PDX_26_Acoustics Vocabulary

Question 0

Any unwanted sound

Answer 0

Noise

Question 1

Energy produced by vibrating medium transmitted as a wave through an elastic medium

Answer 1

Sound

Question 2

Generated by a vibrating object and radiated outward from the source equally in all directions

Answer 2

Soundwaves

Question 3

Measure frequency, has been replaced by hertz (HZ)

Answer 3

Cycles per second

Question 4

Number of cycles of compression and expansion completed per second, and measured in hertz (HZ)

Answer 4

Frequency

Question 5

Sounds depends on the medium it travels through and the temperature of that medium

Answer 5

Velocity

Question 6

Increased intensity of sound by mechanical or electrical means

Answer 6

Amplification

Question 7

Intensity of sound of the given location, and watts per square meter

Answer 7

Intensity level

Question 8

The overall quality of the sound with reference to its quality, pitch, strength, source

Answer 8

Tone

Question 9

The order of sounds on the frequency related scale

Answer 9

Pitch

Question 10

measure of sonic energy per time, measured in watts

Answer 10

Sound power

Question 11

The local pressure deviation from the ambient atmospheric pressure caused by a soundwave

Answer 11

Sound pressure

Question 12

Sounds power per-unit area

Answer 12

Sound intensity

Question 13

Unit of sound intensity devised to describe sound magnitude

Answer 13

Decibel (DB)

Question 14

Unit of sound intensity measurement that is waited to account for the response of the human ear to various frequencies

Answer 14

dBA

Question 15

The change in decibel levels

Answer 15

Loudness

Question 16

A measure of speech intelligibility calculated from the number of words read from a selective list better understood by an audience

Low: 0.6, good for communication.

Answer 16

Articulation index

Question 17

The reduction of sound

Answer 17

Attenuation

Question 18

A scaler representation of the amount of sound energy absorbed upon striking a particular surface. It’s an arithmetic average of the sound of absorption capacity of a product at only four frequencies: turn 50, 500, 1000 and 2000 Hz, which represents the center range of human speech.

Answer 18

Noise reduction coefficient (NRC)

Question 19

I was that occurs when an object comes into direct contact with the barrier, typically either the floor or ceiling assembly

Answer 19

Impact noise

Question 20

Single number of the measures of floor/ceiling assembly’s resistance to the transmission of structure born or impacts noise.

Answer 20

Impact isolation class (IIC)

Question 21

Where sound passes around, over-the-top, or under the partition separating two spaces.

Answer 21

Flanking transmission

Question 22

Is a measure of the amount of sound generated by a source independent of its environment

Answer 22

Sound power level (PWL)

Question 23

Sound pressure at a location expressed in newtons per square meter

Answer 23

Sound pressure level (SPL)

Question 24

Single number system for specifying a maximum SPL level in a given location using standardized reference contours. Curves weight the frequencies to which the human ear is sensitive.

Answer 24

NC curves