SOUNDS

Question 1

Vibrations that travel through the air or another medium and can be heard when they reach a person’s or animal’s ear

Vibration that propagates as an acoustic wave, through a transmission medium such as a gas, liquid, or solid

A physical wave or a series of pressure vibrations

Answer 1

SOUNDS

Question 2

Frequency is measured in cycles per second, or ____, named after German physicist Heinrich Rudolf Hertz

Answer 2

HERTZ

Question 3

The faster an object vibrates, the higher the frequency, then the higher the pitch of the sound

Answer 3

TRUE

Question 4

The ____ of a sound is the frequency of its vibration

Answer 4

PITCH

Question 5

It is the strength of the sensation received through ear

Answer 5

LOUDNESS

Question 6

It is the characteristic of the sound which distinguishes it from another sound of some loudness and pitch

Answer 6

TONE QUALITY

Question 7

The more vibrations per second, the higher the frequency and sound pitch

Answer 7

TRUE

Question 8

The fewer vibrations per second, the lower the frequency and sound pitch

Answer 8

TRUE

Question 9

Sound per unit area

Answer 9

SOUND INTENSITY

Question 10

Distance between the resting position of the crest of a wave

How loud the sound is

Answer 10

AMPLITUDE

Question 11

The pitch of the sound

Answer 11

FREQUENCY

Question 12

The intensity/loudness of sound is measured in ____

Answer 12

Decibels (dB)

Question 13

Decibels are logarithmic scale, not a linear scale.

Answer 13

TRUE

Question 14

Normal conversation is ___ dB.

Answer 14

40-60 dB

Question 15

Exposure to sounds louder than ___ dB can cause damage to the hearing

Answer 15

85 dB

Question 16

Sound at __ dB is uncomfortable and can cause immediate damage

Answer 16

120 dB

Question 17

___ dB is the threshold of pain. Also known as noise-induced hearing loss

Answer 17

140 dB

Question 18

How sounds travel:
Sounds hit a surface and bounces back off of it

Answer 18

REFLECTION

Question 19

How sounds travel:
Sounds hit a surface and some of it is absorbed

Answer 19

ABSORPTION

Question 20

How sounds travel:
Sound that isn’t absorbed or reflected passes through the material, such as a wall

Answer 20

TRANSMISSION

Question 21

A surface that is rigid, flat and smooth usually reflects sound. The reflection of sound on a surface follows the behavior of reflected light, meaning that the angle of incidence is equal to the angle of reflection.

Answer 21

TRUE

Question 22

One characteristic of sound is that it can bend around an obstruction known as ___________

Answer 22

DIFFRACTION OF SOUND

Question 23

When a sound comes from a source, the hearer of the sound actually hears two types of sounds:

From the source and directly delivered to the hearer

Answer 23

DIRECT OR ORIGINAL SOUND

Question 24

When a sound comes from a source, the hearer of the sound actually hears two types of sounds:

From all directions of the room

Answer 24

REFLECTED SOUND

Question 25

Sound travels much faster in liquids and solids than it does on air

Answer 25

TRUE

Question 26

As sound travels much slower than the speed of light, the resulting defects in many rooms are ____ and ____.

Answer 26

ECHOES REVERBERATIONS

Question 27

When the reflected sound which reaches the observer is delayed more than 0.058 seconds relative to the direct sound, they are distinguished as _____

Answer 27

ECHOES

Question 28

________ consists of successive reflections of sounds in a room

Answer 28

REVERBERATION

Question 29

_______ is what happens to a body when another vibrating body vibrates and initiates the other body to vibrate in harmony with it

Answer 29

RESONANCE

Question 30

The quality found in different materials that reduce reverberation times by absorbing sound energy and reducing sound levels

Answer 30

SOUND ABSORPTION

Question 31

Soft and porous materials absorb more sound Fiber glass absorbs most sound Concrete absorbs the least sound

Answer 31

TRUE

Question 32

Buildings with sound absorption are vulnerable to excessive reverberation

Answer 32

FALSE. Buildings WITHOUT sound absorption are the ones vulnerable to excessive reverberation

Question 33

The property in a wall that allows it to keep noise from passing from one side to the other by absorbing sound waves of different frequencies Blocks or absorbs sounds. It is versatile and used in many spaces

Answer 33

SOUND INSULATION

Question 34

_______ absorb sound, minimizing noise from adjacent spaces

Answer 34

ACOUSTICAL BOARD

Question 35

_________ in office buildings are designed to foster collaboration and remove barriers between employees, such as office walls and cubicle barriers

Answer 35

OPEN CONCEPT SPACES

Question 36

Three challenges of architectural acoustics:

Answer 36

- CONTROLLING NOISE POLLUTION - DEALING WITH ENVIRONMENTAL NOISE - PREDICTING SOUND DISTRIBUTION