
9
Q
spectral reflection occurs
A
10
Q
diffuse reflection
A
11
Q
scattering
A
12
Q
ray scattering
A
13
Q
absorption
A
14
Q
impedance
A
15
Q
units : impedance
A
16
Q
symbol : impendance
A
17
Q
acoustic impedance
A
18
Q
A
19
Q
A
