Digital Audio (Quiz #1)

Digital Music Processing

The Music Telegraph | Text 2018/11/21 [12:19]

Digital Audio (Quiz #1)

Digital Music Processing

The Music Telegraph| 입력 : 2018/11/21 [12:19]

 

1. In a Time Domain graph, what does the x-axis (left to right) represent?

 

 

2. Write the domain below each picture:  

▲ © The Music Telegraph

 

▲ © The Music Telegraph




 

3. Analog sound is __________ whereas Digital sound is discrete

 

 

4. True or False: Any two points in an analog waveform may contain an infinite amount of resolution

 

 

5. The breaking up of an analog waveform into steps is referred to as:

a) dithering

b) oversampling

c) zero crossing

d) quantization

e) optimization

 

 

6. When making edits in the digital domain, how can we eliminate clicks from the beginning of files?

 

 

7. Decimal numbers are Base 10 numbers, whereas Binary numbers are:

 

 

8. Why is it more efficient for a computer to use binary numbers than decimal numbers?

 

 

9. Convert the following number to Decimal: 1101

 

 

10. Convert the following number to Binary (1 byte): 174

 

 

11. True or False: One reason why Hexadecimal numbers are useful is that a whole byte can be expressed with only (2) digits

 

 

12. Gigabyte is the same as _____ megabytes

 

 

13. Terabyte is the same as _____ gigabytes

 

 

14. True or False: 1 MB = 1 Mb

 

 

15. Give the file size in MB

1 minute / stereo / 44.1 Khz / 24 bit: __________

3 minute / mono / 96 Khz / 24 bit: __________

2 minute / stereo / 44.1 Khz / 32 bit: __________

 

 

16. About how much faster is the transfer rate (in MB / sec) of a high end SATA drive than a high end (P)ATA drive?

a) It is not -(P)ATA is faster

b) About 100 MB / sec

c) About 17 MB / sec

d) About 500 Mb /sec

 

 

17. What would you need to set up a External Firewire disk using a (P)ATA drive?

 

 

18. The transfer rate of Firewire 400 is __________. It is faster or slower than USB 2.0?

 

 

19. Name one advantage and one disadvantage of RAID 0:

Advantage: 

Disadvantage:

 

 

20. How many audio channels can pass through an ADAT (or Lightpipe) digital transfer? 

 

 

<Pro Tools Key Commands>

21. New Group:

22. Open “New Track Dialog”:

23. Loop Playback:

24. Horizontal Zoom:

25. Create Memory Location (Marker):

 

 

 

_________________________ 

 

 

 

 

<Answer>

 

1. Time

2. Frequency domain, Phase domain (Time domain, Phase is basically equal to time, but it contains more relativity), Time domain

3. Continuous

4. True

5. d - Quantization

6. Decrease volume (because clicks mean distortion, such in analog, in digital format), Zero crossing

7. Base 2

8. Binary provide (or support) ‘bit’ function in a computer, Using binary numbers is much faster than calculating decimal numbers in computers

9. (1 x 2^3) + (1 x 2^2) + (0 x 2^1) + (1 x 2^0) = 8 + 4 + 0 + 1 = 13

10. 10101110

11. True

12. 1024

13. 1024

14. False

15. 15.14 MB, 49.44 MB, 40.37 MB

16. C

17. Enclosure

18. 400 Mb/sec (=400Mb/8 = 50 MB/sec), Slower

19. Two drives combines for 2 x performance (fast), There is no back up function

20. 8 ch

21. ⌘ + G

22. ⌘ + Shift + N

23. ⌘ + Shift + L

24. ⌘ + ]/[

25. Enter

 

 

 

 

 

 

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