Quiz #1

Question 1

A frequency domain graph

Answer 1

Displays only the distribution of frequencies present

Question 2

A time domain graph

Answer 2

Shows the displacement ( or amplitude) as a wave

Question 3

A sonogram

Answer 3

Shows the combination of amplitude and frequency over time

Question 4

Standard measurement of Reverb

Answer 4

How long does it take sound to decay 60dB

Question 5

First reflections to reach the ear is/are known as

Answer 5

pre delay

Question 6

Proud reflectors generally reflect

Answer 6

high frequencies

Question 7

Reverb decay (measured in sec/ms) is

Answer 7

the time it takes for the energy to be reduced by 60db

Question 8

RT (reverb time)

Answer 8

refers to the time it takes for pressure to be reduced by 60dB

Question 9

Resonances

Answer 9

are to be avoided by having room dimensions that are not the same or multiples of each other

Question 10

Wet & dry

Answer 10

reverberant sound and direct sound

Question 11

Third order reflections

Answer 11

reflections that have been bounced or reflected from three surfaces

Question 12

Convex surfaces….

Answer 12

disperse sound (as opposed to concave surfaces which concentrate sound)

Question 13

Echos are…

Answer 13

discreet, clearly distinguishable reflections

Question 14

Live rooms

Answer 14

reverb time greater than 1 sec

Question 15

Dry rooms

Answer 15

reverb times are less than .5 sec

Question 16

warm room

Answer 16

reverberant below 250 Hz

Question 17

Phase

Answer 17

Shift in time and space

Question 18

Polarity

Answer 18

to a shift in displacement

Question 19

Frequency espresses

Answer 19

How fast (frequently) the molecules of a medium oscillate around their rest position

Question 20

Because it is an inverse relationship

Answer 20

if a wavelength doubles it’s frequency halves

Question 21

An envelope is

Answer 21

ADSR: Attack, decay, sustain, release

Question 22

A waveform can be graphed in…

Answer 22

time domain

Question 23

Spectral content can be graphed

Answer 23

in a frequency domain graph

Question 24

White noise

Answer 24

all frequencies with equal energy per frequency

Question 25

Pink noise

Answer 25

equal energy per octave

Question 26

sawtooth

Answer 26

a fundamental and all of its harmonics

Question 27

square wave

Answer 27

compromised of a fundamental and only it’s odd harmonics

Question 28

sine wave

Answer 28

a single frequency

Question 29

when does destructive interference occur?

Answer 29

2 sources of opposite polarity or two sources perfectly out of phase

Question 30

listening to a language without attention to pronunciation is

Answer 30

semantic listening

Question 31

If you jump out of the was of a police siren this is

Answer 31

causal listening

Question 32

if you critically listen to a tone generated by an oscillator or a musical note (to determine its musical use or value) this is

Answer 32

reduced listening