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UTILITIES 3 > 02. SOUNDS > Flashcards

02. SOUNDS Flashcards

1
Q

The two types of sound

A
  1. WANTED
  2. UNWANTED
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2
Q

Sound must always have the following

A
  1. SOURCE
  2. PATH
  3. RECEIVER
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3
Q

Sound travels faster in denser media

A

SPEED

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4
Q

The unit which sound intensity is defined for architectural purposes

A

DECIBEL

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5
Q

Instrument by which sound intensity is measured

A

DECIBEL-METER

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6
Q

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

A

SOUND PRESSURE

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7
Q

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

A

WAVELENGTH

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8
Q

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

A

LOUDNESS

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9
Q

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

A

THRESHOLD OF AUDIBILITY

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10
Q

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

A

THRESHOLD OF PAIN

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11
Q

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

A

FREQUENCY

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12
Q

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

A

HERTZ (Hz)

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13
Q

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

A

PITCH

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14
Q

Sound sensation having pitch

A

TONE

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15
Q

The four natural elements that affect sound

A
  1. TEMPERATURE
  2. CLOUDS
  3. WIND
  4. BODIES OF WATER
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16
Q

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

A

SOUND REFLECTION

17
Q

Sound Reflection - uniform reflection

A

FLAT SURFACE

18
Q

Sound Reflection - sound dispersion

A

CONVEX SURFACE

19
Q

Sound Reflection - sound concentration

A

CONCAVE SURFACE

20
Q

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

A

SOUND ABSORPTION

21
Q

Occurs when sound waves are dispersed equally in a room

A

SOUND DIFFUSION

22
Q

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

A

SOUND DIFFRACTION

23
Q

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

A

SOUND REFRACTION

24
Q

Sound which penetrates through surface

A

SOUND TRANSMISSION

25
Q

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

A

AMBIENT OR BACKGROUND NOISE LEVEL

26
Q

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

A

NOISE REDUCTION (NR)

27
Q

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

A

ACOUSTIC DECK 19

28
Q

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

A

ACOUSTIC DECK 19 TIMBER FLOORS

29
Q

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

A

ACOUSTIC SOUNDBOARD SUPREME 24

30
Q

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

A

SILENT BOARD

31
Q

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

A

ACOUSTIC ISOLATION STRIP

32
Q

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

A

ACOUSTIC QUILT SOUNDPROOFING

33
Q

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

A

MOVABLE ACOUSTIC WALL

34
Q

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

A

ACOUSTIC MATTING

35
Q

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

A

FIRE AND ACOUSTIC SOCKET BOX INSERTS

UTILITIES 3 (4 decks)

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