microphones

Question 1

acoustic energy

Answer 1

electric signal

Question 2

dynamic

Answer 2

not affected by climate easily, higher levels of snd, rugged, cheaper, magnetic cable

Question 3

diaphragm

Answer 3

thin, movable membrane that moves with snd

Question 4

Moving coil

Answer 4

diaphragm moves it

Question 5

condenser

Answer 5

natural snd, excellent freq. response, high sensitivity 48v, can be fragile, uses conductive plates

Question 6

ribbon

Answer 6

technically dynamic, both diaphragm and transducer, very fragile, 10x thinner than hair

Question 7

stereo mic

Answer 7

two capsules in one, mono or stereo, good for spatial image

Question 8

digital/USB

Answer 8

has pre-amp, plug in and go, great for quick computer needs

Question 9

shotgun mic

Answer 9

long, directional, interface tube to reject unwanted snds, condenser

Question 10

boundary mic

Answer 10

pressure zone, plate mounted mic, place on surfaces, discrete and for large areas

Question 11

lavalier/body mic

Answer 11

super discrete, wireless and hands free, great for stage/film

Question 12

binaural

Answer 12

mimic human ears, meant for audience to wear headphones, great for spatial snd

Question 13

Guitar Pickups

Answer 13

detects string vibrations and harmonics

Question 14

Polar Patterns

Answer 14

cardioid (unidirectional), figure-eight (bidirectional), omnidirectional

Question 15

Proximity effect

Answer 15

hand cupping impedes pattern, boost low end freq.

Question 16

Noise

Answer 16

small wind snd, all mic have it

Question 17

distortion

Answer 17

signal is too high, gritty, crackly

Question 18

acoustic distortion

Answer 18

rock

Question 19

digital distortion

Answer 19

always bad distortions

Question 20

signal to noise level

Answer 20

distance, higher S/N = greater clarity

Question 21

headroom

Answer 21

distance from signal

Question 22

3:1 rule

Answer 22

space mic at least 3x the distance from mics to source. if not bleed will happen

Question 23

why stereo mic?

Answer 23

accurate localization of snd

Question 24

phantom sourcing

Answer 24

switches what side we think it comes from

Question 25

coincident (techniques)

Answer 25

• x/y
• mid-side (ms)
• blumlein

Question 26

x/y

Answer 26

2 cardioids w/ both diaphragms 120-133 degree angle

Question 27

mid-side (ms)

Answer 27

1 cardioid mic aimed at centre, 1 figure 8 and perpendicular

Question 28

blumlein

Answer 28

2 figure-8, 90 degree

Question 29

figure-8s

Answer 29

mostly ribbon, expensive

Question 30

near coincident - ORTF

Answer 30

2 cardioid 7 in apart with angle 110 degree, NOS

Question 31

NOS

Answer 31

30cm apart, 90 degree

Question 32

spaced pair a-b

Answer 32

2 similar mics aimed straight

Question 33

baffled pair

Answer 33

2 omni (not really) spaced car-width apart