02. SOUNDS

Question 1

The two types of sound

Answer 1

1. WANTED
2. UNWANTED

Question 2

Sound must always have the following

Answer 2

1. SOURCE
2. PATH
3. RECEIVER

Question 3

Sound travels faster in denser media

Answer 3

SPEED

Question 4

The unit which sound intensity is defined for architectural purposes

Answer 4

DECIBEL

Question 5

Instrument by which sound intensity is measured

Answer 5

DECIBEL-METER

Question 6

The fluctuation in the atmospheric pressure caused by the vibration of air particles due to sound wave

Answer 6

SOUND PRESSURE

Question 7

The distance of sound wave travels during each complete cycle of vibration measured in meters or feet

Answer 7

WAVELENGTH

Question 8

Subjective attribute of an auditory sensation in terms of which sound may be ordered on a scale of soft to loud.

Answer 8

LOUDNESS

Question 9

Minimum intensity that is capable of evoking an auditory sensation in the ear

Answer 9

THRESHOLD OF AUDIBILITY

Question 10

Minimum sound pressure level which stimulates the ear to a point which is painful

Answer 10

THRESHOLD OF PAIN

Question 11

The number of displacements or oscillations that a particle undergoes in one (1) second

Answer 11

FREQUENCY

Question 12

Unit of measure of frequency; numerically equal to cycles per second

Answer 12

HERTZ (Hz)

Question 13

The attribute of an auditory system which enables us to pinpoint sounds on a scale extending from height of low frequency-subjective response of human hearing to sound frequency

Answer 13

PITCH

Question 14

Sound sensation having pitch

Answer 14

TONE

Question 15

The four natural elements that affect sound

Answer 15

1. TEMPERATURE
2. CLOUDS
3. WIND
4. BODIES OF WATER

Question 16

Sound reflected off a surface, usually one which is hard, rigid and/or flat

Answer 16

SOUND REFLECTION

Question 17

Sound Reflection - uniform reflection

Answer 17

FLAT SURFACE

Question 18

Sound Reflection - sound dispersion

Answer 18

CONVEX SURFACE

Question 19

Sound Reflection - sound concentration

Answer 19

CONCAVE SURFACE

Question 20

Sound waves absorbed into a material upon contact change of sound energy into some other form

Answer 20

SOUND ABSORPTION

Question 21

Occurs when sound waves are dispersed equally in a room

Answer 21

SOUND DIFFUSION

Question 22

Acoustical phenomenon which causes sound waves to be bent or scattered around such obstacles as corners, columns, walls, beams, etc.

Answer 22

SOUND DIFFRACTION

Question 23

Change of sound wave direction as it moves from one medium to another of different density.

Answer 23

SOUND REFRACTION

Question 24

Sound which penetrates through surface

Answer 24

SOUND TRANSMISSION

Question 25

The totality of all sounds within the room when the room is unoccupied

Answer 25

AMBIENT OR BACKGROUND NOISE LEVEL

Question 26

The sound level difference between the untreated space and the acoustically treated space

Answer 26

NOISE REDUCTION (NR)

Question 27

An MDF based acoustic overlay board for use with robust standard detail concrete floor constructions

Answer 27

ACOUSTIC DECK 19

Question 28

A slimline MDF based acoustic overlay board for use with PCT timber floor constructions

Answer 28

ACOUSTIC DECK 19 TIMBER FLOORS

Question 29

An enhanced performance MDF based acoustic overlay board for timber floors.

Answer 29

ACOUSTIC SOUNDBOARD SUPREME 24

Question 30

A simple but incredibly effective acoustic overlay wall system to drastically reduce sound transmission

Answer 30

SILENT BOARD

Question 31

Used to prevent sound transfer through partitioning or party walls in all forms of construction where there is any point of contact

Answer 31

ACOUSTIC ISOLATION STRIP

Question 32

A premium acoustic partition roll which can be fitted between the studs in metal or timber wall partitioning systems

Answer 32

ACOUSTIC QUILT SOUNDPROOFING

Question 33

Allow flexible and efficient space utilization combined with excellent acoustic performance in areas such as offices, hotels, exhibition centers, studios, and many other applications

Answer 33

MOVABLE ACOUSTIC WALL

Question 34

System for walls, floors and ceiling that combats low frequency airborne noise

Answer 34

ACOUSTIC MATTING

Question 35

An acoustic insulation system for wall sockets to eliminate the transfer of sound through walls

Answer 35

FIRE AND ACOUSTIC SOCKET BOX INSERTS