Quiz 3

Question 1

Pick the proper key combination to “Group” highlighted tracks in Protools.

Answer 1

⌘Command and G

Question 2

If the speed of sound is roughly 1,130 feet per second, the frequency of a 22 foot wavelength is how many Hertz?

Answer 2

51.36

Question 3

The image shows a waveform (Red) which is being misrepresented by the digital conversion (Blue). The way to solve this is:

Answer 3

Increase the Sample Rate

Question 4

Pick the proper key combination to “Undo” in Protools.

Answer 4

⌘Command and Z

Question 5

Amplitude Quantization refers to:

Answer 5

An error in the amplitude value, due to the resolution of the bit depth.

Question 6

If the speed of sound is roughly 1,130 feet per second, the wavelength for a frequency of 4,814 Hz is how many feet?

Answer 6

0.23

Question 7

An audio CD, in order to conform to the red book standard must have a sample rate of ______ hertz and a bit depth of ______ bits

Answer 7

44100Hz

16-bit

Question 8

The part of a sound wave with pressure higher than the barometric mean (normal air pressure) is said to be in a state of ______

Answer 8

Compression

Question 9

The part of a sound wave with pressure lower than the barometric mean (normal air pressure) is said to be in a state of ______

Answer 9

Rarefaction

Question 10

What type of connector uses the AES/EBU digital transfer format?

Answer 10

XLR

Question 11

What type of connector uses the ADAT digital transfer format?

Answer 11

Toslink

Question 12

What type of connector uses the S/PDIF (E) digital transfer format?

Answer 12

RCA

Question 13

What type of connector uses the S/PDIF (O) digital transfer format?

Answer 13

Toslink

Question 14

The Nyquist Theorem states that the ___ ___ must be at least twice as ___ as the highest recorded ___, in order to avoid ___ frequencies.

Answer 14

sample, rate, high, frequency, alias

Question 15

Wavelength is calculated using which formula?

Answer 15

Speed of Sound / Frequency

Question 16

Pick the proper key combination to “Consolidate” in Protools.

Answer 16

⌥Option(alt) and Shift and 3

Question 17

Pick the proper key combination to “Cut” out a selected area in Protools.

Answer 17

⌘Command and X

Question 18

The average range of human hearing is:

Answer 18

20Hz - 20kHz

Question 19

In this image of a sine wave, which point along the zero line coincides with 90º?

Answer 19

B

Question 20

A sample is

Answer 20

An instantaneous record of the amplitude of an analog signal, the value of which is stored as a binary number.

Question 21

What are the three types of stereo digital transfer formats?

Answer 21

AES/EBU
S/PDIF (E)
S/PDIF (O)

Question 22

When noise is introduced to average out quantization errors, it’s known as ______

Answer 22

Dither

Question 23

Frequency is measured in ______

Answer 23

Hertz

Question 24

Which of the following is not a stereo digital transfer format?

AES/EBU
S/PDIF (E)
S/PDIF (O)
ADAT

Answer 24

ADAT

Question 25

When looking at a waveform the amount of deviation above or below the zero line represents ______

Answer 25

Amplitude

Question 26

According to the Nyquist Theorem, the minimum sample rate for a converter which has a filter starting at 20kHz and ending at 22.05kHz is 40,000 a second (T/F)?

Answer 26

False.

Question 27

The wavelength of 2260 Hz is:

Answer 27

6 inches (0.5 feet)

Question 28

This is a picture of the Pro Tools ______ window.

Pre-roll 0| 0| 000| Start 30| 4| 000
Post-roll 0| 0| 000| End 31| 4| 959
transport = Pro Tools Length 1| 0| 959

◔⏮ ⏪ ⏩ ⏭ ▇ ▶⬤

Answer 28

Transport

Question 29

Bit depth refers to:

Answer 29

The word length of a binary number