WEEK 4

Question 1

what are the 3 factors of sound?

Answer 1

FREQUENCY, LOUDNESS AND WAVELENGTHS

Question 2

1. Sound waves enter ear canal and hit eardrum which amplifies the waves
2. Eardrum vibrates from waves and sends new pressure waves to the 3 bones in inner ear

3.Ringing in ears from concert or being in loud environment are due to little hairs being pushed down, sound pressure folds them over

Answer 2

what is the process of listening for sound through a human ear?

Question 3

frequency is measured in _______ per second?

Answer 3

cycles per second

Question 4

we refer to _________ as frequency

Answer 4

pitch

Question 5

how do we study the range of hearing? in what form ?

Answer 5

kiloherts Hz

Question 6

how do we measure loudness?

Answer 6

10dB

Question 7

the difference between 2 sounds is perceived as a factor of?

Answer 7

factor of 2

Question 8

length of a wave in audio transmission

Answer 8

wavelength

Question 9

higher frequency = _________ wave
lower frequency =____________ wave

Answer 9

higher frequency = shorter wave
lower frequency = longer wave

Question 10

what is the main goal of a microphone?

Answer 10

to convert 1 energy to another, they are transducers

Question 11

3 basic mic pick up patterns:

Answer 11

• omnidirectional
• unidirectional
• bidirectional

Question 12

directionality patterns in mics:

-picks up sound at all angles and picks up ambience

Answer 12

omnidirectional

Question 13

directionality patterns in mics:

-has an upside down pick up pattern shaped like a heart

Answer 13

directional cardioid

Question 14

directionality patterns in mics:

more sensitive to sound coming from one direction than another

Answer 14

unidirectional

Question 15

directionality patterns in mics:

equal and max sensitivity at front and back, but zero at sides, good for interviews, guests for talk-shows

Answer 15

bidirectional

Question 16

3 types of microphones:

Answer 16

• dynamic
• condenser
• ribbon

Question 17

karaoke bar, live performance on stage

Answer 17

dynamic mic

Question 18

great for recording vocals, acoustic guitars, not good for documentary or news production, great for a warm vintage feel

Answer 18

ribbon mic

Question 19

good for acustic sound and vocals

Answer 19

condenser

Question 20

• Inexpensive, can use as hammer, unaffected by change in humidity
• Don’t require internal or external power
• Don’t have high frequency response (above 10 Hz), coil requires lots of pressure

Answer 20

dynamic!!!

Question 21

• Extended high and low frequency response, great for picking up wide range of sound
• Expensive, require internal or external power (battery or phantom power)
• Very fast frequency response, picks up everything

Answer 21

condenser!!!

Question 22

V- ERY fast frequency response, picks up everything

• “Warm” and wide frequency response, great for recording vocals, acoustic guitars, not good for documentary or news production

Answer 22

ribbon!!!

Question 23

If mic will be used in severe environment (rock and roll club, outdoor sound) _____________is better, good enough audio.

a) dynamic
b) ribbon
c) condenser

Answer 23

a) dynamic!

Question 24

More controlled environments (concert hall, theater setting), _________is better especially if higher quality sound is wanted

a) dynamic
b) ribbon
c) condenser

Answer 24

c) condenser!

Question 25

⅛ stereo mini (headphone jacks), RCA (red, yellow and white cables attached to TVs)

Answer 25

consumer audio connectors

Question 26

XLR (ones we used in rta 104 for vox pop), ¼ balanced (adapter needed for recording rooms in RTA)

Answer 26

professional audio connectors

Question 27

what are the 2 types of measurement tools?

Answer 27

1. volume unit
2. digital audio equipment meter

Question 28

what happens if you have 2 identical sound waves playing at the same time?

Answer 28

sound doubles to twice as loud