Final Cut X Ripple 2 SOUND

Question 1

When a guitar string is plucked, or someone calls your name, ___ _________ are pushed together….

Answer 1

air molecules

Question 2

When a guitar string is plucked, or someone calls your name, air molecules are pushed together, raising ___ ________

Answer 2

air pressure

Question 3

These molecules under pressure ____ other nearby air molecules

Answer 3

push

Question 4

As these high-pressure waves move through the air, low pressure areas follow, creating a series of _____ and _______

Answer 4

peaks and troughs

Question 5

When these pressure waves reach our ears, they vibrate receptors, and we hear the vibrations as _____

Answer 5

sound

Question 6

Looking at this simple waveform, the zero line represents the air pressure at ____.

Answer 6

rest

Question 7

When the the wave rises above the line, this is higher ________

Answer 7

pressure

Question 8

….and when the wave drops

below the line it represents lower ________

Answer 8

pressure.

Question 9

_________ is the term used to describe the change in pressure from the highest peak to the trough

Answer 9

Amplitude

Question 10

High amplitude waves are ____, low amplitude waves are ____.

Answer 10

loud, soft

Question 11

_____ is used to describe a single repeated sequence of pressure change, from zero pressure to high pressure to low pressure and back to zero again.

Answer 11

Cycle

Question 12

_________ is used to describe the number of cycles per second and is measured in hertz.

Answer 12

Frequency

Question 13

A 1000 Hz waveform for example, emits 1000 ______ per second.

Answer 13

cycles

Question 14

The higher the _________, the higher the pitch.

Answer 14

frequency

Question 15

When two or more sound waves meet, they ___ __ ________ from one another.

Answer 15

add or subtract

Question 16

If their peaks and troughs are perfectly in phase, each waveform is combined to produce a higher _________ waveform

Answer 16

amplitude

Question 17

If their peaks and troughs mirror each other, the sound wave is said to be out of phase, they cancel each other out, resulting in no _________ and therefore, no sound.

Answer 17

amplitude

Question 18

Generally, sound waves are out of phase in varying amounts, resulting in a combined ________ that is more complex than individual waveforms. When different sounds are combined like music, voice, background noise and so on, you get a more complex waveform.

Answer 18

waveform

Question 19

In the analog world, sound is recorded as positive and negative _______ changes.

Answer 19

voltage

Question 20

For example, speaking into a microphone, high pressure _____ become positive _______, and low pressure _____ become negative _______.

Answer 20

waves, voltage

Question 21

These voltage changes are stored on tape as changes in ________ _______..

Answer 21

magnetic strength

Question 22

When the tape is played back, the reverse happens: positive/negative _______ gets converted back into _____ ________, and vibrates the speaker cone to produce the sound.

Answer 22

voltage, sound pressure,

Question 23

Unlike analog storage media like tape, computers store audio digitally, converting the sound waves into a series of _____ and ____

Answer 23

zeros and ones

Question 24

In digital storage, the waveform is broken down into individual snapshots called _______

Answer 24

samples

Question 25

The sampling process is often referred to as __________, or _ to _ __________.

Answer 25

DIGITIZING, A TO D CONVERSION.

Question 26

The ______ ____ determines the number of digital snapshots of the waveform.

Answer 26

sample rate

Question 27

The higher the sample rate, the more the digitized audio will faithfully reproduce the original analog ________.

Answer 27

waveform

Question 28

Low sample rates, on the other hand, limit the number of ____________ that can be recorded, and results in poor quality audio.

Answer 28

frequencies

Question 29

To reproduce a given frequency, the sample rate must be at least twice that _________.

Answer 29

frequency

Question 30

For example, songs that you download from iTunes have a sample rate of 44,100 _______ per second, so they can reproduce ____________ of up to 22,050 Hz, which is just beyond the limits of human hearing.

Answer 30

samples, frequencies

Question 31

When you record audio to your camera, or to a separate digital recorder, the A TO D CONVERSION happens in the ______.

Answer 31

device

Question 32

When you record audio into your computer from a connected mic, the A TO D CONVERSION happens in the ________.

Answer 32

computer

Question 33

___ _____ determines DYNAMIC RANGE.

Answer 33

BIT DEPTH

Question 34

BIT DEPTH determines _______ _____.

Answer 34

DYNAMIC RANGE

Question 35

DYNAMIC RANGE can be described as the difference between the _______ and _______ sounds in a WAVEFORM.

Answer 35

SOFTEST, LOUDEST

Question 36

When a SOUND WAVE is SAMPLED, each sample is assigned an __________ _____ closest to the original sound wave’s amplitude.

Answer 36

AMPLITUDE VALUE

Question 37

When a _____ ____ is SAMPLED, each sample is assigned an AMPLITUDE VALUE closest to the original sound wave’s amplitude.

Answer 37

SOUND WAVE

Question 38

When a SOUND WAVE is _______, each sample is assigned an AMPLITUDE VALUE closest to the original sound wave’s amplitude.

Answer 38

SAMPLED

Question 39

A 16-bit audio file, for example, will produce roughly _____ amplitudes

Answer 39

65,000

Question 40

Whereas an 8-bit audio file will produce only ___ amplitudes.

Answer 40

256

Question 41

The higher the ___ ____, the more faithful the sound it to the sampled sound.

Answer 41

bit rate

Question 42

For most video production work, __-___ audio is more than adequate to maintain sound fidelity.

Answer 42

16-bit

Question 43

.AIFF, which stands for _____ ___________ ____ ______, is a MAC OS file format designed for storing uncompressed audio data.

Answer 43

AUDIO INTERCHANGE FILE FORMAT

Question 44

The windows equivalent to the .AIFF file type is a .___ file

Answer 44

.WAV

Question 45

Other audio formats, like .___, .___, .___, are highly compressed formats, and are generally used for delivery, and not for production.

Answer 45

aac, .mp3, and .mp4

Question 46

1 Hz = 1 ?

Answer 46

Cycle