Architectural Acoustics: Introduction

Question 1

art and technique of designing spaces, structures and mechanical systems to meet hearing needs

Answer 1

architectural acoustics

Question 2

The architect must deal primarily with the external
human senses of: _, _, _

Answer 2

senses of sight, touch and hearing

Question 3

The goal of architectural acoustics is to make the
environment best serve the functions intended, such as (3)

Answer 3

work, relaxation and sleep

Question 4

4 Essential Elements of Architectural Acoustics

Answer 4

room acoustics, sound reinforcement system, sound isolation, mechanical system noise control

Question 5

6 compatibility w/ room acoustics shapes

Answer 5

rectangle, cruciform, diamond, square, fan, octagon

Question 6

is the act of blocking noise through the use of physical barriers.

Answer 6

noise isolation

Question 7

it’s a process for blocking off ambient sound through a system of components

Answer 7

noise cancellation

Question 8

is an oscillation in
presence of the atmosphere
which is capable of being
detected by the human ear

Answer 8

sound

Question 9

It is a form of energy propagated in waves that continues to subsist until filtered through a material turning into heat by friction.

Answer 9

sound

Question 10

is the sensation produced
through the ear resulting from fluctuations in the pressure of the air.

Answer 10

sound

Question 11

elements of the nature of sound (3)

Answer 11

source of sound, medium or transmission path, and receiver

Question 12

is
normally a vibrating body,
which converts some
other form of energy into
vibration. The source can
be made quitter.

Answer 12

source of sound

Question 13

often used as a generic
term for devices used in
converting some form of
energy into sound such
as loudspeakers and
microphones.

Answer 13

transducer

Question 14

is any
substance that allows the
vibration to be transmitted
in the form of a wave
motion. The transmission
can be made to transmit
more or less sound.

Answer 14

transmission path

Question 15

Sounds that are
transmitted by air are
called

Answer 15

airborne sounds

Question 16

Sounds that are
transmitted through solid
bodies are called

Answer 16

structureborne sounds

Question 17

pertains with
the human ear; and can be influenced

Answer 17

receiver

Question 18

3 types of sound

Answer 18

music, speech, noise

Question 19

are classified as ordered sound

Answer 19

music & speech

Question 20

classified as disordered sound

Answer 20

noise

Question 21

sound waves can be

Answer 21

pure tone or complex sound

Question 22

is sound
dominated by energy in a
single frequency

Answer 22

pure tone

Question 23

pure tone is
described by a single
smooth

Answer 23

sine curve

Question 24

can only be
produced electronically

Answer 24

pure tone

Question 25

are those of speech, music and noise

Answer 25

complex sound

Question 26

Sounds with wavelengths ranging from ___to ___can be heard by humans.

Answer 26

12mm-15000mm

Question 27

the full circuit by the particle.

Answer 27

cycle

Question 28

the number of complete cycles per second, measured in hertz (Hz).

Answer 28

frequency

Question 29

the maximum displacement of a particle.

Answer 29

amplitude

Question 30

the time required for one complete vibration, measured in seconds per cycle.

Answer 30

period

Question 31

the distance a sound wave travels during one cycle of vibration.

Answer 31

wavelength

Question 32

6 properties of sound

Answer 32

1.Speed or Velocity 2. Frequency (Pitch or Tone) 3. Power (Intensity or Loudness) 4. Threshold of Audibility 5. Threshold of pain 6. Directionality of Sound Sources

Question 33

is the speed of sound that varies greatly according to the medium the waves travel in and slightly according to the temperature of the medium.

Answer 33

velocity

Question 34

Sound travels in the air at ___meters per second at normal temperature (___degrees Centigrade)

Answer 34

330, 20

Question 35

In sound, ___is often referred to by a term borrowed from musical concepts – Pitch.

Answer 35

frequency,

Question 36

The sound’s frequency is its number of vibration in cycles per second, also known as ___

Answer 36

hertz (hz)

Question 37

The approximate frequency range of a healthy person’s is __to ___Hz.

Answer 37

20-20000hz

Question 38

Humans are most sensitive to sounds having significant energy in the ___to ___Hz.

Answer 38

500-4000 hz

Question 39

Low frequency sounds of about 16 to 500 Hz are called ___

Answer 39

rumble

Question 40

while high frequency sounds of 1,000 to 8,000 Hz are referred to as ___

Answer 40

hissy

Question 41

fomula for wavelength

Answer 41

w= v/f

Question 42

also known as sound intensity, is its loudness or impact of its pulsating waves against eardrums

Answer 42

sound power level

Question 43

sound power level is measured in?

Answer 43

decibels (db)